Integrated Taxonomic Information System - Taxon Author Search Results


Source: Comisión Nacional para el Conocimiento y Uso de la Biodiversidad, database (version undefined)

ITIS records citing this source
 
 Kingdom Animalia
  Abeillia abeillei (R. Lesson & Delattre, 1839) -- valid -- Colibrí pico corto, Emerald-chinned Hummingbird
  Abronia bogerti Tihen, 1954 -- valid -- Lagarto alicante de Bogert, Bogert's Arboreal Alligator Lizard
  Abronia chiszari Smith and Smith, 1981 -- valid -- Chiszar's Arboreal Alligator Lizard, Lagarto alicante de Chiszar
  Abronia fuscolabialis (Tihen, 1944) -- valid -- Escorpión Arboricola del Zempoaltepec, Mount Zempoaltepec Arboreal Alligator Lizard, Lagarto alicante de Zempoaltepec
  Abronia graminea (Cope, 1864) -- valid -- Lagarto alicante terrestre, Sierra de Tehuacan Arboreal Alligator Lizard, Terrestrial Arboreal Alligator Lizard
  Abronia kalaina Good and Schwenk, 1985 -- invalid -- Lagarto alicante de Sierra de Juárez
  Abronia lythrochila Smith and Alvarez del Toro, 1963 -- valid -- Lagarto alicante labios rojos, Red-lipped Arboreal Alligator Lizard
  Abronia matudai (Hartweg and Tihen, 1946) -- valid -- Lagarto alicante rayado, Matuda's Arboreal Alligator Lizard
  Abronia mitchelli Campbell, 1982 -- valid -- Lagarto alicante de Mitchell, Mitchell's Arboreal Alligator Lizard
  Abronia mixteca Bogert and Porter, 1967 -- valid -- Lagarto alicante mixteco, Mixtecan Arboreal Alligator Lizard
  Abronia oaxacae (Günther, 1885) -- valid -- Lagarto alicante oaxaqueño, Oaxacan Arboreal Alligator Lizard
  Abronia ochoterenai (Martín del Campo, 1939) -- valid -- Lagarto alicante verde, Ochoterena's Arboreal Alligator Lizard, Northern Chiapas Arboreal Alligator Lizard
  Abronia ornelasi Campbell, 1984 -- valid -- Lagarto alicante de Cerro Baúl, Ornelas's Arboreal Alligator Lizard, Cerro Baul Alligator Lizard
  Abronia reidi Werler and Shannon, 1961 -- valid -- Lagarto alicante de Reid, Reid's Arboreal Alligator Lizard
  Abronia taeniata (Wiegmann, 1828) -- valid -- Lagarto alicante de bromelia, Banded Arboreal Alligator Lizard, Bromeliad Arboreal Alligator Lizard
  Accipiter bicolor (Vieillot, 1817) -- valid -- Gavilán bicolor, Bicolored Hawk, Épervier bicolore
  Accipiter chionogaster (Kaup, 1852) -- valid -- Gavilán pecho blanco, White-breasted Hawk
  Accipiter cooperii (Bonaparte, 1828) -- valid -- Gavilán de Cooper, Cooper's Hawk, epervier de Cooper, Épervier de Cooper
  Accipiter gentilis (Linnaeus, 1758) -- valid -- Gavilán azor, Northern Goshawk, Autour des palombes
  Accipiter striatus Vieillot, 1808 -- valid -- Gavilán pecho rufo, Sharp-shinned Hawk, epervier brun, Épervier brun
  Acris crepitans Baird, 1854 -- valid -- Northern Cricket Frog, Rana-grillo norteño, Eastern Cricket Frog
  Actitis macularia (Linnaeus, 1766) -- invalid -- Playero alzacolita, Spotted Sandpiper, chevalier grivelé
  Adelophis copei Dugès, 1879 -- valid -- Culebra-de vega de Cope, Cope's Mountain Meadow Snake
  Adelophis foxi Rossman and Blaney, 1968 -- valid -- Culebra-de vega de Fox, Fox's Mountain Meadow Snake
  Adelphicos latifasciatus Lynch and H. M. Smith, 1966 -- invalid -- Culebra-cavadora oaxaqueña
  Adelphicos nigrilatus H. M. Smith, 1942 -- invalid -- Culebra-cavadora ocotera
  Adelphicos quadrivirgatus Jan, 1862 -- invalid -- Culebra-cavadora centroamericana
  Aechmophorus clarkii (Lawrence, 1858) -- valid -- Achichilique pico naranja, Clark's Grebe, Grèbe à face blanche
  Aechmophorus occidentalis (Lawrence, 1858) -- valid -- Achichilique pico amarillo, Grèbe élégant, Western Grebe
  Aegolius acadicus (J. F. Gmelin, 1788) -- valid -- Tecolote afilador, Northern Saw-whet Owl, petite nyctale
  Aeronautes saxatalis (Woodhouse, 1853) -- valid -- White-throated Swift, Vencejo pecho blanco
  Aethia cristatella (Pallas, 1769) -- valid -- Crested Auklet, Alcuela crestada, Starique cristatelle, Mérgulo empenachado, torda-de-penacho
  Agalychnis callidryas (Cope, 1862) -- valid -- Rana-de árbol ojos rojos, Red-eyed Treefrog
  Agamia agami (Gmelin, 1789) -- valid -- Garza agami, Agami Heron, Héron agami
  Agelaius phoeniceus (Linnaeus, 1766) -- valid -- Red-winged Blackbird, carouge à épaulettes, Tordo sargento
  Agelaius tricolor (Audubon, 1837) -- valid -- Tricolored Blackbird, Tordo tricolor
  Agkistrodon contortrix (Linnaeus, 1766) -- valid -- Copperhead, Cantil cobrizo, Eastern Copperhead
  Agouti paca (Linnaeus, 1766) -- invalid -- Tepezcuintle
  Agriocharis ocellata (Cuvier, 1820) -- invalid -- Guajolote ocelado
  Aimophila botterii (P. L. Sclater, 1858) -- invalid -- Botteri's Sparrow, Zacatonero de Botteri
  Aimophila carpalis (Coues, 1873) -- invalid -- Rufous-winged Sparrow, Zacatonero ala rufa
  Aimophila cassinii (Woodhouse, 1852) -- invalid -- Cassin's Sparrow, Zacatonero de Cassin
  Aimophila humeralis (Cabanis, 1851) -- invalid -- Zacatonero pecho negro, Black-chested Sparrow
  Aimophila mystacalis (Hartlaub, 1852) -- invalid -- Zacatonero embridado, Bridled Sparrow
  Aimophila notosticta (P. L. Sclater & Salvin, 1868) -- valid -- Zacatonero oaxaqueño, Oaxaca Sparrow, Tohi d'Oaxaca, Chingolo oaxaqueño
  Aimophila rufescens (Swainson, 1827) -- valid -- Zacatonero rojizo, Rusty Sparrow, Tohi roussâtre, Chingolo rojizo
  Aimophila ruficauda (Bonaparte, 1853) -- invalid -- Zacatonero corona rayada, Stripe-headed Sparrow
  Aimophila ruficeps (Cassin, 1852) -- valid -- Tohi à calotte fauve, Chingolo coronirrufo, Rufous-crowned Sparrow, Zacatonero corona rufa
  Aimophila sumichrasti (Lawrence, 1871) -- invalid -- Zacatonero istmeño, Cinnamon-tailed Sparrow
  Aix sponsa (Linnaeus, 1758) -- valid -- Pato arcoiris, Wood Duck, Canard branchu, Pato joyuyo, pato-carolino
  Ajaia ajaja (Linnaeus, 1758) -- invalid -- Roseate Spoonbill, Espátula rosada
  Alectoris chukar (J. E. Gray, 1830) -- valid -- Perdrix choukar, Perdiz chúcar, perdiz-chucar, Chukar, Perdiz chukar, Chukar Partridge
  Alligator mississippiensis (Daudin, 1802) -- valid -- American Alligator, Aligator americano, Alligator, Gator, Florida Alligator, Mississippi Alligator, Louisiana Alligator
  Alouatta palliata (Gray, 1849) -- valid -- Saraguato de manto, Mantled Howler
  Alouatta pigra Lawrence, 1933 -- valid -- Mexican Black Howler Monkey, Saraguato yucateco, Central American Black Howler, Guatemalan Black Howler
  Amastridium veliferum Cope, 1861 -- valid -- Culebra cabeza cobriza, Rustyhead Snake
  Amaurolimnas concolor (Gosse, 1847) -- valid -- Rascón café, Uniform Crake
  Amazilia beryllina (Deppe, 1830) -- invalid -- Berylline Hummingbird, Colibrí berilo
  Amazilia candida (Bourcier & Mulsant, 1846) -- invalid -- Colibrí cándido, White-bellied Emerald
  Amazilia cyanocephala (R. Lesson, 1830) -- invalid -- Colibrí corona azul, Azure-crowned Hummingbird
  Amazilia cyanura Gould, 1859 -- invalid -- Colibrí cola azul, Blue-tailed Hummingbird
  Amazilia rutila (Delattre, 1843) -- valid -- Colibrí canela, Cinnamon Hummingbird
  Amazilia tzacatl (de la Llave, 1833) -- valid -- Rufous-tailed Hummingbird, Colibrí cola rojiza
  Amazilia violiceps (Gould, 1859) -- invalid -- Violet-crowned Hummingbird, Colibrí corona violeta
  Amazilia viridifrons (D. G. Elliot, 1871) -- invalid -- Colibrí frente verde, Green-fronted Hummingbird
  Amazilia yucatanensis (S. Cabot, 1845) -- valid -- Buff-bellied Hummingbird, Colibrí yucateco
  Amazona albifrons (Sparrman, 1788) -- valid -- White-fronted Parrot, White-fronted Amazon, Loro frente blanca, Amazone à front blanc, Amazona frentialba, papagaio-de-testa-branca
  Amazona auropalliata (R. Lesson, 1842) -- valid -- Yellow-naped Amazon, Yellow-naped Parrot, Loro nuca amarilla, Amazone à nuque d'or, Amazona nuquigualda, papagaio-de-nuca-amarela
  Amazona autumnalis (Linnaeus, 1758) -- valid -- Red-lored Amazon, Red-lored Parrot, Loro cachete amarillo, Amazone à lores rouges, Amazona frentirroja, papagaio-diadema, papagaio-cavacué
  Amazona farinosa (Boddaert, 1783) -- valid -- Mealy Amazon, Mealy Parrot, Loro corona azul, Amazone poudrée, Amazona harinosa sureña, papagaio-moleiro, Southern Mealy Amazon
  Amazona finschi (P. L. Sclater, 1864) -- valid -- Lilac-crowned Amazon, Lilac-crowned Parrot, Loro corona lila, Amazone à couronne lilas, Amazona guayabera, papagaio-de-finsch
  Amazona oratrix Ridgway, 1887 -- valid -- Yellow-headed Parrot, Yellow-headed Amazon, Loro cabeza amarilla, Amazone à tête jaune, Amazona cabecigualda, papagaio-de-cabeça-amarela
  Amazona viridigenalis (Cassin, 1853) -- valid -- Red-crowned Amazon, Red-crowned Parrot, Loro tamaulipeco, Amazone à joues vertes, Amazona tamaulipeca, papagaio-de-coroa-vermelha, papagaio-de-face-verde
  Amazona xantholora (G. R. Gray, 1859) -- valid -- Yucatan Amazon, Yellow-lored Parrot, Loro yucateco, Yellow-lored Amazon, Amazone du Yucatan, Amazona yucateca, papagaio-de-iucatã
  Amblycercus holosericeus (Deppe, 1830) -- valid -- Cacique pico claro, Yellow-billed Cacique
  Ambystoma amblycephalum Taylor, 1940 -- valid -- Salamandra cabeza chata
  Ambystoma andersoni Krebs and Brandon, 1984 -- valid -- Salamandra de Anderson
  Ambystoma bombypellum Taylor, 1940 -- valid -- Salamandra piel fina
  Ambystoma flavipiperatum Dixon, 1963 -- valid -- Salamandra de Chapala
  Ambystoma granulosum Taylor, 1944 -- valid -- Salamandra granulada
  Ambystoma mexicanum (Shaw and Nodder, 1798) -- valid -- Axolotl, Salamandra ajolote
  Ambystoma ordinarium Taylor, 1940 -- valid -- Salamandra michoacana
  Ambystoma rosaceum Taylor, 1941 -- valid -- Salamandra tarahumara
  Ambystoma taylori Brandon, Maruska and Rumph, 1982 -- valid -- Salamandra de Taylor
  Ambystoma tigrinum (Green, 1825) -- valid -- Tiger Salamander, Salamandra tigre, Eastern Tiger Salamander
  Ambystoma velasci Dugès, 1888 -- valid -- Salamandra tigre de meseta
  Ameiva chaitzami Stuart, 1942 -- invalid -- Ameiva de Chaitzam
  Ameiva festiva (Lichtenstein and Martens in Lichtenstein, 1856) -- invalid -- Ameiva centroamericana
  Ameiva undulata (Wiegmann, 1834) -- invalid -- Ameiva metálica o arcoiris
  Ammodramus bairdii (Audubon, 1844) -- invalid -- Baird's Sparrow, Gorrión de Baird
  Ammodramus caudacutus (J. F. Gmelin, 1788) -- invalid -- Saltmarsh Sharp-tailed Sparrow, Gorrión cola aguda, Saltmarsh Sparrow
  Ammodramus leconteii (Audubon, 1844) -- invalid -- Bruant de LeConte, Gorrión de Le Conte, Le Conte's Sparrow
  Ammodramus maritimus (A. Wilson, 1811) -- invalid -- Seaside Sparrow, Gorrión costero
  Ammodramus savannarum (J. F. Gmelin, 1789) -- valid -- Chingolo saltamontes, escrevedeira-dos-gafanhotos, Grasshopper Sparrow, bruant sauterelle, Gorrión chapulín
  Ammospermophilus harrisii (Audubon and Bachman, 1854) -- valid -- Harris' antelope squirrel, Ardilla-antilope de Sonora, Harris's Antelope Squirrel
  Ammospermophilus interpres (Merriam, 1890) -- valid -- Ardilla-antilope texana, Texas Antelope Squirrel
  Ammospermophilus leucurus (Merriam, 1889) -- valid -- Ardilla-antílope cola blanca, White-tailed Antelope Squirrel
  Amphispiza belli (Cassin, 1850) -- invalid -- Sage Sparrow, Zacatonero de artemisa
  Amphispiza bilineata (Cassin, 1850) -- valid -- Bruant à gorge noire, Chingolo gorjinegro, escrevedeira-de-garganta-preta, Zacatonero garganta negra, Black-throated Sparrow
  Amphispiza quinquestriata (P. L. Sclater & Salvin, 1868) -- invalid -- Bruant pentaligne, Chingolo cincorrayas, Five-striped Sparrow, Zacatonero cinco rayas
  Anabacerthia variegaticeps (P. L. Sclater, 1857) -- valid -- Scaly-throated Foliage-gleaner, Breñero cejudo
  Anas acuta Linnaeus, 1758 -- valid -- Pato golondrino, Northern Pintail, Canard pilet, Ánade rabudo norteño, arrabio
  Anas americana J. F. Gmelin, 1789 -- invalid -- Pato chalcuán, American Wigeon, canard d'Amérique
  Anas clypeata Linnaeus, 1758 -- invalid -- Pato cucharón-norteño, Northern Shoveler, canard souchet
  Anas crecca Linnaeus, 1758 -- valid -- Eurasian Teal, Cerceta ala verde, Green-winged Teal, Sarcelle d'hiver, Cerceta común, marrequinha, Common Teal
  Anas cyanoptera Vieillot, 1816 -- invalid -- Cerceta canela, Cinnamon Teal, sarcelle cannelle
  Anas diazi Ridgway, 1886 -- valid -- Mexican Duck, Pato mexicano, Canard du Mexique, pato-mexicano
  Anas discors Linnaeus, 1766 -- invalid -- Cerceta ala azul, Blue-winged Teal, sarcelle à ailes bleues
  Anas fulvigula Ridgway, 1874 -- valid -- Mottled Duck, Pato tejano, Canard brun, Ánade moteado, pato-da-flórida
  Anas penelope Linnaeus, 1758 -- invalid -- Pato silbón, Eurasian Wigeon, canard siffleur
  Anas platyrhynchos Linnaeus, 1758 -- valid -- Pato de collar, Mallard, Canard colvert, Ánade azulón, pato-real
  Anas querquedula Linnaeus, 1758 -- invalid -- Cerceta ceja blanca, Garganey, sarcelle d'été
  Anas strepera Linnaeus, 1758 -- invalid -- Pato friso, Gadwall, canard chipeau
  Aneides lugubris (Hallowell, 1849) -- valid -- Salamandra arbórea, Arboreal Salamander
  Anelytropsis papillosus Cope, 1885 -- valid -- Lagartija Ciega Mexicana, Mexican Blind Lizard, Lagartija-ciega mexicana
  Anhinga anhinga (Linnaeus, 1766) -- valid -- Anhinga, Anhinga americana, Anhinga d'Amérique
  Anniella geronimensis Shaw, 1940 -- valid -- Lagartija sin patas de Isla Jerónimo, Baja California Legless Lizard
  Anniella pulchra Gray, 1852 -- valid -- Lagartija sin patas californiana, California Legless Lizard, Silvery Legless Lizard, Northern Legless Lizard
  Anolis adleri H. M. Smith, 1972 -- invalid -- Anolis de Adler
  Anolis anisolepis H. M. Smith, Burley and Fritts, 1968 -- valid -- Anolis adornado, Chiapas Ornate Anole
  Anolis baccatus Bocourt, 1873 -- invalid -- Anolis de Bocourt
  Anolis barkeri K. P. Schmidt, 1939 -- valid -- Anolis de Barker, Barker's Anole
  Anolis biporcatus (Wiegmann, 1834) -- valid -- Anolis verde neotropical, Giant Green Anole, Neotropical Green Anole
  Anolis breedlovei H. M. Smith and Paulson, 1968 -- invalid -- Anolis de Breedlove
  Anolis capito W. C. H. Peters, 1863 -- valid -- Anolis jaspeado, Bighead Anole
  Anolis carolinensis Voigt in Cuvier and Voigt, 1832 -- valid -- Green Anole, Anolis verde, anole vert
  Anolis compressicaudus H. M. Smith and Kerster, 1955 -- valid -- Anolis de Malpaso, Malposo Scaly Anole
  Anolis crassulus Cope, 1864 -- valid -- Anolis adornado, Ornate Anole
  Anolis cuprinus H. M. Smith, 1964 -- valid -- Anolis chiapaneco, Copper Anole
  Anolis cymbops Cope, 1864 -- valid -- Anolis veracruzano, Cope's Veracruz Anole
  Anolis dollfusianus Bocourt, 1873 -- valid -- Anolis cafetalero, Coffee Anole
  Anolis duellmani Fitch and Henderson, 1973 -- valid -- Anolis de Duellman, Duellman's Pigmy Anole
  Anolis dunni H. M. Smith, 1936 -- valid -- Anolis de Dunn, Dunn's Anole
  Anolis forbesi H. M. Smith and Van Gelder, 1955 -- invalid -- Anolis de Forbes
  Anolis isthmicus Fitch, 1978 -- invalid -- Anolis tehuano
  Anolis laeviventris (Wiegmann, 1834) -- valid -- Anolis blanco, White Anole
  Anolis lemurinus Cope, 1861 -- valid -- Anolis fantasma, Ghost Anole
  Anolis liogaster Boulenger, 1905 -- valid -- Anolis rojo, Guerreran Anole
  Anolis macrinii H. M. Smith, 1968 -- valid -- Anolis de Macrinus, Macrinius' Anole
  Anolis matudai H. M. Smith, 1956 -- valid -- Anolis de Matuda, Matuda's Anole
  Anolis microlepidotus Davis, 1954 -- valid -- Anolis guerrerense, Guerreran Oak Anole
  Anolis milleri H. M. Smith in H. M. Smith and Taylor, 1950 -- valid -- Anolis de Miller, Miller's Anole
  Anolis naufragus (Campbell, Hillis and Lamar, 1989) -- valid -- Anolis de Hidalgo, Hidalgo Anole
  Anolis nebuloides Bocourt, 1873 -- valid -- Anolis falso-pañuelo, False Clouded Anole
  Anolis nebulosus (Wiegmann, 1834) -- valid -- Anolis pañuelo, Clouded Anole
  Anolis omiltemanus Davis, 1954 -- valid -- Anolis de Omilteme, Omilteme Anole
  Anolis parvicirculatus Álvarez del Toro and H. M. Smith, 1956 -- valid -- Anolis de Barriozabal, Berriozabal Anole
  Anolis pentaprion Cope, 1863 -- valid -- Anolis liquen, Lichen Anole
  Anolis polyrhachis H. M. Smith, 1968 -- invalid -- Anolis de Sierra de Juárez
  Anolis pygmaeus Álvarez del Toro and H. M. Smith, 1956 -- valid -- Anolis pigmeo-de Chiapas, Chiapas Pigmy Anole
  Anolis quercorum Fitch, 1978 -- valid -- Anolis encinero, Oaxacan Oak Anole, Gray Anole
  Anolis rodriguezi Bocourt, 1873 -- invalid -- Anolis liso
  Anolis sagrei Cocteau in A. M. C. Duméril and Bibron, 1837 -- valid -- Brown Anole, Anolis café, Cuban Brown Anole
  Anolis schmidti H. M. Smith, 1939 -- invalid -- Anolis de Schmidt
  Anolis sericeus Hallowell, 1856 -- valid -- Anolis sedoso, Silky Anole
  Anolis simmonsi Holman, 1964 -- invalid -- Anolis de Simmons
  Anolis subocularis Davis, 1954 -- valid -- Anolis del Pacífico, Pacific Anole
  Anolis taylori H. M. Smith and Spieler, 1945 -- valid -- Anolis de Taylor, Taylor's Anole
  Anolis tropidonotus W. C. H. Peters, 1863 -- valid -- Anolis escamoso-mayor, Greater Scaly Anole
  Anolis uniformis Cope, 1885 -- valid -- Anolis escamoso-menor, Lesser Scaly Anole
  Anolis utowanae Barbour, 1932 -- invalid -- Anolis de Utowana
  Anotheca spinosa (Steindachner, 1864) -- invalid -- Rana-de árbol coronada
  Anous minutus F. Boie, 1844 -- valid -- Black Noddy, Charrán-bobo negro, Noddi noir, Tiñosa menuda, trinta-réis-preto, tinhosa-de-barrete
  Anous stolidus (Linnaeus, 1758) -- valid -- Brown Noddy, Charrán-bobo café, Noddi brun, Tiñosa boba, trinta-réis-escuro, tinhosa
  Anser albifrons (Scopoli, 1769) -- valid -- Ganso careto-mayor, Greater White-fronted Goose, Oie rieuse, Ánsar careto, ganso-de-testa-branca
  Anthracothorax prevostii (R. Lesson, 1832) -- valid -- Colibrí garganta negra, Green-breasted Mango
  Anthus cervinus (Pallas, 1811) -- valid -- Red-throated Pipit, Bisbita garganta roja
  Anthus rubescens (Tunstall, 1771) -- valid -- Bisbita de agua, Buff-bellied Pipit, American Pipit, pipit d'Amérique
  Anthus spragueii (Audubon, 1844) -- valid -- Sprague's Pipit, Bisbita llanera
  Antilocapra americana (Ord, 1815) -- valid -- pronghorn, Berrendo, Pronghorn
  Antrozous pallidus (LeConte, 1856) -- valid -- Murciélago-desértico norteño, Pallid Bat
  Apalone ater (Webb and Legler, 1960) -- invalid -- Cuatro Cienegas softshell turtle, Tortuga-casco suave de Cuatro Ciénegas
  Apalone spinifera (Le Sueur, 1827) -- valid -- Spiny Softshell, tortue-molle à épines, Tortuga-casco suave espinosa, Spiny Softshell Turtle
  Aphelocoma coerulescens (Bosc, 1795) -- valid -- Scrub Jay, Chara pecho rayado, Florida Scrub Jay, Florida Scrub-Jay
  Aphelocoma ultramarina (Bonaparte, 1825) -- valid -- Gray-breasted Jay, Chara pecho gris, Mexican Jay
  Aphelocoma unicolor (Du Bus de Gisignies, 1847) -- valid -- Chara unicolor, Unicolored Jay
  Aphriza virgata (J. F. Gmelin, 1789) -- invalid -- Surfbird, Playero roquero, Bécasseau du ressac
  Aquila chrysaetos (Linnaeus, 1758) -- valid -- Águila real, Golden Eagle, Aigle royal
  Ara macao (Linnaeus, 1758) -- valid -- Scarlet Macaw, Guacamaya roja, Ara rouge, Guacamayo macao, araracanga
  Ara militaris (Linnaeus, 1766) -- valid -- Military Macaw, Guacamaya verde, Ara militaire, Guacamayo militar, arara-militar
  Aramides axillaris Lawrence, 1863 -- valid -- Rascón cuello rufo, Rufous-necked Wood Rail, Rufous-necked Wood-Rail
  Aramides cajanea (Statius Muller, 1776) -- valid -- Rascón cuello gris, Grey-necked Wood Rail, Gray-necked Wood-Rail
  Aramus guarauna (Linnaeus, 1766) -- valid -- Limpkin, Carao
  Aratinga canicularis (Linnaeus, 1758) -- invalid -- Orange-fronted Parakeet, Perico frente naranja
  Aratinga holochlora (P. L. Sclater, 1859) -- invalid -- Green Parakeet, Perico mexicano
  Aratinga nana (Vigors, 1830) -- invalid -- Jamaican Parakeet, Olive-throated Parakeet, Perico pecho sucio
  Aratinga strenua (Ridgway, 1915) -- invalid -- Pacific Parakeet, Perico centroamericano
  Archilochus alexandri (Bourcier & Mulsant, 1846) -- valid -- Black-chinned Hummingbird, Colibrí barba negra
  Archilochus colubris (Linnaeus, 1758) -- valid -- Colibrí garganta rubí, Ruby-throated Hummingbird, colibri à gorge rubis
  Arctocephalus townsendi Merriam, 1897 -- invalid -- Guadalupe Fur Seal, Lobo-fino de Guadalupe
  Ardea herodias Linnaeus, 1758 -- valid -- Garza morena, Great Blue Heron, Grand Héron
  Arenaria interpres (Linnaeus, 1758) -- valid -- Vuelvepiedras rojizo, Ruddy Turnstone, Tournepierre à collier, Vuelvepiedras común, vira-pedras, rola-do-mar
  Arenaria melanocephala (Vigors, 1829) -- valid -- Black Turnstone, Vuelvepiedras negro, Tournepierre noir, Vuelvepiedras oscuro, vira-pedras-preto
  Aristelliger georgeensis (Bocourt, 1873) -- valid -- Geco pestañudo
  Arizona elegans Kennicott in Baird, 1859 -- valid -- Glossy Snake, Culebra brillante
  Arremon aurantiirostris Lafresnaye, 1847 -- valid -- Rascador pico naranja, Orange-billed Sparrow, Tohi à bec orange, Cerquero piquinaranja
  Arremonops chloronotus (Salvin, 1861) -- valid -- Rascador dorso verde, Green-backed Sparrow, Tohi à dos vert, Cerquero dorsiverde
  Arremonops rufivirgatus (Lawrence, 1851) -- valid -- Tohi olive, Cerquero oliváceo, Olive Sparrow, Rascador oliváceo
  Artibeus jamaicensis Leach, 1821 -- valid -- Murciélago-frutero de Jamaica, Jamaican Fruit-eating Bat
  Asio flammeus (Pontoppidan, 1763) -- valid -- Búho cuerno corto, Short-eared Owl, hibou des marais
  Asio otus (Linnaeus, 1758) -- valid -- Búho cara café, Long-eared Owl, hibou moyen-duc
  Asio stygius (Wagler, 1832) -- valid -- Búho cara oscura, Stygian Owl
  Aspatha gularis (Lafresnaye, 1840) -- valid -- Momoto garganta azul, Blue-throated Motmot, Momoto gorjiazul, Motmot à gorge bleue
  Ateles geoffroyi Kuhl, 1820 -- valid -- Mono-araña centroamericano, Central American Spider Monkey
  Athene cunicularia (Molina, 1782) -- valid -- Tecolote llanero, Burrowing Owl, chevêche des terriers
  Atlapetes albinucha (d'Orbigny & Lafresnaye, 1838) -- valid -- Atlapetes nuca blanca, White-naped Brush Finch, White-naped Brush-Finch, White-naped Brushfinch, Tohi à calotte blanche, Atlapetes nuquiblanco, White-naped Brush-finch
  Atlapetes pileatus Wagler, 1831 -- valid -- Atlapetes gorra rufa, Rufous-capped Brush-Finch, Rufous-capped Brush Finch, Rufous-capped Brushfinch, Tohi à calotte rousse, Atlapetes coronirrufo, Rufous-capped Brush-finch
  Atropoides nummifer (Rüppell, 1845) -- valid -- Nauyaca o nayaraca saltadora, Jumping Pit Viper
  Atropoides olmec (Perez-Higareda, H. M. Smith and Julia-Zertuche, 1985) -- valid -- Nauyaca de Los Tuxtlas, Olmecan Pit Viper
  Atthis ellioti Ridgway, 1878 -- invalid -- Zumbador magenta, Wine-throated Hummingbird
  Atthis heloisa (R. Lesson & Delattre, 1839) -- invalid -- Bumblebee Hummingbird, Zumbador mexicano
  Attila spadiceus (Gmelin, 1789) -- valid -- Bright-rumped Attila, Atila
  Aulacorhynchus prasinus (Gould, 1833) -- valid -- Tucaneta verde, Emerald Toucanet
  Auriparus flaviceps (Sundevall, 1850) -- valid -- Verdin, Baloncillo
  Automolus ochrolaemus (Tschudi, 1844) -- valid -- Buff-throated Foliage-gleaner, Breñero garganta pálida
  Automolus rubiginosus (P. L. Sclater, 1857) -- valid -- Ruddy Foliage-gleaner, Breñero rojizo
  Aythya affinis (Eyton, 1838) -- valid -- Pato boludo-menor, Lesser Scaup, Petit Fuligule, Porrón bola, negrelho-americano
  Aythya americana (Eyton, 1838) -- valid -- Pato cabeza roja, Redhead, Fuligule à tête rouge, Porrón americano, zarro-americano
  Aythya collaris (Donovan, 1809) -- valid -- Pato pico anillado, Ring-necked Duck, Fuligule à collier, Porrón acollarado, caturro
  Aythya marila (Linnaeus, 1761) -- valid -- Pato boludo-mayor, Greater Scaup, Fuligule milouinan, Porrón bastardo, negrelho
  Aythya valisineria (A. Wilson, 1814) -- valid -- Pato coacoxtle, Canvasback, Fuligule à dos blanc, Porrón coacoxtle, zarro-grande
  Baeolophus bicolor (Linnaeus, 1766) -- valid -- Tufted Titmouse, Carbonero cresta negra
  Baeolophus inornatus (Gambel, 1845) -- valid -- Plain Titmouse, Carbonero sencillo, Oak Titmouse
  Baeolophus wollweberi (Bonaparte, 1850) -- valid -- Bridled Titmouse, Carbonero embridado
  Baiomys taylori (Thomas, 1887) -- valid -- Ratón-pigmeo norteño, Northern Pygmy Mouse
  Balaenoptera acutorostrata Lacépède, 1804 -- valid -- Common Minke Whale, Minke Whale, northern minke whale, Ballena menor, petit rorqual
  Balaenoptera borealis Lesson, 1828 -- valid -- Sei Whale, Ballena de Sei, rorqual boréal
  Balaenoptera edeni Anderson, 1879 -- valid -- Eden's whale, Ballena tropical, Bryde's whale
  Balaenoptera musculus (Linnaeus, 1758) -- valid -- Blue Whale, Ballena azul, rorqual bleu
  Balaenoptera physalus (Linnaeus, 1758) -- valid -- Fin Whale, finback whale, rorqual commun, Ballena de aleta
  Barisia imbricata (Wiegmann, 1828) -- valid -- Lagarto alicante del Popocatépetl, Imbricate Alligator Lizard, Transvolcanic Alligator Lizard
  Barisia levicollis Stejneger, 1890 -- valid -- Lagarto alicante de Chihuahua, Chihuahuan Alligator Lizard
  Barisia rudicollis (Wiegmann, 1828) -- valid -- Lagarto alicante cuello rugoso, Rough-necked Alligator Lizard
  Bartramia longicauda (Bechstein, 1812) -- valid -- Zarapito ganga, Upland Sandpiper, Maubèche des champs, Correlimos batitú, maçarico-do-campo
  Basileuterus belli (Giraud Jr, 1841) -- valid -- Chipe ceja dorada, Golden-browed Warbler, Paruline à sourcils dorés
  Basileuterus culicivorus (Deppe, 1830) -- valid -- Chipe corona dorada, Stripe-crowned Warbler, Paruline à couronne dorée, Golden-crowned Warbler
  Basileuterus rufifrons (Swainson, 1838) -- valid -- Chipe gorra rufa, Rufous-capped Warbler, Paruline à calotte rousse
  Basiliscus vittatus Wiegmann, 1828 -- valid -- Brown Basilisk, Basilisco rayado
  Bassariscus astutus (Lichtenstein, 1830) -- valid -- Ringtail, Cacomixtle norteño
  Batrachoseps pacificus (Cope, 1865) -- valid -- Salamandra-delgada del Pacífico, Pacific Slender Salamander, Channel Islands Slender Salamander
  Bipes biporus (Cope, 1894) -- valid -- Lagartija-topo cinco dedos, Five-toed Worm Lizard
  Bipes canaliculatus Latreille in Sonnini and Latreille, 1801 -- valid -- Lagartija-topo cuatro dedos, Four-toed Worm Lizard
  Bipes tridactylus (Dugès, 1894) -- valid -- Lagartija-topo tres dedos, Three-toed Worm Lizard
  Bison bison (Linnaeus, 1758) -- valid -- American bison, bison, Bisonte americano, American Bison
  Bogertophis rosaliae (Mocquard, 1899) -- valid -- Baja California Rat Snake, Baja California Ratsnake, Culebra-ratonera de Baja California
  Bogertophis subocularis (Brown, 1901) -- valid -- Trans-Pecos Rat Snake, Culebra-ratonera de Transpecos, Trans-Pecos Ratsnake
  Bolborhynchus lineola (Cassin, 1853) -- valid -- Barred Parakeet, Perico barrado, Toui catherine, Catita barrada, periquito-catarina
  Bolitoglossa engelhardti (Schmidt, 1936) -- valid -- Salamandra-lengua hongueada de Engelhardt
  Bolitoglossa flavimembris (Schmidt, 1936) -- valid -- Salamandra-lengua hongueada patas amarillas
  Bolitoglossa flaviventris (Schmidt, 1936) -- valid -- Salamandra-lengua hongueada vientre amarillo
  Bolitoglossa hermosa Papenfuss, Wake and Adler, 1984 -- valid -- Salamandra-lengua hongueada guerrerense
  Bolitoglossa lincolni (Stuart, 1943) -- valid -- Salamandra-lengua hongueada de Lincon
  Bolitoglossa macrinii (Lafrentz, 1930) -- valid -- Salamandra-lengua hongueada oaxaqueña
  Bolitoglossa mexicana Duméril, Bibron and Duméril, 1854 -- valid -- Salamandra-lengua hongueada mexicana
  Bolitoglossa mulleri (Brocchi, 1883) -- valid -- Salamandra-lengua hongueada de Muller
  Bolitoglossa occidentalis Taylor, 1941 -- valid -- Salamandra-lengua hongueada occidental
  Bolitoglossa platydactyla (Gray, 1831) -- valid -- Salamandra-lengua hongueada pies anchos
  Bolitoglossa riletti Holman, 1964 -- valid -- Salamandra-lengua hongueada de Rilett
  Bolitoglossa rostrata (Brocchi, 1883) -- valid -- Salamandra-lengua hongueada narigona
  Bolitoglossa rufescens (Cope, 1869) -- valid -- Salamandra-lengua hongueada rojiza
  Bolitoglossa stuarti Wake and Brame, 1969 -- valid -- Salamandra-lengua hongueada de Stuart
  Bolitoglossa veracrucis Taylor, 1951 -- valid -- Salamandra-lengua hongueada veracruzana
  Bolitoglossa yucatana (Peters, 1882) -- valid -- Salamandra-lengua hongueada
  Bombycilla cedrorum Vieillot, 1808 -- valid -- Ampelis chinito, Cedar Waxwing, jaseur d'Amérique
  Botaurus lentiginosus (Rackett, 1813) -- valid -- Avetoro norteño, American Bittern, Butor d'Amérique
  Botaurus pinnatus (Wagler, 1829) -- valid -- Avetoro neotropical, Pinnated Bittern, Butor mirasol
  Bothriechis aurifer (Salvin, 1860) -- valid -- Nauyaca-de árbol manchas amarillas, Yellow-blotched Palm Pit Viper
  Bothriechis bicolor (Bocourt, 1868) -- valid -- Nauyaca-de árbol bicolor, Guatemala Palm Pit Viper
  Bothriechis rowleyi (Bogert, 1968) -- valid -- Nauyaca-de árbol de Rowley, Rowley's Palm Pit Viper
  Bothrops asper (Garman, 1883) -- valid -- Nauyaca-terciopelo real, Terciopelo, Terciopelo
  Brachyramphus marmoratus (J. F. Gmelin, 1789) -- valid -- Marbled Murrelet, Guillemot marbré, Mérgulo jaspeado americano, mérgulo-marmorizado
  Branta bernicla (Linnaeus, 1758) -- valid -- Brant Goose, Brent Goose, Ganso de collar, Brant, Bernache cravant, Barnacla carinegra, ganso-de-faces-pretas
  Branta canadensis (Linnaeus, 1758) -- valid -- Ganso canadiense, Canada Goose, Bernache du Canada, Barnacla canadiense grande, ganso-do-canadá
  Brotogeris jugularis (P. L. S. Müller, 1776) -- valid -- Orange-chinned Parakeet, Perico ala amarilla, Toui à menton d'or, Catita churica, periquito-de-queixo-laranja
  Bubo virginianus (J. F. Gmelin, 1788) -- valid -- Búho cornudo, Great Horned Owl, grand-duc d'Amérique
  Bubulcus ibis (Linnaeus, 1758) -- valid -- Garza ganadera, Cattle Egret, Héron garde-boeufs, Western Cattle Egret
  Bucephala albeola (Linnaeus, 1758) -- valid -- Pato monja, Bufflehead, Petit Garrot, Porrón albeola, olho-dourado-de-touca
  Bucephala clangula (Linnaeus, 1758) -- valid -- Pato chillón, Common Goldeneye, Garrot à oeil d'or, Porrón osculado, olho-dourado
  Bufo alvarius Girard in Baird, 1859 -- invalid -- Sonoran Desert Toad, Colorado River Toad, Sapo del desierto-sonorense
  Bufo bocourti Brocchi, 1877 -- invalid -- Sapo de Bocourt
  Bufo boreas Baird and Girard, 1852 -- invalid -- Western Toad, Sapo del Oeste
  Bufo canaliferus Cope, 1877 -- invalid -- Sapo serrano
  Bufo cavifrons Firschein, 1950 -- invalid -- Sapo de montaña
  Bufo coccifer Cope, 1866 -- invalid -- Sapo chichito
  Bufo cognatus Say in James, 1822 -- invalid -- Great Plains Toad, Sapo de la gran planicie
  Bufo compactilis Wiegmann, 1833 -- invalid -- Sapo de meseta
  Bufo cristatus Wiegmann, 1833 -- invalid -- Sapo cresta grande
  Bufo debilis Girard, 1854 -- invalid -- Green Toad, Sapo verde
  Bufo gemmifer Taylor, 1940 -- invalid -- Sapo joya
  Bufo kelloggi Taylor, 1938 -- invalid -- Sapo mexicano-menor
  Bufo marinus (Linnaeus, 1758) -- invalid -- Giant Toad, Sapo gigante, Marine Toad, Cane Toad
  Bufo marmoreus Wiegmann, 1833 -- invalid -- Sapo marmoleado
  Bufo mazatlanensis Taylor, 1940 -- invalid -- Sapo sinaloense
  Bufo microscaphus Cope, 1867 -- invalid -- Sapo del suroeste, Arizona Toad, Southwestern Toad
  Bufo occidentalis Camerano, 1879 -- invalid -- Sapo pinero
  Bufo perplexus Taylor, 1943 -- invalid -- Sapo perplejo
  Bufo punctatus Baird and Girard, 1852 -- invalid -- Red-spotted Toad, Sapo manchas rojas
  Bufo retiformis Sanders and Smith, 1951 -- invalid -- Sonoran Green Toad, Sapo verde-sonorense
  Bufo speciosus Girard, 1854 -- invalid -- Texas Toad, Sapo texano
  Bufo tacanensis Smith, 1952 -- invalid -- Sapo del Tacaná
  Bufo valliceps Wiegmann, 1833 -- invalid -- Sapo del golfo, Gulf Coast Toad
  Burhinus bistriatus (Wagler, 1829) -- valid -- Double-striped Thick-knee, Alcaraván americano, Oedicnème bistrié, Alcaraván venezolano, téu-téu-da-savana
  Busarellus nigricollis (Latham, 1790) -- valid -- Aguililla canela, Black-collared Hawk, Busarelle à tête blanche
  Buteo albicaudatus Vieillot, 1816 -- valid -- White-tailed Hawk, Aguililla cola blanca, Buse à queue blanche
  Buteo albonotatus Kaup, 1847 -- valid -- Zone-tailed Hawk, Aguililla aura, Buse à queue barrée
  Buteo brachyurus Vieillot, 1816 -- valid -- Short-tailed Hawk, Aguililla cola corta, Buse à queue courte
  Buteo jamaicensis (Gmelin, 1788) -- valid -- Aguililla cola roja, Red-tailed Hawk, Buse à queue rousse
  Buteo lagopus (Pontoppidan, 1763) -- valid -- Aguililla ártica, Rough-legged Hawk, Roughleg, Buse pattue, Rough-legged Buzzard
  Buteo lineatus (Gmelin, 1788) -- valid -- Aguililla pecho rojo, Red-shouldered Hawk, Buse à épaulettes
  Buteo nitidus (Latham, 1790) -- valid -- Aguililla gris, Buse cendrée, Grey Hawk, Gray Hawk
  Buteo platypterus (Vieillot, 1823) -- valid -- Aguililla ala ancha, Broad-winged Hawk, Petite Buse
  Buteo regalis (G. R. Gray, 1844) -- valid -- Ferruginous Hawk, Aguililla real, Buse rouilleuse
  Buteo swainsoni Bonaparte, 1838 -- valid -- Aguililla de Swainson, Swainson's Hawk, Buse de Swainson
  Buteogallus anthracinus (Deppe, 1830) -- valid -- Common Black-Hawk, Aguililla-negra menor, Common Black Hawk, Buse noire
  Buteogallus urubitinga (Gmelin, 1788) -- valid -- Aguililla-negra mayor, Great Black-Hawk, Great Black Hawk, Buse urubu
  Butorides virescens (Linnaeus, 1758) -- valid -- Green Heron, Garceta verde, Héron vert
  Cacicus melanicterus (Bonaparte, 1825) -- valid -- Cacique mexicano, Yellow-winged Cacique, Mexican Cacique
  Cairina moschata (Linnaeus, 1758) -- valid -- Muscovy Duck, Pato real, Canard musqué, Pato criollo, pato-do-mato
  Calamospiza melanocorys Stejneger, 1885 -- valid -- Chingolo albinegro, Lark Bunting, bruant noir et blanc, Gorrión ala blanca
  Calcarius lapponicus (Linnaeus, 1758) -- valid -- Escribano ártico, Lapland Longspur, bruant lapon
  Calcarius ornatus (J. K. Townsend, 1837) -- valid -- Chestnut-collared Longspur, Escribano collar castaño
  Calidris alba (Pallas, 1764) -- valid -- Playero blanco, Sanderling, Bécasseau sanderling, Correlimos tridáctilo, maçarico-branco, pilrito-das-praias
  Calidris alpina (Linnaeus, 1758) -- valid -- Playero dorso rojo, Dunlin, Bécasseau variable, Correlimos común, pilrito-de-peito-preto
  Calidris bairdii (Coues, 1861) -- valid -- Playero de Baird, Baird's Sandpiper, Bécasseau de Baird, Correlimos de Baird, maçarico-de-bico-fino, pilrito-de-bico-fino
  Calidris canutus (Linnaeus, 1758) -- valid -- Playero canuto, Red Knot, Bécasseau maubèche, Correlimos gordo, maçarico-de-papo-vermelho, seixoeira
  Calidris fuscicollis (Vieillot, 1819) -- valid -- Playero rabadilla blanca, White-rumped Sandpiper, Bécasseau à croupion blanc, Correlimos culiblanco, maçarico-de-sobre-branco, pilrito-de-sobre-branco
  Calidris himantopus (Bonaparte, 1826) -- valid -- Playero zancón, Stilt Sandpiper, Bécasseau à échasses, Correlimos zancolín, maçarico-pernilongo, pilrito-pernilongo
  Calidris mauri (Cabanis, 1857) -- valid -- Playero occidental, Western Sandpiper, Bécasseau d'Alaska, Correlimos de Alaska, pilrito-miúdo
  Calidris melanotos (Vieillot, 1819) -- valid -- Playero pectoral, Pectoral Sandpiper, Bécasseau à poitrine cendrée, Correlimos pectoral, maçarico-de-colete, pilrito-de-colete
  Calidris minutilla (Vieillot, 1819) -- valid -- Playero chichicuilote, Least Sandpiper, Bécasseau minuscule, Correlimos menudillo, maçariquinho, pilrito-anão
  Calidris pusilla (Linnaeus, 1766) -- valid -- Playero semipalmeado, Semipalmated Sandpiper, Bécasseau semipalmé, Correlimos semipalmeado, maçarico-rasteirinho, pilrito-rasteirinho
  Callipepla californica (Shaw, 1798) -- valid -- Colin de Californie, Colín de California, codorniz-da-califórnia, Codorniz californiana, Californian Quail, California Quail
  Callipepla douglasii (Vigors, 1829) -- valid -- Colin élégant, Colín elegante, colim-elegante, Codorniz cresta dorada, Elegant Quail
  Callipepla gambelii (Gambel, 1843) -- valid -- Colin de Gambel, Colín de Gambel, colim-de-elmo, Gambel's Quail, Codorniz chiquiri
  Callipepla squamata (Vigors, 1830) -- valid -- Colin écaillé, Colín escamado, colim-escamoso, Scaled Quail, Codorniz escamosa
  Callisaurus draconoides Blainville, 1835 -- valid -- Zebra-tailed Lizard, Lagartija cachora
  Calocitta colliei (Vigors, 1829) -- valid -- Urraca-hermosa cara negra, Black-throated Magpie-Jay
  Calocitta formosa (Swainson, 1827) -- valid -- Urraca-hermosa cara blanca, White-throated Magpie-Jay
  Calonectris diomedea (Scopoli, 1769) -- valid -- Puffin cendré, Pardela de Cory, Cory's Shearwater, puffin cendrée
  Calothorax lucifer (Swainson, 1827) -- valid -- Lucifer Hummingbird, Colibrí lucifer, Lucifer Sheartail
  Calothorax pulcher Gould, 1859 -- valid -- Colibrí oaxaqueño, Beautiful Sheartail, Beautiful Hummingbird
  Calypte anna (R. Lesson, 1829) -- valid -- Anna's Hummingbird, Colibrí cabeza roja
  Calypte costae (Bourcier, 1839) -- valid -- Costa's Hummingbird, Colibrí cabeza violeta
  Campephilus guatemalensis (Hartlaub, 1844) -- valid -- Carpintero pico plata, Pale-billed Woodpecker
  Campephilus imperialis (Gould, 1832) -- valid -- Imperial Woodpecker, Carpintero imperial
  Camptostoma imberbe P. L. Sclater, 1857 -- valid -- Northern Beardless-Tyrannulet, Mosquero lampiño, Northern Beardless Tyrannulet
  Campylopterus curvipennis (Deppe, 1830) -- invalid -- Fandanguero cola cuña, Wedge-tailed Sabrewing, Curve-winged Sabrewing
  Campylopterus excellens (Wetmore, 1941) -- invalid -- Fandanguero cola larga, Long-tailed Sabrewing
  Campylopterus hemileucurus (Deppe, 1830) -- valid -- Violet Sabrewing
  Campylopterus rufus R. Lesson, 1840 -- invalid -- Fandanguero rojizo, Rufous Sabrewing
  Campylorhynchus brunneicapillus (Lafresnaye, 1835) -- valid -- Cactus Wren
  Campylorhynchus chiapensis Salvin & Godman, 1891 -- valid -- Giant Wren
  Campylorhynchus gularis P. L. Sclater, 1861 -- valid -- Matraca serrana, Spotted Wren
  Campylorhynchus jocosus P. L. Sclater, 1860 -- valid -- Matraca del Balsas, Boucard's Wren
  Campylorhynchus megalopterus Lafresnaye, 1845 -- valid -- Gray-barred Wren, Grey-barred Wren
  Campylorhynchus rufinucha (Lesson, 1838) -- valid -- Matraca nuca rufa, Rufous-naped Wren
  Campylorhynchus yucatanicus (Hellmayr, 1934) -- valid -- Yucatan Wren
  Campylorhynchus zonatus (Lesson, 1832) -- valid -- Matraca tropical, Band-backed Wren
  Canis latrans Say, 1823 -- valid -- Coyote, coyote, Coyote
  Canis lupus Linnaeus, 1758 -- valid -- Wolf, Gray Wolf, Lobo gris, loup
  Cantorchilus modestus (Cabanis, 1861) -- valid -- Plain Wren, Chivirín modesto
  Caprimulgus badius (Bangs & Peck, 1908) -- invalid -- Tapacamino huil, Yucatan Nightjar
  Caprimulgus carolinensis J. F. Gmelin, 1789 -- invalid -- Tapacamino de Carolina, Chuck-will's-widow, engoulevent de Caroline
  Caprimulgus maculicaudus (Lawrence, 1862) -- invalid -- Tapacamino cola pinta, Spot-tailed Nightjar
  Caprimulgus ridgwayi (Nelson, 1897) -- invalid -- Buff-collared Nightjar, Tapacamino tu-cuchillo
  Caprimulgus salvini Hartert, 1892 -- invalid -- Tapacamino ticuer, Tawny-collared Nightjar
  Caprimulgus vociferus A. Wilson, 1812 -- invalid -- Tapacamino cuerporruín-norteño, Whip-poor-will, engoulevent bois-pourri
  Caracara plancus (J. F. Miller, 1777) -- valid -- Crested Caracara, Southern Caracara, Caracara quebrantahuesos, Southern Crested Caracara, Caracara huppé, Carancho meridional, carcará
  Cardellina rubrifrons (Giraud Jr, 1841) -- valid -- Chipe cara roja, Paruline à face rouge, Red-faced Warbler
  Cardinalis cardinalis (Linnaeus, 1758) -- valid -- Cardenal rojo, Northern Cardinal, cardinal rouge
  Cardinalis sinuatus Bonaparte, 1838 -- valid -- Pyrrhuloxia, Cardenal pardo
  Carduelis atriceps (Salvin, 1863) -- invalid -- Jilguero corona negra, Black-capped Siskin
  Carduelis lawrencei Cassin, 1850 -- invalid -- Lawrence's Goldfinch, Jilguero gris
  Carduelis notata Du Bus de Gisignies, 1847 -- invalid -- Jilguero encapuchado, Black-headed Siskin
  Carduelis pinus (A. Wilson, 1810) -- invalid -- Jilguero pinero, Pine Siskin, tarin des pins
  Carduelis psaltria (Say, 1822) -- invalid -- Lesser Goldfinch, Jilguero dominico
  Carduelis tristis (Linnaeus, 1758) -- invalid -- Jilguero canario, American Goldfinch, chardonneret jaune
  Caretta caretta (Linnaeus, 1758) -- valid -- Loggerhead, Tortuga-marina caguama, Loggerhead Sea Turtle
  Carpodacus cassinii S. F. Baird, 1854 -- invalid -- Cassin's Finch, Pinzón de Cassin
  Carpodacus mexicanus (P. L. Statius Müller, 1776) -- invalid -- Pinzón mexicano, House Finch, roselin familier
  Carpodacus purpureus (J. F. Gmelin, 1789) -- invalid -- Pinzón purpúreo, Purple Finch, roselin pourpré
  Caryothraustes poliogaster (Du Bus de Gisignies, 1847) -- valid -- Picogordo cara negra, Black-faced Grosbeak
  Casmerodius albus (Linnaeus, 1758) -- invalid -- Garza blanca, Great Egret, grande aigrette
  Catharacta maccormicki (H. Saunders, 1893) -- invalid -- Págalo sureño, South Polar Skua, labbe de Mccormick
  Cathartes aura (Linnaeus, 1758) -- valid -- Zopilote aura, Turkey Vulture, Urubu à tête rouge
  Cathartes burrovianus Cassin, 1845 -- valid -- Zopilote sabanero, Lesser Yellow-headed Vulture, Urubu à tête jaune
  Catharus aurantiirostris (Hartlaub, 1850) -- valid -- Zorzal pico naranja, Orange-billed Nightingale-Thrush
  Catharus dryas (Gould, 1855) -- valid -- Zorzal pecho amarillo, Spotted Nightingale-Thrush
  Catharus frantzii Cabanis, 1861 -- valid -- Zorzal de Frantzius, Ruddy-capped Nightingale-Thrush
  Catharus fuscescens (Stephens, 1817) -- valid -- Zorzal rojizo, Veery, grive fauve
  Catharus guttatus (Pallas, 1811) -- valid -- Zorzal cola rufa, Hermit Thrush, grive solitaire
  Catharus mexicanus (Bonaparte, 1856) -- valid -- Zorzal corona negra, Black-headed Nightingale-Thrush
  Catharus minimus (Lafresnaye, 1848) -- valid -- Zorzal cara gris, Gray-cheeked Thrush, grive à joues grises, Grey-cheeked Thrush
  Catharus occidentalis P. L. Sclater, 1859 -- valid -- Zorzal mexicano, Russet Nightingale-Thrush
  Catharus ustulatus (Nuttall, 1840) -- valid -- Zorzal de Swainson, Swainson's Thrush, grive à dos olive
  Catherpes mexicanus (Swainson, 1829) -- valid -- Canyon Wren, Chivirín barranqueño
  Catoptrophorus semipalmatus (J. F. Gmelin, 1789) -- invalid -- Willet, Willet, chevalier semipalmé
  Celestus enneagrammus (Cope, 1861) -- valid -- Celesto huasteco, Huaxteca Lesser Galliwasp
  Celestus rozellae Smith, 1942 -- valid -- Celesto vientre verde, Rozella's Lesser Galliwasp
  Celeus castaneus (Wagler, 1829) -- valid -- Carpintero castaño, Chestnut-colored Woodpecker
  Centrolenella fleischmanni (Boettger, 1893) -- invalid -- Rana vientre traslúcido
  Cepphus columba Pallas, 1811 -- valid -- Arao pichón, Pigeon Guillemot, Guillemot colombin, Arao colombino, airo-columbino
  Cercomacra tyrannina (P. L. Sclater, 1855) -- valid -- Hormiguero tirano, Dusky Antbird
  Cerorhinca monocerata (Pallas, 1811) -- valid -- Rhinoceros Auklet, Alca rinoceronte, Macareux rhinocéros, Alca unicórnea, mérgulo-unicórnio
  Cerrophidion barbouri (Dunn, 1919) -- invalid -- Nauyaca-de montaña guerrerense
  Cerrophidion godmani (Günther, 1863) -- valid -- Nauyaca-de montaña de Godman, Godman's Montane Pit Viper
  Cerrophidion tzotzilorum (Campbell, 1985) -- valid -- Nauyaca-de montaña tzotzil, Tzotzil Montane Pit Viper
  Certhia americana Bonaparte, 1838 -- valid -- Trepador americano, Brown Creeper, grimpereau brun
  Cervus elaphus Linnaeus, 1758 -- valid -- elk, wapiti, Ciervo común, wapiti or elk, wapiti, Red Deer (see comments)
  Ceryle alcyon (Linnaeus, 1758) -- invalid -- Martín-pescador norteño, Belted Kingfisher, martin-pêcheur d'Amérique
  Ceryle torquata (Linnaeus, 1766) -- invalid -- Ringed Kingfisher, Martín-pescador de collar
  Chaetodipus baileyi (Merriam, 1894) -- valid -- Bailey's Pocket Mouse, Ratón-de abazones Sonorense
  Chaetodipus californicus (Merriam, 1889) -- valid -- Ratón-de abazones de California, California Pocket Mouse
  Chaetodipus fallax (Merriam, 1889) -- valid -- Ratón-de abazones de San Diego, San Diego Pocket Mouse
  Chaetodipus formosus (Merriam, 1889) -- valid -- Ratón-de abazones cola larga, Long-tailed Pocket Mouse
  Chaetodipus hispidus (Baird, 1858) -- valid -- Hispid Pocket Mouse, Ratón-de abazones crespo
  Chaetodipus intermedius (Merriam, 1889) -- valid -- Ratón-de abazones de roca, Rock Pocket Mouse
  Chaetodipus nelsoni (Merriam, 1894) -- valid -- Nelson's Pocket Mouse, Ratón-de abazones de Nelson
  Chaetodipus penicillatus (Woodhouse, 1852) -- valid -- Ratón-de abazones desértico, Desert Pocket Mouse
  Chaetodipus spinatus (Merriam, 1889) -- valid -- Spiny Pocket Mouse, Ratón-de abazones de Baja California
  Chaetura pelagica (Linnaeus, 1758) -- valid -- Vencejo de chimenea, Chimney Swift, martinet ramoneur
  Chaetura vauxi (J. K. Townsend, 1839) -- valid -- Vaux's Swift, Vencejo de Vaux
  Chamaea fasciata (Gambel, 1845) -- valid -- Wrentit, Camea
  Charadrius collaris Vieillot, 1818 -- valid -- Chorlo de collar, Collared Plover, Pluvier d'Azara, Pluvier de d'Azara, Chorlitejo de Azara, batuíra-de-coleira
  Charadrius melodus Ord, 1824 -- valid -- Chorlo chiflador, Piping Plover, Pluvier siffleur, Chorlitejo silbador, batuíra-melodiosa
  Charadrius montanus J. K. Townsend, 1837 -- valid -- Mountain Plover, Chorlo llanero, Pluvier montagnard, Chorlito llanero, batuíra-montesa
  Charadrius semipalmatus Bonaparte, 1825 -- valid -- Chorlo semipalmeado, Semipalmated Plover, pluvier à semipalmé, Pluvier semipalmé, Chorlitejo semipalmeado, batuíra-de-bando
  Charadrius vociferus Linnaeus, 1758 -- valid -- Chorlo tildío, Killdeer, Pluvier kildir, Chorlitejo culirrojo, borrelho-de-coleira-dupla
  Charadrius wilsonia Ord, 1814 -- valid -- Chorlo pico grueso, Wilson's Plover, Pluvier de Wilson, Chorlitejo piquigrueso, batuíra-bicuda
  Chelonia mydas (Linnaeus, 1758) -- valid -- Green Sea Turtle, Tortuga-marina verde-del Atlántico, common green sea turtle
  Chelydra serpentina (Linnaeus, 1758) -- valid -- Snapping Turtle, chélydre serpentine, Tortuga-lagarto común, Common Snapping Turtle, North American Snapping Turtle
  Chen caerulescens (Linnaeus, 1758) -- invalid -- Blue Goose, Ganso blanco, Snow Goose, oie des neiges
  Chen rossii (Cassin, 1861) -- invalid -- Ross' Goose, Ganso de Ross, Ross's Goose, oie de Ross
  Chersodromus liebmanni Reinhardt, 1861 -- valid -- Culebra-corredora de Liebmann, Liebmann's Earth Runner
  Chersodromus rubriventris (Taylor, 1949) -- valid -- Culebra-corredora vientre rojo, Redbelly Earth Runner
  Chilomeniscus cinctus Cope, 1861 -- invalid -- Banded Sand Snake, Culebra-arenera bandada
  Chilomeniscus punctatissimus Van Denburgh and Slevin, 1921 -- invalid -- Culebra-arenera punteada
  Chilomeniscus savagei Cliff, 1954 -- valid -- Culebra-arenera de Cerralvo, Savage's Sand Snake
  Chilomeniscus stramineus Cope, 1860 -- valid -- Variable Sandsnake, Culebra-arenera manchada
  Chionactis occipitalis (Hallowell, 1854) -- valid -- Western Shovel-nosed Snake, Culebra-nariz de pala del oeste, Western Shovelnose Snake, Mojave Shovelnose Snake, Mohave Shovel-nosed Snake
  Chionactis palarostris (Klauber, 1937) -- valid -- Sonoran Shovel-nosed Snake, Culebra-nariz de pala sonorense, Sonoran Shovelnose Snake
  Chironectes minimus (Zimmermann, 1780) -- valid -- Tlacuache acuático, yapok, Water Opossum
  Chiropterotriton arboreus (Taylor, 1941) -- valid -- Salamandra-pie plano arbórea
  Chiropterotriton chiropterus (Cope, 1863) -- valid -- Salamandra-pie plano común
  Chiropterotriton chondrostega (Taylor, 1941) -- valid -- Salamandra-pie plano cartilaginosa
  Chiropterotriton dimidiatus (Taylor, 1940) -- valid -- Salamandra-pie plano enana
  Chiropterotriton lavae (Taylor, 1942) -- valid -- Salamandra-pie plano pigmea
  Chiropterotriton magnipes Rabb, 1965 -- valid -- Salamandra-pie plano patona
  Chiropterotriton mosaueri (Woodall, 1941) -- valid -- Salamandra-pie plano de caverna
  Chiropterotriton multidentatus (Taylor, 1939) -- valid -- Salamandra-pie plano multidentada
  Chiropterotriton priscus Rabb, 1956 -- valid -- Salamandra-pie plano primitiva
  Chiroxiphia linearis (Bonaparte, 1838) -- valid -- Long-tailed Manakin, Manaquín cola larga
  Chlidonias niger (Linnaeus, 1758) -- valid -- Charrán negro, Black Tern, Guifette noire, Fumarel común, trinta-réis-negro, gaivina-preta
  Chloroceryle aenea (Pallas, 1764) -- valid -- Martín-pescador enano, American Pygmy Kingfisher, martim-pescador-miúdo, Martín pescador enano, Martin-pêcheur nain, American Pygmy-kingfisher
  Chloroceryle amazona (Latham, 1790) -- valid -- Martín-pescador amazónico, Amazon Kingfisher, martim-pescador-verde, Martín pescador amazónico, Martin-pêcheur d'Amazonie
  Chloroceryle americana (J. F. Gmelin, 1788) -- valid -- martim-pescador-pequeno, Martín pescador verde, Martin-pêcheur vert, Green Kingfisher, Martín-pescador verde
  Chlorophanes spiza (Linnaeus, 1758) -- valid -- Mielero verde, Green Honeycreeper, Tangara émeraude, Mielerito verde, saí-verde
  Chlorophonia occipitalis (Du Bus de Gisignies, 1847) -- valid -- Clorofonia corona azul, Blue-crowned Chlorophonia
  Chlorospingus ophthalmicus (Du Bus de Gisignies, 1847) -- invalid -- Chinchinero común, Common Bush-Tanager, Common Bush Tanager
  Chlorostilbon auriceps (Gould, 1852) -- invalid -- Esmeralda mexicana, Golden-crowned Emerald
  Chlorostilbon canivetii (R. Lesson, 1832) -- invalid -- Esmeralda tijereta, Canivet's Emerald
  Chlorostilbon forficatus Ridgway, 1885 -- invalid -- Esmeralda de Cozumel, Cozumel Emerald
  Choeronycteris mexicana Tschudi, 1844 -- valid -- Murciélago trompudo, Mexican Long-tongued Bat
  Chondestes grammacus (Say, 1822) -- valid -- Chingolo arlequín, escrevedeira-arlequim, Lark Sparrow, bruant à joues marron, Gorrión arlequín
  Chondrohierax uncinatus (Temminck, 1822) -- valid -- Hook-billed Kite, Gavilán pico gancho, Milan bec-en-croc
  Chordeiles acutipennis (Hermann, 1783) -- valid -- Chotacabras menor, Lesser Nighthawk
  Chordeiles minor (J. R. Forster, 1771) -- valid -- Chotacabras zumbón, engoulevent d'Amérique, Common Nighthawk
  Chrysemys picta (Schneider, 1783) -- valid -- Painted Turtle, Tortuga pintada, tortue peinte, Eastern Painted Turtle
  Ciccaba nigrolineata P. L. Sclater, 1859 -- invalid -- Búho blanquinegro, Black-and-white Owl
  Ciccaba virgata (Cassin, 1849) -- invalid -- Búho café
  Cinclus mexicanus Swainson, 1827 -- valid -- American Dipper, Mirlo-acuático norteamericano
  Circus cyaneus (Linnaeus, 1766) -- valid -- Gavilán rastrero, Northern Harrier, Busard Saint-Martin
  Cistothorus palustris (A. Wilson, 1810) -- valid -- Chivirín pantanero, Marsh Wren, troglodyte des marais
  Cistothorus platensis (Latham, 1790) -- valid -- Chivirín sabanero, Sedge Wren, troglodyte à bec court
  Clangula hyemalis (Linnaeus, 1758) -- valid -- Long-tailed Duck, Pato cola larga, Harelde kakawi, Pato havelda, pato-rabilongo
  Claravis mondetoura (Bonaparte, 1856) -- valid -- Tórtola pecho morado, Maroon-chested Ground Dove, Maroon-chested Ground-Dove
  Claravis pretiosa (Ferrari-Pérez, 1886) -- valid -- Tórtola azul, Blue Ground Dove, Blue Ground-Dove
  Claudius angustatus Cope, 1865 -- valid -- Tortuga-almizclera chopontil, Narrow-bridged Musk Turtle
  Clelia clelia (Daudin, 1803) -- valid -- Culebra-viborera común
  Clelia scytalina (Cope, 1867) -- valid -- Culebra-viborera mexicana, Mexican Snake Eater
  Clemmys marmorata (Baird and Girard, 1852) -- invalid -- western pond turtle, Tortuga marmoleada, Pacific pond turtle
  Cnemidophorus alpinus Maslin and Walker, 1965 -- invalid -- Huico alpino, Alpine Whiptail, Corredora Alpina
  Cnemidophorus angusticeps Cope, 1878 -- invalid -- Huico yucateco
  Cnemidophorus bacatus Van Denburgh and Slevin, 1921 -- invalid -- Huico de Nolasco, Huico de San Pedro Nolasco, San Pedro Nolasco Whiptail
  Cnemidophorus burti Taylor, 1938 -- invalid -- Huico de cañón o punteado de cañón, Canyon Spotted Whiptail
  Cnemidophorus calidipes Duellman, 1955 -- invalid -- Huico de Tepalcatepec
  Cnemidophorus canus Van Denburgh and Slevin, 1921 -- invalid -- Huico de Salsipuedes, Isla Salsipuedas Whiptail, Huico de la Isla Salsipuedes
  Cnemidophorus catalinensis Van Denburgh and Slevin, 1921 -- invalid -- Huico de Santa Catalina
  Cnemidophorus celeripes Dickerson, 1919 -- invalid -- Huico de San José
  Cnemidophorus ceralbensis (Van Denburgh and Slevin, 1921) -- invalid -- Huico de Cerralbo
  Cnemidophorus communis Cope, 1878 -- invalid -- Huico Moteado-gigante
  Cnemidophorus costatus Cope, 1878 -- invalid -- Huico del Oeste-mexicano
  Cnemidophorus cozumela Gadow, 1906 -- invalid -- Huico de Cozumel
  Cnemidophorus deppii Wiegmann, 1834 -- invalid -- Huico siete líneas
  Cnemidophorus estebanensis Dickerson, 1919 -- invalid -- Huico de San Esteban
  Cnemidophorus exsanguis Lowe, 1956 -- invalid -- Huico chihuahuense, Chihuahuan Spotted Whiptail
  Cnemidophorus gularis Baird and Girard, 1852 -- invalid -- Texas Spotted Whiptail, Huico Texano
  Cnemidophorus guttatus Wiegmann, 1834 -- invalid -- Huico picuiliche
  Cnemidophorus hyperythrus Cope, 1863 -- invalid -- Orange-throated Whiptail, Huico Garganta Anaranjada
  Cnemidophorus inornatus Baird, 1859 -- invalid -- Little Striped Whiptail, Huico adornado
  Cnemidophorus labialis Stejneger, 1890 -- invalid -- Huico de Baja California
  Cnemidophorus laredoensis McKinney, Kay and Anderson, 1973 -- invalid -- Laredo Striped Whiptail, Huico de Laredo
  Cnemidophorus lineattissimus Cope, 1878 -- invalid -- Huico muchas líneas
  Cnemidophorus martyris Stejneger, 1891 -- invalid -- Huico de San Pedro Mártir
  Cnemidophorus maximus Cope, 1863 -- invalid -- Huico del Cabo
  Cnemidophorus mexicanus Peters, 1869 -- invalid -- Huico mexicano
  Cnemidophorus motaguae Sackett, 1941 -- invalid -- Giant Whiptail, Huico gigante
  Cnemidophorus neomexicanus Lowe and Zweifel, 1952 -- invalid -- New Mexican Whiptail, New Mexico Whiptail, Huico de Nuevo México
  Cnemidophorus opatae Wright, 1967 -- invalid -- Huico opata
  Cnemidophorus parvisocius Zweifel, 1960 -- invalid -- Huico pigmeo
  Cnemidophorus rodecki McCoy and Maslin, 1962 -- invalid -- Huico de Rodeck
  Cnemidophorus sonorae Lowe and Wright, 1964 -- invalid -- Sonoran Spotted Whiptail, Huico de Sonora
  Cnemidophorus tesselatus (Say in James, 1823) -- invalid -- Checkered Whiptail, Colorado Checkered Whiptail, Common Checkered Whiptail, Huico de cuadros
  Cnemidophorus tigris Baird and Girard, 1852 -- invalid -- Western Whiptail, Huico occidental
  Cnemidophorus uniparens Wright and Lowe, 1965 -- invalid -- Desert Grassland Whiptail, Huico de pastizal-desértico
  Coccothraustes vespertinus (W. Cooper, 1825) -- invalid -- Evening Grosbeak, gros-bec errant, Picogrueso norteño
  Coccyzus americanus (Linnaeus, 1758) -- valid -- Cuclillo pico amarillo, Yellow-billed Cuckoo, coulicou à bec jaune
  Coccyzus erythropthalmus (A. Wilson, 1811) -- valid -- Cuclillo pico negro, Black-billed Cuckoo, coulicou à bec noir
  Coccyzus minor (Gmelin, 1788) -- valid -- Cuclillo manglero, Mangrove Cuckoo
  Cochlearius cochlearius (Linnaeus, 1766) -- valid -- Garza cucharón, Boat-billed Heron, Savacou huppé
  Coereba flaveola (Linnaeus, 1758) -- valid -- Sucrier à ventre jaune, Platanero, cambacica, Bananaquit, Reinita-mielera
  Colaptes auratus (Linnaeus, 1758) -- valid -- Carpintero de pechera, Northern Flicker, pic flamboyant
  Coleonyx brevis Stejneger, 1893 -- valid -- Texas Banded Gecko, Cuija texana
  Coleonyx elegans Gray, 1845 -- valid -- Cuija yucateca
  Coleonyx fasciatus (Boulenger, 1885) -- valid -- Cuija negra
  Coleonyx reticulatus Davis and Dixon, 1958 -- valid -- Reticulated Gecko, Reticulate Banded Gecko, Cuija reticulada, Big Bend gecko
  Coleonyx switaki (Murphy, 1974) -- valid -- Barefoot Gecko, Cuija descalza, Switak's Banded Gecko
  Coleonyx variegatus (Baird, 1859) -- valid -- Western Banded Gecko, Cuija occidental
  Colibri thalassinus (Swainson, 1827) -- valid -- Colibrí oreja violeta, Green Violet-ear, Green Violetear, Mexican Violetear
  Colinus nigrogularis (Gould, 1843) -- valid -- Colin à gorge noire, Colín gorjinegro, uru-de-papo-preto, Codorniz yucateca, Black-throated Bobwhite, Yucatan Bobwhite
  Colinus virginianus (Linnaeus, 1758) -- valid -- Colín de Virginia, codorniz-da-virgínia, Codorniz cotuí, Northern Bobwhite, colin de Virginie
  Coluber constrictor Linnaeus, 1758 -- valid -- Racer, Culebra-corredora constrictor, Eastern Racer, North American Racer
  Columba cayennensis Bonnaterre, 1792 -- invalid -- Paloma colorada
  Columba fasciata Say, 1822 -- invalid -- Band-tailed Pigeon, Paloma de collar
  Columba flavirostris Wagler, 1831 -- invalid -- Red-billed Pigeon, Paloma morada
  Columba leucocephala Linnaeus, 1758 -- invalid -- White-crowned Pigeon, Paloma corona blanca
  Columba livia J. F. Gmelin, 1789 -- valid -- Paloma doméstica, Rock Dove, pigeon biset, Common Pigeon, Rock Pigeon
  Columba nigrirostris P. L. Sclater, 1860 -- invalid -- Paloma triste
  Columba speciosa J. F. Gmelin, 1789 -- invalid -- Paloma escamosa
  Columbina inca (R. Lesson, 1847) -- valid -- Inca Dove, Tórtola cola larga
  Columbina minuta (Linnaeus, 1766) -- valid -- Tórtola pecho liso, Plain-breasted Ground-Dove, Plain-breasted Ground Dove
  Columbina passerina (Linnaeus, 1758) -- valid -- Common Ground-Dove, Tórtola coquita, Common Ground Dove
  Columbina talpacoti (Temminck, 1810) -- valid -- Ruddy Ground-Dove, Tórtola rojiza, Ruddy Ground Dove
  Conepatus leuconotus (Lichtenstein, 1832) -- valid -- American Hog-nosed Skunk, eastern hog-nosed skunk, Zorrillo-narigón occidental, white-backed hog-nosed skunk, badger skunk, rooter skunk, Texas skunk
  Conepatus mesoleucus (Lichtenstein, 1832) -- invalid -- western hog-nosed skunk, hog-nosed skunk, Zorrillo-narigón norteño
  Coniophanes alvarezi Campbell, 1989 -- valid -- Culebra sin rayas-chiapaneca, Chiapan Stripeless Snake
  Coniophanes bipunctatus (Günther, 1858) -- valid -- Culebra dos puntos, Two-spotted Snake
  Coniophanes fissidens (Günther, 1858) -- valid -- Culebra vientre amarillo, Yellowbelly Snake
  Coniophanes imperialis (Kennicott in Baird, 1859) -- valid -- Regal Black-striped Snake, Culebra rayas negras, Black-striped Snake
  Coniophanes lateritius Cope, 1862 -- valid -- Culebra sin rayas, Stripeless Snake
  Coniophanes meridanus Schmidt and Andrews, 1936 -- valid -- Culebra sin rayas-peninsular, Peninsula Stripeless Snake
  Coniophanes piceivittis Cope, 1869 -- valid -- Culebra rayada-de Cope, Cope's Black-striped Snake
  Coniophanes quinquevittatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Culebra rayada-escofinada, Fife-striped Snake
  Conophis lineatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Culebra-guardacaminos lineada, Road Guarder
  Conophis pulcher Cope, 1869 -- invalid -- Culebra-guardacaminos hermosa
  Conophis vittatus Peters, 1860 -- valid -- Culebra-guardacaminos rayada, Striped Road Guarder
  Conopsis biserialis (Taylor and H. M. Smith, 1942) -- valid -- Culebra-terrestre dos líneas, Two-lined Mexican Earth Snake
  Conopsis nasus Günther, 1858 -- valid -- Culebra-terrestre narigona, Largenose Earth Snake
  Contopus borealis (Swainson, 1832) -- invalid -- Olive-sided Flycatcher, Pibí boreal
  Contopus cinereus (Spix, 1825) -- valid -- Tropical Pewee, Pibí tropical
  Contopus pertinax Cabanis & Heine, 1859 -- valid -- Greater Pewee, Pibí tengofrío
  Contopus sordidulus P. L. Sclater, 1859 -- valid -- Western Wood-Pewee, Pibí occidental, Western Wood Pewee
  Contopus virens (Linnaeus, 1766) -- valid -- Pibí oriental, Eastern Wood-Pewee, pioui de l'est, Eastern Wood Pewee
  Cophosaurus texanus Troschel, 1852 -- valid -- Greater Earless Lizard, Lagartija-sorda mayor, Texas Greater Earless Lizard
  Coragyps atratus (Bechstein, 1793) -- valid -- Black Vulture, Zopilote común, Urubu noir
  Corvus brachyrhynchos C. L. Brehm, 1822 -- valid -- Cuervo americano, American Crow, corneille d'Amérique
  Corvus corax Linnaeus, 1758 -- valid -- Cuervo común, Common Raven, grand corbeau, Northern Raven
  Corvus cryptoleucus Couch, 1854 -- valid -- Chihuahuan Raven, Cuervo llanero
  Corvus imparatus J. L. Peters, 1929 -- valid -- Mexican Crow, Cuervo tamaulipeco, Tamaulipas Crow
  Corvus sinaloae L. I. Davis, 1958 -- valid -- Cuervo sinaloense, Sinaloa Crow
  Corytophanes cristatus (Merrem, 1821) -- valid -- Turipache cabeza lisa, Smooth Helmeted Iguana
  Corytophanes percarinatus A. H. A. Duméril, 1856 -- valid -- Turipache aquillado, Keeled Helmeted Iguana, Keeled Helmeted Basilisk
  Cotinga amabilis Gould, 1857 -- valid -- Lovely Cotinga, Cotinga azuleja
  Coturnicops noveboracensis (Gmelin, 1789) -- valid -- Polluela amarilla, Yellow Rail, râle jaune
  Crax rubra Linnaeus, 1758 -- valid -- Grand Hocco, Pavón norteño, mutum-grande, Great Curassow, Hocofaisán
  Crocodylus acutus Cuvier, 1807 -- valid -- American Crocodile, Cocodrilo americano, caiman de la costa, Central American Alligator, cocodrilo, lagarto
  Crocodylus moreletii Duméril and Bibron, 1851 -- valid -- Morelet's Crocodile, Cocodrilo de Moreleti, Belize Crocodile, Central American Crocodile
  Crotalus atrox Baird and Girard, 1853 -- valid -- Western Diamondback Rattlesnake, Western Diamond-backed Rattlesnake, Víbora-cascabel de diamantes
  Crotalus basiliscus (Cope, 1864) -- valid -- Víbora-cascabel de Saye
  Crotalus catalinensis Cliff, 1954 -- valid -- Víbora-cascabel muda
  Crotalus cerastes Hallowell, 1854 -- valid -- Sidewinder, Víbora-cascabel cornuda
  Crotalus durissus Linnaeus, 1758 -- valid -- South American Rattlesnake, Víbora-cascabel tropical, Cascabel Rattlesnake, Central American Rattlesnake
  Crotalus enyo (Cope, 1861) -- valid -- Víbora-cascabel bajacaliforniana, Baja California Rattlesnake, Lower California Rattlesnake
  Crotalus intermedius Troschel, 1865 -- valid -- Víbora-cascabel enana, Mexican Smallhead Rattlesnake
  Crotalus lannomi Tanner, 1966 -- valid -- Víbora-cascabel de Autlán, Autlán Long-tailed Rattlesnake, Manantlán Long-tailed Rattlesnake
  Crotalus lepidus (Kennicott, 1861) -- valid -- Rock Rattlesnake, Víbora-cascabel variable
  Crotalus molossus Baird and Girard, 1853 -- valid -- Black-tailed Rattlesnake, Víbora-cascabel cola negra, Western Black-tailed Rattlesnake
  Crotalus polystictus (Cope, 1865) -- valid -- Víbora-cascabel ocelada, Mexican Lancehead Rattlesnake
  Crotalus pricei Van Denburgh, 1895 -- valid -- Twin-spotted Rattlesnake, Víbora-cascabel motas gemelas
  Crotalus pusillus Klauber, 1952 -- valid -- Víbora-cascabel de Tancítaro, Tancitaran Dusky Rattlesnake
  Crotalus ruber Cope, 1892 -- valid -- Red Diamond Rattlesnake, Víbora-cascabel colorada
  Crotalus scutulatus (Kennicott, 1861) -- valid -- Mojave Rattlesnake, Mohave Rattlesnake, Víbora-cascabel del Altiplano, Green Rattlesnake
  Crotalus stejnegeri Dunn, 1919 -- valid -- Víbora-cascabel cola larga, Sinaloan Long-tailed Rattlesnake
  Crotalus tortugensis Van Denburgh and Slevin, 1921 -- invalid -- Víbora-cascabel de Isla Tortuga, Tortuga Island Rattlesnake
  Crotalus transversus Taylor, 1944 -- valid -- Víbora-cascabel bandas cruzadas, Cross-banded Mountain Rattlesnake
  Crotalus triseriatus (Wagler, 1830) -- valid -- Víbora-cascabel transvolcánica, Western Dusky Rattlesnake, Central Plateau Dusky Rattlesnake
  Crotalus viridis (Rafinesque, 1818) -- valid -- Western Rattlesnake, Prairie Rattlesnake, Víbora-cascabel occidental
  Crotalus willardi Meek, 1905 -- valid -- Ridge-nosed Rattlesnake, Víbora-cascabel bigotuda
  Crotaphytus collaris (Say in James, 1823) -- valid -- Collared Lizard, Eastern Collared Lizard, Lagartija-de collar común
  Crotaphytus insularis Van Denburgh and Slevin, 1921 -- valid -- Black-collared Lizard, Desert Collared Lizard, Lagartija-de collar negra, Eastern Collared Lizard
  Crotaphytus reticulatus Baird, 1859 -- valid -- Reticulate Collared Lizard, Lagartija-de collar reticulada
  Crotophaga ani Linnaeus, 1758 -- valid -- Smooth-billed Ani, Garrapatero pico liso
  Crotophaga major Gmelin, 1788 -- valid -- Garrapatero mayor, Greater Ani
  Crotophaga sulcirostris Swainson, 1827 -- valid -- Groove-billed Ani, Garrapatero pijuy
  Cryophis hallbergi Bogert and Duellman, 1963 -- valid -- Culebra-de nebklina de Hallberg, Hallberg's Cloud Forest Snake
  Cryptotis parva (Say, 1823) -- valid -- bee shrew, little short-tailed shrew, small short-tailed shrew, Least Shrew, Musaraña-orejillas mínima, North American Least Shrew
  Crypturellus boucardi (P. L. Sclater, 1860) -- valid -- Slaty-breasted Tinamou, Tinamú jamuey
  Crypturellus cinnamomeus (Lesson, 1842) -- valid -- Thicket Tinamou, Tinamú canelo
  Crypturellus soui (Hermann, 1783) -- valid -- Little Tinamou, Tinamú menor
  Ctenosaura acanthura (Shaw, 1802) -- valid -- Iguana-espinosa del Golfo, Northeastern Spinytail Iguana, Veracruz Spiny-tailed Iguana
  Ctenosaura hemilopha (Cope, 1863) -- valid -- Iguana-espinosa de Sonora, Short-crested Spiny-tailed Iguana, Baja California Spiny-tailed Iguana, Cape Spinytail Iguana
  Ctenosaura pectinata (Wiegmann, 1834) -- valid -- Mexican Spiny-tailed Iguana, Iguana-espinosa mexicana, Spiny-tailed Iguana, Western Spiny-tailed Iguana, Guerreran Spiny-tailed Iguana
  Ctenosaura similis (Gray, 1831) -- valid -- Black Spiny-tailed Iguana, Iguana-espinosa rayada, Common Spiny-tailed Iguana, Black Iguana
  Cyanerpes cyaneus (Linnaeus, 1766) -- valid -- Mielero pata roja, Red-legged Honeycreeper, Guit-guit saï, Mielerito patirrojo, saíra-beija-flor
  Cyanerpes lucidus (P. L. Sclater & Salvin, 1859) -- valid -- Mielero brillante, Shining Honeycreeper, Guit-guit brillant, Mielerito reluciente
  Cyanocitta cristata (Linnaeus, 1758) -- valid -- Blue Jay, geai bleu, Chara azul
  Cyanocitta stelleri (Gmelin, 1788) -- valid -- Chara crestada, Steller's Jay, geai de Steller
  Cyanocompsa cyanoides (Lafresnaye, 1847) -- valid -- Picogordo negro, Blue-black Grosbeak
  Cyanocompsa parellina (Bonaparte, 1850) -- valid -- Blue Bunting, Colorín azulnegro
  Cyanocorax beecheii (Vigors, 1829) -- valid -- Chara de Beechy, Purplish-backed Jay
  Cyanocorax dickeyi R. T. Moore, 1935 -- valid -- Chara pinta, Tufted Jay
  Cyanocorax morio (Wagler, 1829) -- invalid -- Brown Jay, Chara papán
  Cyanocorax sanblasianus (Lafresnaye, 1842) -- valid -- Chara de San Blas, San Blas Jay
  Cyanocorax yncas (Boddaert, 1783) -- valid -- Green Jay, Chara verde, Inca Jay
  Cyanocorax yucatanicus (Dubois, 1875) -- valid -- Chara yucateca, Yucatan Jay
  Cyanolyca cucullata (Ridgway, 1885) -- valid -- Chara gorro azul, Azure-hooded Jay
  Cyanolyca mirabilis Nelson, 1903 -- valid -- Chara garganta blanca, White-throated Jay
  Cyanolyca nana (Du Bus de Gisignies, 1847) -- invalid -- Chara enana, Dwarf Jay
  Cyanolyca pumilo (Strickland, 1849) -- valid -- Chara de niebla, Black-throated Jay
  Cyclarhis gujanensis (Gmelin, 1789) -- valid -- Vireón ceja rufa, Rufous-browed Peppershrike
  Cygnus buccinator Richardson, 1831 -- valid -- Cisne trompetero, Trumpeter Swan, Cygne trompette, cisne-trompeteiro
  Cygnus columbianus (Ord, 1815) -- valid -- Cisne de tundra, Tundra Swan, Cygne siffleur, Cisne chico, cisne-pequeno
  Cynanthus latirostris Swainson, 1827 -- valid -- Broad-billed Hummingbird, Colibrí pico ancho
  Cynanthus sordidus (Gould, 1859) -- invalid -- Colibrí oscuro, Dusky Hummingbird
  Cynomys ludovicianus (Ord, 1815) -- valid -- Arizona black-tailed prairie dog, Perro-llanero cola negra, Black-tailed Prairie Dog
  Cypseloides niger (J. F. Gmelin, 1789) -- valid -- Black Swift, Vencejo negro, American Black Swift
  Cypseloides storeri Navarro, Peterson, Escalante & Benitez, 1992 -- valid -- White-fronted Swift, Vencejo frente blanca
  Cyrtonyx montezumae (Vigors, 1830) -- valid -- Colin arlequin, Colín de Moctezuma, colim-de-montezuma, Montezuma Quail, Codorniz Moctezuma
  Cyrtonyx ocellatus (Gould, 1837) -- valid -- Colin ocellé, Colín ocelado, colim-ocelado, Ocellated Quail, Codorniz ocelada
  Dactylortyx thoracicus (Gambel, 1848) -- valid -- Colin chanteur, Colín cantor, colim-cantor, Singing Quail, Codorniz silbadora
  Daptrius americanus (Boddaert, 1783) -- invalid -- Caracara comecacao
  Dasyprocta mexicana Saussure, 1860 -- valid -- Mexican Agouti, Guaqueque mexicano
  Dasyprocta punctata Gray, 1842 -- valid -- Central American Agouti, Guaqueque centroamericano
  Dasypus novemcinctus Linnaeus, 1758 -- valid -- long-nosed armadillo, Armadillo nueve bandas, Nine-banded Armadillo
  Delphinus delphis Linnaeus, 1758 -- valid -- saddle-backed dolphin, common dolphin, Short-beaked Common Dolphin, short-beaked saddle-backed dolphin, Short-beaked Saddleback Dolphin, Delfín común
  Deltarhynchus flammulatus (Lawrence, 1875) -- valid -- Flammulated Flycatcher, Papamoscas jaspeado
  Dendrocincla anabatina P. L. Sclater, 1859 -- valid -- Tawny-winged Woodcreeper, Trepatroncos sepia
  Dendrocincla homochroa (P. L. Sclater, 1860) -- valid -- Ruddy Woodcreeper, Trepatroncos rojizo
  Dendrocolaptes certhia (Boddaert, 1783) -- valid -- Trepatroncos barrado, Amazonian Barred Woodcreeper
  Dendrocolaptes picumnus Lichtenstein, 1820 -- valid -- Black-banded Woodcreeper, Trepatroncos vientre barrado
  Dendrocygna autumnalis (Linnaeus, 1758) -- valid -- Black-bellied Whistling Duck, Pijije ala blanca, Black-bellied Whistling-Duck, Dendrocygne à ventre noir, Suirirí piquirrojo, marreca-cabocla
  Dendrocygna bicolor (Vieillot, 1816) -- valid -- Fulvous Whistling Duck, Pijije canelo, Fulvous Whistling-Duck, Dendrocygne fauve, Suirirí bicolor, marreca-caneleira
  Dendroica caerulescens (J. F. Gmelin, 1789) -- invalid -- Chipe azulnegro, Black-throated Blue Warbler, paruline bleue
  Dendroica castanea (A. Wilson, 1810) -- invalid -- Chipe castaño, Bay-breasted Warbler, paruline à poitrine baie
  Dendroica cerulea (A. Wilson, 1810) -- invalid -- Chipe cerúleo, Cerulean Warbler, paruline azurée
  Dendroica chrysoparia P. L. Sclater & Salvin, 1860 -- invalid -- Golden-cheeked Warbler, Golden-cheeked Wood Warbler, Chipe mejilla dorada
  Dendroica coronata (Linnaeus, 1766) -- invalid -- Chipe coronado, Yellow-rumped Warbler, paruline à croupion jaune
  Dendroica discolor (Vieillot, 1809) -- invalid -- Chipe de pradera, Prairie Warbler, paruline des prés
  Dendroica dominica (Linnaeus, 1766) -- invalid -- Chipe garganta amarilla, Yellow-throated Warbler, paruline à gorge jaune
  Dendroica fusca (Statius Müller, 1776) -- invalid -- Chipe garganta naranja, Blackburnian Warbler, paruline à gorge orangée
  Dendroica graciae S. F. Baird, 1865 -- invalid -- Grace's Warbler, Chipe ceja amarilla
  Dendroica magnolia (A. Wilson, 1811) -- invalid -- Chipe de magnolia, Magnolia Warbler, paruline à tête cendrée
  Dendroica nigrescens (J. K. Townsend, 1837) -- invalid -- Chipe negrogris, Black-throated Gray Warbler, paruline grise, Black-throated Grey Warbler
  Dendroica occidentalis (J. K. Townsend, 1837) -- invalid -- Chipe cabeza amarilla, Hermit Warbler, paruline à tête jaune
  Dendroica palmarum (J. F. Gmelin, 1789) -- invalid -- Chipe playero, paruline à couronne rousse, Palm Warbler
  Dendroica pensylvanica (Linnaeus, 1766) -- invalid -- Chipe flanco castaño, Chestnut-sided Warbler, paruline à flancs marron
  Dendroica petechia (Linnaeus, 1766) -- invalid -- Chipe amarillo, Yellow Warbler, paruline jaune, American Yellow Warbler
  Dendroica pinus (Linnaeus, 1766) -- invalid -- Chipe pinero, Pine Warbler, paruline des pins
  Dendroica striata (J. R. Forster, 1772) -- invalid -- Chipe gorra negra, Blackpoll Warbler, paruline rayée
  Dendroica tigrina (J. F. Gmelin, 1789) -- invalid -- Chipe atigrado, Cape May Warbler, paruline tigrée
  Dendroica townsendi (J. K. Townsend, 1837) -- invalid -- Townsend's Warbler, Chipe negroamarillo
  Dendroica virens (J. F. Gmelin, 1789) -- invalid -- Chipe dorso verde, Black-throated Green Warbler, paruline à gorge noire
  Dendrophidion vinitor H. M. Smith, 1941 -- valid -- Culebra-corredora barrada, Barred Forest Racer
  Dendrortyx barbatus Gould, 1846 -- valid -- Colin barbu, Colín barbudo, colim-barbudo, Bearded Wood Partridge, Codorniz-coluda veracruzana, Bearded Wood-Partridge
  Dendrortyx leucophrys (Gould, 1844) -- valid -- Colin à sourcils blancs, Colín cariclaro, colim-de-sobrancelhas-brancas, Buffy-crowned Wood Partridge, Codorniz-coluda centroamericana, Buffy-crowned Wood-Partridge
  Dendrortyx macroura (Jardine & Selby, 1828) -- valid -- Colin à longue queue, Colín rabudo, colim-de-rabo-longo, Long-tailed Wood Partridge, Codorniz-coluda neovolcánica, Long-tailed Wood-Partridge
  Dendrotriton megarhinus (Rabb, 1960) -- valid -- Salamandra-de bromelia narigona
  Dendrotriton xolocalcae (Taylor, 1941) -- valid -- Salamandra-de bromelia de Xolocalca
  Dermatemys mawii Gray, 1847 -- valid -- Tortuga-riverina centroamericana, Central American River Turtle
  Dermochelys coriacea (Vandelli, 1761) -- valid -- leatherback turtle, Leatherback, Tortuga-marina laúd, tinglar, tortue luth, Leatherback Sea Turtle
  Dermophis mexicanus (Duméril and Bibron, 1841) -- valid -- Cecilia mexicana
  Dermophis oaxacae (Mertens, 1930) -- valid -- Cecilia oaxaqueña
  Diadophis punctatus (Linnaeus, 1766) -- valid -- Ring-necked Snake, Culebra de collar, Ringneck Snake, couleuvre à collier
  Didelphis marsupialis Linnaeus, 1758 -- valid -- Tlacuache sureño, Common Opossum
  Didelphis virginiana Kerr, 1792 -- valid -- Tlacuache norteño, opossum d'Amérique, Virginia Opossum
  Diglossa baritula Wagler, 1832 -- valid -- Picaflor canelo, Cinnamon-bellied Flowerpiercer, Percefleur cannelle, Pinchaflor ventricanelo
  Diomedea albatrus Pallas, 1769 -- invalid -- Short-tailed Albatross, Albatros rabón
  Diomedea immutabilis Rothschild, 1893 -- invalid -- Laysan Albatross, Albatros de Laysan
  Diomedea nigripes Audubon, 1839 -- invalid -- Black-footed Albatross, Albatros pata negra
  Diphylla ecaudata Spix, 1823 -- valid -- Vampiro pata peluda, Hairy-legged Vampire Bat
  Dipodomys agilis Gambel, 1848 -- valid -- Rata-canguro ágil, Agile Kangaroo Rat
  Dipodomys compactus True, 1889 -- valid -- Rata-canguro de Del Padre, Gulf Coast Kangaroo Rat
  Dipodomys deserti Stephens, 1887 -- valid -- Rata-canguro desértica, Desert Kangaroo Rat
  Dipodomys merriami Mearns, 1890 -- valid -- Rata-canguro de Merriam, Merriam's Kangaroo Rat
  Dipodomys ordii Woodhouse, 1853 -- valid -- Rata-canguro común, Ord's Kangaroo Rat
  Dipodomys spectabilis Merriam, 1890 -- valid -- Rata-canguro cola de bandera, Banner-tailed Kangaroo Rat
  Dipsas brevifacies (Cope, 1866) -- valid -- Culebra-caracolera chata, Snail-eating Thirst Snake
  Dipsas gaigeae (Oliver, 1937) -- valid -- Culebra-caracolera de Gaige, Gaige's Thirst Snail-eater
  Dipsosaurus dorsalis (Baird and Girard, 1852) -- valid -- Desert Iguana, Iguana de desierto, Common Desert Iguana
  Dives dives (Deppe, 1830) -- valid -- Tordo cantor, Melodious Blackbird
  Dolichonyx oryzivorus (Linnaeus, 1758) -- valid -- Bobolink, goglu des prés, Tordo arrocero
  Doricha eliza (R. Lesson & Delattre, 1839) -- valid -- Colibrí cola hendida, Mexican Sheartail
  Doricha enicura (Vieillot, 1818) -- valid -- Colibrí tijereta, Slender Sheartail
  Dromococcyx phasianellus (Spix, 1824) -- valid -- Cuclillo faisán, Pheasant Cuckoo
  Dryadophis cliftoni Hardy, 1964 -- invalid -- Culebra-lagartijera de Clifton
  Dryadophis melanolomus (Cope, 1868) -- invalid -- Culebra-lagartijera común
  Drymobius chloroticus (Cope, 1886) -- valid -- Culebra-corredora verdosa, Green Highland Racer
  Drymobius margaritiferus (Schlegel, 1837) -- valid -- Central American Speckled Racer, Culebra-corredora de Petatillos, Speckled Racer
  Dryocopus lineatus (Linnaeus, 1766) -- valid -- Carpintero lineado, Lineated Woodpecker
  Duellmanohyla chamulae (Duellman, 1961) -- valid -- Rana-arroyera chamula
  Duellmanohyla ignicolor (Duellman, 1961) -- valid -- Rana-arroyera de Sierra de Juárez
  Duellmanohyla schmidtorum (Stuart, 1954) -- valid -- Rana-arroyera de Schmidt
  Dumetella carolinensis (Linnaeus, 1766) -- valid -- Maullador gris, Gray Catbird, moqueur chat, Grey Catbird
  Dysithamnus mentalis (Temminck, 1823) -- valid -- Hormiguero sencillo, Plain Antvireo
  Egretta caerulea (Linnaeus, 1758) -- valid -- Garceta azul, Little Blue Heron, aigrette bleu, Aigrette bleue
  Egretta rufescens (Gmelin, 1789) -- valid -- Reddish Egret, Garceta rojiza, Aigrette roussâtre
  Egretta thula (Molina, 1782) -- valid -- Garceta pie-dorado, Snowy Egret, Aigrette neigeuse
  Egretta tricolor (Statius Muller, 1776) -- valid -- Garceta tricolor, Tricolored Heron, Aigrette tricolore
  Elaenia flavogaster (Thunberg, 1822) -- valid -- Yellow-bellied Elaenia, Elenia vientre amarillo
  Elaenia martinica (Linnaeus, 1766) -- valid -- Caribbean Elaenia, Elenia caribeña
  Elanoides forficatus (Linnaeus, 1758) -- valid -- American Swallow-tailed Kite, Milano tijereta, Swallow-tailed Kite, Milan à queue fourchue
  Elanus leucurus (Vieillot, 1818) -- valid -- Milano cola blanca, White-tailed Kite, Élanion à queue blanche
  Elaphe bairdi (Yarrow, 1880) -- invalid -- Baird's Rat Snake, Baird's Ratsnake, Culebra-ratonera de Baird
  Elaphe flavirufa (Cope, 1867) -- invalid -- Culebra-ratonera tropical
  Elaphe guttata (Linnaeus, 1766) -- invalid -- Corn Snake, Cornsnake, Culebra-ratonera de maiz
  Elaphe phaescens Dowling, 1952 -- invalid -- Culebra-ratonera yucateca
  Electron carinatum (Du Bus de Gisignies, 1847) -- valid -- Momoto pico quilla, Keel-billed Motmot, Momoto carenado, Motmot à bec caréné
  Eleutherodactylus alfredi (Boulenger, 1898) -- invalid -- Rana-ladrona de Alfred
  Eleutherodactylus angustidigitorum (Taylor, 1940) -- valid -- Rana-fisgona de Pátzcuaro
  Eleutherodactylus augusti (Dugès in Brocchi, 1879) -- invalid -- Barking Frog, Rana-ladradora común
  Eleutherodactylus batrachylus Taylor, 1940 -- invalid -- Rana-ladrona tamaulipeca
  Eleutherodactylus brocchi (Boulenger in Brocchi, 1882) -- invalid -- Rana-ladrona de Brocch
  Eleutherodactylus cystignathoides (Cope, 1877) -- valid -- Rana-chirriadora mexicana, Rio Grande Chirping Frog
  Eleutherodactylus decoratus Taylor, 1942 -- invalid -- Rana-ladrona adornada
  Eleutherodactylus dennisi (Lynch, 1970) -- valid -- Rana-chirriadora de Dennis
  Eleutherodactylus dilatus (Davis and Dixon, 1955) -- valid -- Rana-fisgona guerrerense
  Eleutherodactylus dixoni Lynch, 1991 -- invalid -- Rana-fisgona labios blancos
  Eleutherodactylus glaucus Lynch, 1967 -- invalid -- Rana-ladrona gris
  Eleutherodactylus grandis (Dixon, 1957) -- valid -- Rana-fisgona mayor
  Eleutherodactylus greggi Bumzahem, 1955 -- invalid -- Rana-ladrona de Gregg
  Eleutherodactylus guerreroensis Lynch, 1967 -- invalid -- Rana-ladrona guerrerense
  Eleutherodactylus guttilatus (Cope, 1879) -- valid -- Rana-chirriadora punteada, Spotted Chirping Frog
  Eleutherodactylus hobartsmithi Taylor, 1937 -- invalid -- Rana-ladrona de Smith
  Eleutherodactylus interorbitalis (Langebartel and Shannon, 1956) -- valid -- Rana-chirriadora anteojuda
  Eleutherodactylus laticeps (Duméril, 1853) -- invalid -- Rana-ladrona cabeza ancha
  Eleutherodactylus leprus (Cope, 1879) -- valid -- Rana-chirriadora leprosa
  Eleutherodactylus lineatus (Brocchi, 1879) -- invalid -- Rana-ladrona de montaña
  Eleutherodactylus longipes (Baird, 1859) -- valid -- Rana-chirriadora de la Huasteca
  Eleutherodactylus matudai Taylor, 1941 -- invalid -- Rana-chirriadora de Matuda
  Eleutherodactylus maurus Hedges, 1989 -- valid -- Rana-fisgona café
  Eleutherodactylus megalotympanum Shannon and Werler, 1955 -- invalid -- Rana-ladrona de San Martín
  Eleutherodactylus mexicanus (Brocchi, 1877) -- invalid -- Rana-ladrona mexicana
  Eleutherodactylus modestus (Taylor, 1942) -- valid -- Rana-chirriadora dedos chatos
  Eleutherodactylus nitidus (Peters, 1870) -- valid -- Rana-fisgona deslumbrante
  Eleutherodactylus nivicolimae (Dixon and Webb, 1966) -- invalid -- Rana-chirriadora del Nevado de Colima
  Eleutherodactylus occidentalis Taylor, 1941 -- invalid -- Rana-ladradora costeña
  Eleutherodactylus omiltemanus (Günther, 1900) -- invalid -- Rana-ladrona de omilteme
  Eleutherodactylus pallidus (Duellman, 1958) -- valid -- Rana-chirriadora pálida
  Eleutherodactylus pipilans (Taylor, 1940) -- valid -- Rana-chirriadora pipilo
  Eleutherodactylus planirostris (Cope, 1862) -- valid -- Greenhouse Frog, Rana-ladrona de invernadero
  Eleutherodactylus polymniae Campbell, Lamar and Hillis, 1989 -- invalid -- Rana-ladrona de Sierra de Juárez
  Eleutherodactylus pygmaeus Taylor, 1937 -- invalid -- Rana-ladrona pigmea
  Eleutherodactylus rhodopis (Cope, 1867) -- invalid -- Rana-ladrona polimorfa
  Eleutherodactylus rubrimaculatus (Taylor and Smith, 1945) -- valid -- Rana-chirriadora puntos rojos
  Eleutherodactylus rufescens (Duellman and Dixon, 1959) -- valid -- Rana-fisgona roja
  Eleutherodactylus rugulosus (Cope, 1870) -- invalid -- Rana-ladrona centroamericana
  Eleutherodactylus saltator Taylor, 1941 -- invalid -- Rana-ladrona danzante
  Eleutherodactylus sartori Lynch, 1965 -- invalid -- Rana-ladrona enana-chiapaneca
  Eleutherodactylus saxatilis (Webb, 1962) -- valid -- Rana-fisgona marmoleada
  Eleutherodactylus silvicola Lynch, 1967 -- invalid -- Rana-ladrona selvática
  Eleutherodactylus spatulatus Smith, 1939 -- invalid -- Rana-ladrona espatulada
  Eleutherodactylus stuarti Lynch, 1967 -- invalid -- Rana-ladrona de Stuart
  Eleutherodactylus syristes (Hoyt, 1965) -- valid -- Rana-fisgona flautera
  Eleutherodactylus tarahumaraensis Taylor, 1940 -- invalid -- Rana-ladradora tarahumara
  Eleutherodactylus taylori Lynch, 1966 -- invalid -- Rana-ladrona de Taylor
  Eleutherodactylus teretistes (Duellman, 1958) -- valid -- Rana-ladrona silbadora
  Eleutherodactylus uno Savage, 1985 -- invalid -- Rana-ladrona de Savage
  Eleutherodactylus verrucipes (Cope, 1885) -- valid -- Rana-chirrionera orejona
  Eleutherodactylus verruculatus (Peters, 1870) -- valid -- Rana-chirrionera menor
  Eleutherodactylus vocalis Taylor, 1940 -- invalid -- Rana-ladrona sonora
  Eleutherodactylus xucanebi Stuart, 1941 -- invalid -- Rana-ladrona de xucaneb
  Eleutherodactylus yucatanensis Lynch, 1965 -- invalid -- Rana-ladrona yucateca
  Elgaria multicarinata (Blainville, 1835) -- valid -- Southern Alligator Lizard, Lagarto escorpión del Sur
  Elgaria parva (Knight and Scudday, 1985) -- invalid -- Lagarto escorpión pigmeo
  Elgaria paucicarinata (Fitch, 1934) -- valid -- Lagarto escorpión de San Lucas, San Lucan Alligator Lizard
  Empidonax affinis (Swainson, 1827) -- valid -- Pine Flycatcher, Mosquero pinero
  Empidonax albigularis P. L. Sclater & Salvin, 1859 -- valid -- White-throated Flycatcher, Mosquero garganta blanca
  Empidonax alnorum Brewster, 1895 -- valid -- Mosquero ailero, Alder Flycatcher, moucherolle des aulnes
  Empidonax difficilis S. F. Baird, 1858 -- valid -- Western Flycatcher, Mosquero californiano, Pacific-slope Flycatcher
  Empidonax flavescens Lawrence, 1865 -- valid -- Yellowish Flycatcher, Mosquero amarillento
  Empidonax flaviventris (W. M. Baird & S. F. Baird, 1843) -- valid -- Mosquero vientre amarillo, Yellow-bellied Flycatcher, moucherolle à ventre jaune
  Empidonax fulvifrons (Giraud, 1841) -- valid -- Buff-breasted Flycatcher, Mosquero pecho leonado
  Empidonax hammondii (Xantus de Vesey, 1858) -- valid -- Mosquero de Hammond, Hammond's Flycatcher
  Empidonax minimus (W. M. Baird & S. F. Baird, 1843) -- valid -- Mosquero mímimo, Least Flycatcher, moucherolle tchébec
  Empidonax oberholseri A. R. Phillips, 1939 -- valid -- Dusky Flycatcher, Mosquero oscuro
  Empidonax occidentalis Nelson, 1897 -- valid -- Cordilleran Flycatcher, Mosquero barranqueño
  Empidonax traillii (Audubon, 1828) -- valid -- Mosquero saucero, Willow Flycatcher, moucherolle des saules
  Empidonax virescens (Vieillot, 1818) -- valid -- Mosquero verdoso, Acadian Flycatcher, moucherolle vert
  Empidonax wrightii S. F. Baird, 1858 -- valid -- Gray Flycatcher, Mosquero gris, Grey Flycatcher
  Enhydra lutris (Linnaeus, 1758) -- valid -- Sea Otter, Nutria Marina
  Ensatina eschscholtzii Gray, 1850 -- valid -- Salamandra ensantina, Ensatina
  Enulius flavitorques (Cope, 1868) -- valid -- Culebra-cola larga del Pacífico, Pacific Longtail Snake
  Enulius oligostichus H. M. Smith, Arndt and Sherbrook, 1967 -- valid -- Culebra-cola larga mexicana, Mexican Longtail Snake
  Enyaliosaurus clarki (Bailey, 1928) -- invalid -- Garrobo del Balsas
  Enyaliosaurus defensor (Cope, 1866) -- invalid -- Garrobo yucateco
  Enyaliosaurus quinquecarinatus (Gray, 1842) -- invalid -- Garrobo oaxaqueño
  Eptesicus fuscus (Palisot de Beauvois, 1796) -- valid -- Murciélago-moreno norteamericano, grande chauve-souris brune, Big Brown Bat
  Eremophila alpestris (Linnaeus, 1758) -- valid -- Alondra cornuda, Horned Lark, alouette hausse-col
  Erethizon dorsatum (Linnaeus, 1758) -- invalid -- porcupine, common porcupine, porc-épic d'Amérique, Puercoespín norteamericano
  Eretmochelys imbricata (Linnaeus, 1766) -- valid -- carey, Hawksbill, Tortuga-marina de carey, Hawksbill Sea Turtle
  Ergaticus ruber (Swainson, 1827) -- invalid -- Chipe rojo, Red Warbler
  Ergaticus versicolor (Salvin, 1863) -- invalid -- Chipe rosado, Pink-headed Warbler
  Eridiphas slevini (Tanner, 1943) -- invalid -- Culebra-nocturna de Baja California
  Eschrichtius robustus (Lilljeborg, 1861) -- valid -- Gray Whale, Ballena gris, grey whale
  Eubalaena glacialis (Müller, 1776) -- valid -- North Atlantic Right Whale, black right whale, baleine noire, Ballena franca, Northern Right Whale
  Eucometis penicillata (Spix, 1825) -- valid -- Tángara cabeza gris, Grey-headed Tanager, Gray-headed Tanager, Tangara à tête grise, Tangara cabecigrís, pipira-da-taoca
  Euderma maculatum (J. A. Allen, 1891) -- valid -- Murciélago pinto, Spotted Bat, Pinto Bat
  Eudocimus albus (Linnaeus, 1758) -- valid -- Ibis blanco, White Ibis, American White Ibis, Ibis blanc
  Eugenes fulgens (Swainson, 1827) -- valid -- Magnificent Hummingbird, Colibrí magnífico, Rivoli's Hummingbird
  Eumeces altamirani Dugès, 1891 -- invalid -- Eslizón de Tepalcatepec
  Eumeces brevirostris (Günther, 1860) -- invalid -- Eslizón chato
  Eumeces colimensis Taylor, 1935 -- invalid -- Eslizón de Colima
  Eumeces copei Taylor, 1933 -- invalid -- Eslizón de Cope
  Eumeces gilberti Van Denburgh, 1896 -- invalid -- Gilbert's Skink, Eslizón de Gilbert
  Eumeces lagunensis Van Denburgh, 1895 -- invalid -- Eslizón de San Lucas
  Eumeces lynxe Wiegmann, 1834 -- invalid -- Eslizón encinero
  Eumeces multilineatus Tanner, 1957 -- invalid -- Eslizón de Chihuahua
  Eumeces multivirgatus (Hallowell, 1857) -- invalid -- Many-lined Skink, Eslizón muchas líneas
  Eumeces obsoletus (Baird and Girard, 1852) -- invalid -- Great Plains Skink, Eslizón de la Gran Planicie
  Eumeces ochoterenae Taylor, 1933 -- invalid -- Eslizón guerrerense
  Eumeces parviauriculatus Taylor, 1933 -- invalid -- Eslizón pigmeo-norteño
  Eumeces parvulus Taylor, 1933 -- invalid -- Eslizón pigmeo-del sur
  Eumeces schwartzei Fischer, 1884 -- invalid -- Eslizón de Schwartz
  Eumeces skiltonianus (Baird and Girard, 1852) -- invalid -- Western Skink, Eslizón occidental
  Eumeces sumichrasti (Cope, 1867) -- invalid -- Eslizón listado
  Eumeces tetragrammus (Baird, 1859) -- invalid -- Four-lined Skink, Eslizón cuatro líneas
  Eumomota superciliosa (Sandbach, 1837) -- valid -- Momoto ceja azul, Turquoise-browed Motmot, torogoz, Momoto cejiazul, Motmot à sourcils bleus
  Eumops glaucinus (Wagner, 1843) -- valid -- Wagner's Mastiff-bat, Murciélago-con bonete de Wagner, Wagner's Bonneted Bat
  Eumops perotis (Schinz, 1821) -- valid -- Western Bonneted Bat, Western Mastiff-bat, Murciélago-con bonete mayor, Greater Bonneted Bat
  Eumops underwoodi Goodwin, 1940 -- valid -- Murciélago-con bonete de Underwood, Underwood's Mastiff-bat, Underwood's Bonneted Bat
  Euphagus carolinus (Statius Muller, 1776) -- valid -- Tordo canadiense, Rusty Blackbird, quiscale rouilleux
  Euphagus cyanocephalus (Wagler, 1829) -- valid -- Brewer's Blackbird, quiscale de Brewer, Tordo ojo amarillo
  Eupherusa cyanophrys J. S. Rowley & Orr, 1964 -- valid -- Colibrí oaxaqueño, Oaxaca Hummingbird, Blue-capped Hummingbird
  Eupherusa eximia (Delattre, 1843) -- valid -- Colibrí cola rayada, Stripe-tailed Hummingbird
  Eupherusa poliocerca D. G. Elliot, 1871 -- valid -- Colibrí cola blanca, White-tailed Hummingbird
  Euphonia affinis (Lesson, 1842) -- valid -- Eufonia garganta negra, Scrub Euphonia
  Euphonia elegantissima (Bonaparte, 1838) -- valid -- Eufonia capucha azul, Elegant Euphonia
  Euphonia gouldi P. L. Sclater, 1857 -- valid -- Eufonia olivácea, Olive-backed Euphonia
  Euphonia hirundinacea Bonaparte, 1838 -- valid -- Eufonia garganta amarilla, Yellow-throated Euphonia
  Euphonia minuta Cabanis, 1849 -- valid -- Eufonia vientre blanco, White-vented Euphonia
  Euptilotis neoxenus (Gould, 1838) -- valid -- Quetzal oreillard, Eared Trogon, Eared Quetzal, Trogón orejón
  Eurypyga helias (Pallas, 1781) -- valid -- Ave sol, Sunbittern
  Euthlypis lachrymosa (Bonaparte, 1850) -- invalid -- Fan-tailed Warbler, Chipe de roca
  Exiliboa placata Bogert, 1968 -- valid -- Boa-enana oaxaqueña
  Falco columbarius Linnaeus, 1758 -- valid -- Merlin, Halcón esmerejón, Faucon émerillon, Esmerejón, esmerilhão
  Falco deiroleucus Temminck, 1825 -- valid -- Orange-breasted Falcon, Halcón pecho rufo, Faucon orangé, Halcón pechirrojo, falcão-de-peito-laranja
  Falco femoralis Temminck, 1822 -- valid -- Aplomado Falcon, Halcón fajado, Faucon aplomado, Halcón aleto, falcão-de-coleira
  Falco mexicanus Schlegel, 1850 -- valid -- Prairie Falcon, Halcón mexicano, Faucon des prairies, falcão-das-pradarias
  Falco peregrinus Tunstall, 1771 -- valid -- Peregrine Falcon, Halcón peregrino, Faucon pèlerin, falcão-peregrino
  Falco rufigularis Daudin, 1800 -- valid -- Bat Falcon, Halcón enano, Faucon des chauves-souris, Halcón murcielaguero, cauré
  Falco sparverius Linnaeus, 1758 -- valid -- American Kestrel, Cernícalo americano, Crécerelle d'Amérique, quiriquiri, peneireiro-americano
  Feresa attenuata Gray, 1874 -- valid -- Pygmy Killer Whale, Orca pigmea
  Ficimia olivacea Gray, 1849 -- valid -- Culebra-naricilla huasteca
  Ficimia publia Cope, 1866 -- valid -- Culebra-naricilla manchada, Blotched Hooknose Snake
  Ficimia ramirezi H. M. Smith and Langebartel, 1949 -- valid -- Culebra-naricilla de Ramírez, Ramirez's Hooknose Snake
  Ficimia ruspator H. M. Smith and Taylor, 1941 -- valid -- Culebra-naricilla guerrerense, Guerreran Hooknose Snake
  Ficimia streckeri Taylor, 1931 -- valid -- Mexican Hook-nosed Snake, Tamaulipan Hook-nosed Snake, Culebra-naricilla mexicana, Tamaulipan Hooknose Snake, Mexican Hooknose Snake
  Ficimia variegata (Günther, 1858) -- valid -- Culebra-naricilla de Tehuantepec, Tehuantepec Hooknose Snake
  Florisuga mellivora (Linnaeus, 1758) -- valid -- Colibrí nuca blanca, White-necked Jacobin
  Formicarius analis (Orbigny & Lafresnaye, 1837) -- valid -- Hormiguero-cholino cara negra, Black-faced Antthrush
  Forpus cyanopygius (Souancé, 1856) -- valid -- Mexican Parrotlet, Perico catarina, Toui du Mexique, Cotorrita mexicana, tuim-mexicano
  Fregata magnificens Mathews, 1914 -- valid -- Fragata magnífica, Magnificent Frigatebird, Frégate superbe
  Fregata minor (Gmelin, 1789) -- valid -- Fragata pelágica, Great Frigatebird, Frégate du Pacifique
  Fulica americana Gmelin, 1789 -- valid -- Gallareta americana, American Coot, foulque d'Amérique
  Fulmarus glacialis (Linnaeus, 1761) -- valid -- Fulmar norteño, Northern Fulmar, Fulmar boréal
  Galbula ruficauda Cuvier, 1816 -- valid -- Rufous-tailed Jacamar, Jacamar cola rufa
  Gallinago gallinago (Linnaeus, 1758) -- valid -- Agachona común, Common Snipe, Bécassine des marais, Agachadiza común, narceja-comum
  Gallinula chloropus (Linnaeus, 1758) -- valid -- Gallineta frente roja, Common Moorhen, gallinule poule-d'eau
  Gambelia wislizenii (Baird and Girard, 1852) -- valid -- Long-nosed Leopard Lizard, Lagartija-leopardo narigona, Longnose Leopard Lizard
  Gastrophryne elegans (Boulenger, 1882) -- valid -- Sapo-boca angosta elegante
  Gastrophryne olivacea (Hallowell, 1856) -- valid -- Great Plains Narrow-mouthed Toad, Sapo-boca angosta oliváceo, Western Narrow-mouthed Toad
  Gastrophryne usta (Cope, 1866) -- invalid -- Sapo-boca angosta huasteco
  Gavia adamsii (G. R. Gray, 1859) -- valid -- Colimbo de Adams, Yellow-billed Loon, Plongeon à bec blanc, White-billed Diver
  Gavia immer (Brunnich, 1764) -- valid -- Colimbo mayor, Common Loon, Great Northern Loon, Great Northern Diver, Plongeon huard
  Gavia pacifica (Lawrence, 1858) -- valid -- Pacific Loon, Colimbo pacífico, Plongeon du Pacifique, Pacific Diver
  Gavia stellata (Pontoppidan, 1763) -- valid -- Colimbo menor, Red-throated Loon, Red-throated Diver, Plongeon catmarin
  Geagras redimitus Cope, 1876 -- valid -- Culebra-minera de Tehuantepec, Tehuantepec Striped Snake
  Gehyra mutilata (Wiegmann, 1834) -- valid -- Stump-toed Gecko, Geco plano, Mutilating Gecko
  Geococcyx californianus (Lesson, 1829) -- valid -- Greater Roadrunner, Correcaminos norteño
  Geococcyx velox (Wagner, 1836) -- valid -- Correcaminos tropical, Lesser Roadrunner
  Geomys arenarius Merriam, 1895 -- valid -- Tuza arenera, Desert Pocket Gopher
  Geomys personatus True, 1889 -- valid -- Tuza texana, Texas Pocket Gopher
  Geophis anocularis Dunn, 1920 -- valid -- Culebra-minera de Sierra Mije, Sierra Mije Earth Snake
  Geophis bicolor Günther, 1868 -- valid -- Culebra-minera del Altiplano, Mexican Plateau Earth Snake
  Geophis blanchardi Taylor and H. M. Smith, 1939 -- valid -- Culebra-minera de Blanchard, Blanchard's Earth Snake
  Geophis cancellatus H. M. Smith, 1941 -- valid -- Culebra-minera de Chiapas, Chiapas Earth Snake
  Geophis carinosus Stuart, 1941 -- valid -- Culebra-minera aquillada, Keeled Earth Snake
  Geophis chalybeus (Wagler, 1830) -- valid -- Culebra-minera veracruzana, Veracruz Earth Snake
  Geophis dubius (Peters, 1861) -- valid -- Culebra-minera de la Mesa del Sur, Mesa del Sur Earth Snake
  Geophis duellmani H. M. Smith and Holland, 1969 -- valid -- Culebra-minera de Sierra de Juárez, Sierra Juarez Earth Snake
  Geophis dugesi Bocourt, 1883 -- invalid -- Culebra-minera de Chihuahua
  Geophis immaculatus Downs, 1967 -- valid -- Culebra-minera inmaculada, Downs' Earth Snake
  Geophis incomptus Duellman, 1959 -- valid -- Culebra-minera de Sierra Coacolman, Sierra Coalcoman Earth Snake
  Geophis isthmicus (Boulenger, 1894) -- valid -- Culebra-minera de Tehuantepec, Isthmian Earth Snake
  Geophis laticinctus H. M. Smith and Williams, 1963 -- valid -- Culebra-minera de la Mesa Central, Mesa Central Earth Snake
  Geophis latifrontalis Garman, 1883 -- valid -- Culebra-minera potosina, Potosí Earth Snake
  Geophis maculiferus Taylor, 1941 -- valid -- Culebra-minera michoacana, Michoacán Earth Snake
  Geophis mutitorques (Cope, 1885) -- valid -- Culebra-minera de tierras altas, Highland Earth Snake
  Geophis nasalis (Cope, 1868) -- valid -- culeba-minera del café, Coffee Earth Snake
  Geophis nigrocinctus Duellman, 1959 -- valid -- Culebra-minera rayas negras, Black-banded Earth Snake
  Geophis omiltemanus Günther, 1893 -- valid -- Culebra-minera guerrerense, Guerreran Earth Snake
  Geophis pyburni Campbell and Murphy, 1977 -- valid -- Culebra-minadora de Pyburn, Pyburn's Earth Snake
  Geophis russatus H. M. Smith and Williams, 1966 -- valid -- Culebra-minadora roja, Red Earth Snake
  Geophis sallaei Boulenger, 1894 -- valid -- Culebra-minadora de Salle, Sallae's Earth Snake
  Geophis semidoliatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Culebra-minadora coralillo, Coral Earth Snake
  Geophis sieboldi (Jan, 1862) -- valid -- Culebra-miandora de Siebold, Siebold's Earth Snake
  Geophis tarascae Hartweg, 1959 -- valid -- Culebra-miandora tarasca, Tarascan Earth Snake
  Geothlypis beldingi Ridgway, 1882 -- valid -- Mascarita peninsular, Belding's Yellowthroat, Paruline de Belding
  Geothlypis flavovelata Ridgway, 1896 -- valid -- Mascarita de Altamira, Altamira Yellowthroat, Paruline à couronne jaune
  Geothlypis nelsoni Richmond, 1900 -- valid -- Mascarita matorralera, Hooded Yellowthroat, Paruline de Nelson
  Geothlypis poliocephala S. F. Baird, 1865 -- valid -- Gray-crowned Yellowthroat, Mascarita pico grueso, Paruline à calotte grise, Grey-crowned Yellowthroat
  Geothlypis speciosa P. L. Sclater, 1859 -- valid -- Mascarita transvolcánica, Black-polled Yellowthroat, Paruline à face noire
  Geothlypis trichas (Linnaeus, 1766) -- valid -- Mascarita común, Common Yellowthroat, Paruline masquée
  Geotrygon albifacies P. L. Sclater, 1858 -- invalid -- Paloma-perdiz cara blanca, White-faced Quail-Dove
  Geotrygon lawrencii Salvin, 1874 -- invalid -- Paloma-perdiz tuxtleña, Purplish-backed Quail-Dove
  Geotrygon montana (Linnaeus, 1758) -- valid -- Ruddy Quail-Dove, Paloma-perdiz rojiza
  Geranospiza caerulescens (Vieillot, 1817) -- valid -- Gavilán zancón, Crane Hawk, Buse échasse
  Gerrhonotus liocephalus Wiegmann, 1828 -- valid -- Texas Alligator Lizard, Lagarto escorpión texano, Smooth-headed Alligator Lizard, Wiegmann's Alligator Lizard
  Gerrhonotus lugoi McCoy, 1970 -- valid -- Lagarto escorpión de Lugo, Lugo's Alligator Lizard
  Glaucidium brasilianum (J. F. Gmelin, 1788) -- valid -- Ferruginous Pygmy-Owl, Tecolote bajeño, Ferruginous Pygmy Owl
  Glaucidium gnoma Wagler, 1832 -- valid -- Northern Pygmy-Owl, Tecolote serrano, Mountain Pygmy Owl
  Glaucidium griseiceps Sharpe, 1875 -- valid -- Tecolote mesoamericano, Central American Pygmy Owl, Central American Pygmy-Owl
  Glaucidium palmarum Nelson, 1901 -- valid -- Tecolote colimense, Colima Pygmy-Owl, Colima Pygmy Owl
  Glaucidium sanchezi Lowery & R. J. Newman, 1949 -- valid -- Tecolote tamaulipeco, Tamaulipas Pygmy-Owl, Tamaulipas Pygmy Owl
  Glaucomys volans (Linnaeus, 1758) -- valid -- petit polatouche, Ardilla-voladora del sur, Southern Flying Squirrel
  Gonatodes albogularis (Duméril and Bibron, 1836) -- valid -- Yellow-headed Gecko, Geco cabeza amarilla
  Gopherus berlandieri (Agassiz, 1857) -- valid -- Galápago tamaulipeco, Texas Tortoise, Berlandier's Tortoise
  Gopherus flavomarginatus Legler, 1959 -- valid -- Galápago de Mapimí, Bolson Tortoise
  Grallaria guatimalensis Prevost & Des Murs, 1842 -- valid -- Hormiguero-cholino escamoso, Scaled Antpitta
  Grampus griseus (G. Cuvier, 1812) -- valid -- Risso's Dolphin, grampus, Delfín chato, gray grampus
  Granatellus sallaei (Bonaparte, 1856) -- valid -- Granatelo yucateco, Grey-throated Chat, Gray-throated Chat
  Granatellus venustus Bonaparte, 1850 -- valid -- Granatelo mexicano, Red-breasted Chat
  Grus americana (Linnaeus, 1758) -- valid -- Whooping Crane, Grulla blanca
  Grus canadensis (Linnaeus, 1758) -- valid -- Grulla gris, Sandhill Crane, grue du Canada
  Guiraca caerulea (Linnaeus, 1758) -- invalid -- Picogordo azul, Blue Grosbeak, guicara bleu
  Gyalopion canum (Cope, 1860) -- valid -- Western Hook-nosed Snake, Chihuahuan Hook-nosed Snake, Culebra-nariz ganchuda de Chihuahua, Western Hooknose Snake
  Gyalopion quadrangulare (Günther, 1893) -- valid -- Thornscrub Hook-nosed Snake, Culebra-nariz ganchuda de desierto, Thornscrub Hooknose Snake, Desert Hooknose Snake
  Gymnogyps californianus (Shaw, 1797) -- valid -- California Condor, Cóndor californiano, Condor de Californie
  Gymnophthalmus speciosus (Hallowell, 1861) -- valid -- Lagartija-anteojada dorada, Golden Tegulet, Golden Spectacled Tegu, Lagartija Dorada, Golden Spectacled Lizard
  Gymnorhinus cyanocephalus Wied-Neuwied, 1841 -- valid -- Pinyon Jay, Chara piñonera
  Habia fuscicauda (Cabanis, 1861) -- valid -- Tángara-hormiguera garganta roja, Red-throated Ant-Tanager, Red-throated Ant Tanager
  Habia rubica (Vieillot, 1817) -- valid -- Tángara-hormiguera corona roja, Red-crowned Ant-Tanager, Red-crowned Ant Tanager
  Haematopus bachmani Audubon, 1838 -- valid -- Black Oystercatcher, Ostrero negro, Huîtrier de Bachman, American Black Oystercatcher, Ostrero Negro Norteamericano, piru-piru-preto-norteamericano
  Haematopus palliatus Temminck, 1820 -- valid -- Ostrero americano, American Oystercatcher, Huîtrier d'Amérique, Ostrero pío americano, piru-piru
  Haliaeetus leucocephalus (Linnaeus, 1766) -- valid -- Águila cabeza blanca, Bald Eagle, Pygargue à tête blanche
  Haplospiza rustica (Tschudi, 1844) -- valid -- Semillero pizarra, Slaty Finch, Haplospize ardoisé, Yal pizarroso
  Harpagus bidentatus (Latham, 1790) -- valid -- Gavilán bidentado, Double-toothed Kite, Milan bidenté
  Harpia harpyja (Linnaeus, 1758) -- valid -- Águila arpía, Harpy Eagle, Harpie féroce
  Harpyhaliaetus solitarius (Tschudi, 1844) -- valid -- Águila solitaria, Montane Solitary Eagle, Solitary Eagle, Buse solitaire
  Heliomaster constantii (Delattre, 1843) -- valid -- Plain-capped Starthroat, Colibrí picudo
  Heliomaster longirostris (Audebert & Vieillot, 1801) -- valid -- Colibrí pico largo, Long-billed Starthroat
  Heliornis fulica (Boddaert, 1783) -- valid -- Pájaro cantil, Sungrebe
  Heliothryx barroti (Bourcier, 1843) -- valid -- Hada enmascarada, Purple-crowned Fairy
  Helmitheros vermivorus (J. F. Gmelin, 1789) -- invalid -- Chipe gusanero, Worm-eating Warbler, paruline vermivore
  Heloderma horridum (Wiegmann, 1829) -- valid -- Mexican Beaded Lizard, Beaded Lizard, Lagarto enchaquirado
  Heloderma suspectum Cope, 1869 -- valid -- Gila Monster, Lagarto de Gila
  Hemidactylus frenatus Schlegel, 1836 -- valid -- Common House Gecko, Geco-casero bocón, Bridled House Gecko
  Hemidactylus mabouia (Moreau De Jonnès, 1818) -- valid -- Cosmopolitan House Gecko, Afro-American House Gecko, Geco-casero tropical, Afroamerican house gecko, Wood Slave
  Hemidactylus turcicus (Linnaeus, 1758) -- valid -- Mediterranean Gekko, Mediterranean House Gecko, Geco-casero del Mediterráneo, Mediterranean Gecko
  Henicorhina leucophrys (Tschudi, 1844) -- valid -- Chivirín pecho gris, Grey-breasted Wood Wren, Gray-breasted Wood-Wren
  Henicorhina leucosticta (Cabanis, 1847) -- valid -- Chivirín pecho blanco, White-breasted Wood Wren, White-breasted Wood-Wren
  Herpailurus yaguarondi (Lacépède, 1809) -- invalid -- Jaguarundi, jaguarundi
  Herpetotheres cachinnans (Linnaeus, 1758) -- valid -- Laughing Falcon, Halcón guaco, Macagua rieur, Halcón reidor, acauã
  Heterodon nasicus Baird and Girard, 1852 -- valid -- Western Hog-nosed Snake, Culebra-nariz de cerdo occidental, Western Hognose Snake, Plains Hognose Snake, Plains Hog-nosed Snake
  Heteroscelus incanus (J. F. Gmelin, 1789) -- invalid -- Playero vagabundo, Wandering Tattler
  Himantopus mexicanus (P. L. S. Müller, 1776) -- valid -- Ae'o, Hawaiian Stilt, Candelero americano, Black-necked Stilt, echasse d'Amérique, Échasse d'Amérique, Cigüeñuela de Cuello Negro, pernilongo-de-costas-negras
  Hirundo fulva Vieillot, 1808 -- invalid -- Cave Swallow, Golondrina pueblera
  Hirundo pyrrhonota Vieillot, 1817 -- invalid -- Cliff Swallow, Golondrina risquera
  Hirundo rustica Linnaeus, 1758 -- valid -- Golondrina tijereta, Barn Swallow, hirondelle rustique
  Histrionicus histrionicus (Linnaeus, 1758) -- valid -- Pato arlequín, Harlequin Duck, Arlequin plongeur, pato-arlequim
  Holbrookia lacerata Cope, 1880 -- valid -- Spot-tailed Earless Lizard, Lagartija-sorda cola punteada, Plateau Earless Lizard, Northern Spot-tailed Earless Lizard
  Holbrookia maculata Girard, 1851 -- valid -- Lesser Earless Lizard, Common Earless Lizard, Lagartija-sorda menor, Common Lesser Earless Lizard
  Holbrookia propinqua Baird and Girard, 1852 -- valid -- Keel-scaled Earless Lizard, Keeled Earless Lizard, Lagartija-sorda carinata
  Hyalinobatrachium fleischmanni (Boettger, 1893) -- valid -- Rana vientre traslúcido
  Hyla altipotens Duellman, 1968 -- invalid -- Rana-de árbol vientre amarilla
  Hyla arborescandens Taylor, 1939 -- invalid -- Rana-de árbol de bromelia- menor
  Hyla arenicolor Cope, 1866 -- invalid -- Canyon Treefrog, Rana-de árbol color arena
  Hyla bistincta Cope, 1877 -- invalid -- Rana-de árbol de pliegue-mexicana
  Hyla bogertae Straughan and Wright, 1969 -- invalid -- Rana-de árbol acuática-de Bogart
  Hyla cembra Caldwell, 1974 -- invalid -- Rana-de árbol de Sierra Madre del Sur
  Hyla chaneque Duellman, 1961 -- invalid -- Rana-de árbol hada
  Hyla charadricola Duellman, 1964 -- invalid -- Rana-de árbol poblana
  Hyla chryses Adler, 1965 -- invalid -- Rana-de árbol dorada
  Hyla crassa (Brocchi, 1877) -- invalid -- Rana-de árbol acuática
  Hyla cyanomma Caldwell, 1974 -- invalid -- Rana-de árbol ojos azules
  Hyla dendroscarta Taylor, 1940 -- invalid -- Rana-de árbol de bromelia-mayor
  Hyla ebraccata Cope, 1874 -- invalid -- Rana-de árbol amarillenta
  Hyla echinata Duellman, 1961 -- invalid -- Rana-de árbol de pliegue-oaxaqueña
  Hyla erythromma Taylor, 1937 -- invalid -- Rana-de árbol común
  Hyla euphorbiacea Günther, 1858 -- invalid -- Rana-de árbol de Los Altos-del Sur
  Hyla eximia Baird, 1854 -- invalid -- Mountain Treefrog, Rana-de árbol de montaña
  Hyla godmani Günther, 1901 -- invalid -- Rana-de árbol de Godman
  Hyla hazelae Taylor, 1940 -- invalid -- Rana-de árbol de Hazel
  Hyla juanitae Snyder, 1972 -- invalid -- Rana-de árbol de Juanita
  Hyla loquax Gaige and Stuart, 1934 -- invalid -- Rana-de árbol sonorense
  Hyla melanomma Taylor, 1940 -- invalid -- Rana-de árbol ojo negro
  Hyla microcephala Cope, 1886 -- invalid -- Rana-de árbol amarilla
  Hyla miotympanum Cope, 1863 -- invalid -- Rana-de árbol mixe
  Hyla mixomaculata Taylor, 1950 -- invalid -- Rana-de árbol jaspeada
  Hyla mykter Adler and Dennis, 1972 -- invalid -- Rana-de árbol hocico aquillado
  Hyla nubicola Duellman, 1964 -- invalid -- Rana-de árbol de bosque mesófilo
  Hyla pachyderma Taylor, 1942 -- invalid -- Rana-de árbol semiacuática
  Hyla pellita Duellman, 1968 -- invalid -- Rana-de árbol oaxaqueña
  Hyla pentheter Adler, 1965 -- invalid -- Rana-de árbol de luto
  Hyla picta (Günther, 1901) -- invalid -- Rana-de árbol pintada
  Hyla pinorum Taylor, 1937 -- invalid -- Rana-de árbol de pinar
  Hyla plicata Brocchi, 1877 -- invalid -- Rana-de árbol plegada o surcada
  Hyla robertmertensi Taylor, 1937 -- invalid -- Rana-de árbol de Mertens
  Hyla robertsorum Taylor, 1940 -- invalid -- Rana-de árbol de Robert
  Hyla sabrina Caldwell, 1974 -- invalid -- Rana-de árbol de Sierra de Juárez
  Hyla sartori Smith, 1951 -- invalid -- Rana-de árbol de Taylor
  Hyla siopela Duellman, 1968 -- invalid -- Rana-de árbol muda
  Hyla smaragdina Taylor, 1940 -- invalid -- Rana-de árbol esmeralda
  Hyla smithii Boulenger, 1902 -- invalid -- Rana-de árbol mexicana-enana
  Hyla sumichrasti (Brocchi, 1879) -- invalid -- Rana-de árbol de sumichrast
  Hyla taeniopus Günther, 1901 -- invalid -- Rana-de árbol jarocha
  Hyla thorectes Adler, 1965 -- invalid -- Rana-de árbol moteada
  Hyla trux Adler and Dennis, 1972 -- invalid -- Rana-de árbol de espolón
  Hyla valancifer Firschein and Smith, 1956 -- invalid -- Rana-de árbol de San Martín
  Hyla walkeri Stuart, 1954 -- invalid -- Rana-de árbol de Walker
  Hylocharis eliciae (Bourcier & Mulsant, 1846) -- invalid -- Blue-throated Goldentail, Zafiro garganta azul, Blue-throated Sapphire
  Hylocharis leucotis (Vieillot, 1818) -- invalid -- White-eared Hummingbird, Zafiro oreja blanca
  Hylocharis xantusii (Lawrence, 1861) -- invalid -- Zafiro de Xantus, Xantus's Hummingbird
  Hylocichla mustelina (Gmelin, 1789) -- valid -- Zorzal maculado, Wood Thrush, grive des bois
  Hylomanes momotula M. H. K. Lichtenstein, 1839 -- valid -- Momoto enano, Tody Motmot, Motmot nain
  Hylophilus decurtatus (Bonaparte, 1838) -- valid -- Verdillo gris, Lesser Greenlet
  Hylophilus ochraceiceps P. L. Sclater, 1860 -- valid -- Verdillo ocre, Tawny-crowned Greenlet
  Hylorchilus navai Crossin & Ely, 1973 -- valid -- Chivirín de Nava, Nava's Wren
  Hylorchilus sumichrasti (Lawrence, 1871) -- valid -- Chivirín de Sumichrast, Sumichrast's Wren
  Hyperoodon planifrons Flower, 1882 -- valid -- southern bottle-nosed whale, Southern Bottlenose Whale, Ballena-picuda frente plana
  Hypopachus barberi Schmidt, 1939 -- valid -- Rana-oveja de Barber
  Hypopachus variolosus (Cope, 1866) -- valid -- Rana-oveja común, Northern Sheep Frog, Sheep Frog
  Hypsiglena torquata (Günther, 1860) -- valid -- Night Snake, Nightsnake, Culebra-nocturna ojo de gato, Sinaloan Nightsnake
  Ibycter americanus (Boddaert, 1783) -- valid -- Red-throated Caracara, Caracara comecacao, Caracara à gorge rouge, Caracara gorjirrojo, cancão
  Icteria virens (Linnaeus, 1758) -- valid -- Buscabreña, Yellow-breasted Chat, Paruline polyglotte
  Icterus auratus Bonaparte, 1850 -- valid -- Bolsero yucateco, Orange Oriole
  Icterus bullockii (Swainson, 1827) -- valid -- Bolsero calandria, Bullock's Oriole
  Icterus chrysater (Lesson, 1844) -- valid -- Bolsero dorso dorado, Yellow-backed Oriole
  Icterus cucullatus Swainson, 1827 -- valid -- Hooded Oriole, Bolsero encapuchado
  Icterus dominicensis (Linnaeus, 1766) -- valid -- Black-cowled Oriole, Bolsero dominico, Greater Antillean Oriole
  Icterus galbula (Linnaeus, 1758) -- valid -- Northern Oriole, Bolsero de Baltimore, Baltimore Oriole, oriole du nord
  Icterus graduacauda Lesson, 1839 -- valid -- Audubon's Oriole, Bolsero cabeza negra
  Icterus gularis (Wagler, 1829) -- valid -- Altamira Oriole, Bolsero de Altamira
  Icterus maculialatus Cassin, 1848 -- valid -- Bolsero guatemalteco, Bar-winged Oriole
  Icterus mesomelas (Wagler, 1829) -- valid -- Bolsero cola amarilla, Yellow-tailed Oriole
  Icterus parisorum Bonaparte, 1838 -- valid -- Scott's Oriole, Bolsero tunero
  Icterus pectoralis (Wagler, 1829) -- valid -- Spot-breasted Oriole, Bolsero pecho manchado
  Icterus pustulatus (Wagler, 1829) -- valid -- Streak-backed Oriole, Bolsero dorso rayado
  Icterus spurius (Linnaeus, 1766) -- valid -- Bolsero castaño, Orchard Oriole, oriole des vergers
  Icterus wagleri P. L. Sclater, 1857 -- valid -- Black-vented Oriole, Bolsero de Wagler
  Ictinia mississippiensis (A. Wilson, 1811) -- valid -- Milano de Misisipi, Mississippi Kite, Milan du Mississippi
  Ictinia plumbea (Gmelin, 1788) -- valid -- Milano plomizo, Plumbeous Kite, Milan bleuâtre
  Idionycteris phyllotis (G. M. Allen, 1916) -- valid -- Murciélago-mula de Allen, Allen's Big-eared Bat, Lappet-browed Bat, Mexican Big-eared Bat
  Iguana iguana (Linnaeus, 1758) -- valid -- Green Iguana, Iguana verde, iguane commun, Common Green Iguana
  Imantodes cenchoa (Linnaeus, 1758) -- valid -- Blunthead Treesnake, Fiddle-string Snake, Blunt-headed Treesnake, Culebra-cordelilla chata, Blunthead Tree Snake
  Imantodes gemmistratus (Cope, 1861) -- valid -- Culebra-cordelilla centroamericana, Central American Tree Snake
  Imantodes tenuissimus (Cope, 1867) -- valid -- Culebra-cordelilla yucateca, Yucatán Blunthead Snake
  Ixalotriton niger Wake and Johnson, 1989 -- valid -- Salamandra-saltarina negra
  Ixobrychus exilis (Gmelin, 1789) -- valid -- Avetoro mínimo, Least Bittern, Petit Blongios
  Ixoreus naevius (Gmelin, 1789) -- valid -- Mirlo pecho cinchado, Varied Thrush, grive à collier
  Jabiru mycteria (Lichtenstein, 1819) -- valid -- Jabiru, Cigüeña jabirú, Jabiru d'Amérique
  Jacana spinosa (Linnaeus, 1758) -- valid -- Northern Jacana, Jacana norteña, Jacana du Mexique, Jacana centroamericana, jaçanã-de-fronte-amarela
  Junco hyemalis (Linnaeus, 1758) -- valid -- junco, Junco ojo oscuro, Dark-eyed Junco, junco ardoisé
  Junco insularis Ridgway, 1876 -- valid -- Junco de Guadalupe, Guadalupe Junco, Junco de Guadalupe
  Junco phaeonotus Wagler, 1831 -- valid -- Junco aux yeux jaunes, Junco ojilumbre, Yellow-eyed Junco, Junco ojo de lumbre
  Kinosternon acutum Gray, 1831 -- valid -- Tortuga-pecho quebrado de Tabasco, Tabasco Mud Turtle
  Kinosternon alamosae Berry and Legler, 1980 -- valid -- Tortuga-pecho quebrado de Álamos, Alamos Mud Turtle
  Kinosternon creaseri Hartweg, 1934 -- valid -- Tortuga-pecho quebrado de Craser, Creaser's Mud Turtle
  Kinosternon flavescens (Agassiz, 1857) -- valid -- Tortuga-pecho quebrado amarilla, Yellow Mud Turtle
  Kinosternon herrerai Stejneger, 1925 -- valid -- Herrera's Mud Turtle, Tortuga-pecho quebrado de Herrera
  Kinosternon hirtipes Wagler, 1830 -- valid -- Mexican mud turtle, Mexican Rough-footed Mud Turtle, Tortuga-pecho quebrado pata rugosa, Rough-footed Mud Turtle
  Kinosternon integrum Le Conte, 1854 -- valid -- Tortuga-pecho quebrado mexicana, Mexican Mud Turtle
  Kinosternon leucostomum Duméril and Bibron in Duméril and Duméril, 1851 -- valid -- Tortuga-pecho quebrado labios blancos, White-lipped Mud Turtle
  Kinosternon oaxacae Berry and Iverson, 1980 -- valid -- Tortuga-pecho quebrado oaxaqueña, Oaxaca Mud Turtle
  Kinosternon scorpioides (Linnaeus, 1766) -- valid -- Tortuga-pecho quebrado escorpión, Scorpion Mud Turtle
  Kinosternon sonoriense Le Conte, 1854 -- valid -- Sonoran mud turtle, Tortuga-pecho quebrado sonorense, Sonora Mud Turtle
  Kogia breviceps (Blainville, 1838) -- valid -- Pygmy Sperm Whale, Cachalote pigmeo
  Laemanctus longipes Wiegmann, 1834 -- valid -- Lemacto coludo, Eastern Casquehead Iguana
  Laemanctus serratus Cope, 1864 -- valid -- Lemacto coronado, Serrated Casquehead Iguana
  Lagenodelphis hosei Fraser, 1956 -- valid -- Fraser's Dolphin, Delfín de Fraser
  Lagenorhynchus obliquidens Gill, 1865 -- valid -- Pacific White-sided Dolphin, Delfín costado blanco
  Lampornis amethystinus Swainson, 1827 -- valid -- Amethyst-throated Hummingbird, Colibrí garganta amatista, Amethyst-throated Mountaingem
  Lampornis clemenciae (R. Lesson, 1830) -- valid -- Blue-throated Hummingbird, Colibrí garganta azul, Blue-throated Mountaingem
  Lampornis viridipallens (Bourcier & Mulsant, 1846) -- valid -- Green-throated Mountain-gem, Colibrí garganta verde, Green-throated Mountaingem
  Lamprolaima rhami (R. Lesson, 1839) -- valid -- Colibrí ala castaña, Garnet-throated Hummingbird
  Lampropeltis alterna (Brown, 1901) -- valid -- Gray-banded Kingsnake, Culebra-real bandas grises, Grey-banded Kingsnake
  Lampropeltis getula (Linnaeus, 1766) -- valid -- Common Kingsnake, Culebra-real común, Eastern Kingsnake
  Lampropeltis mexicana (Garman, 1884) -- valid -- Gray-banded Kingsnake, Culebra-real potosina, Mexican Kingsnake
  Lampropeltis pyromelana (Cope, 1867) -- valid -- Sonoran Mountain Kingsnake, Culebra-real sonorense, Arizona Mountain Kingsnake
  Lampropeltis ruthveni Blanchard, 1920 -- valid -- Culebra-real de Ruthven, Ruthvens Kingsnake
  Lampropeltis triangulum (Lacépède, 1789) -- valid -- Eastern Milk Snake, Eastern Milksnake, Culebra-real coralillo, couleuvre tachetée
  Lampropeltis zonata (Lockington ex Blainville, 1876) -- valid -- California Mountain Kingsnake, Culebra-real californiana, St. Helena Mountain Kingsnake
  Lanio aurantius Lafresnaye, 1846 -- valid -- Tángara garganta negra, Black-throated Shrike-Tanager, Tangara à gorge noire, Tangara gorjinegra, Black-throated Shrike-tanager
  Laniocera rufescens (P. L. Sclater, 1858) -- valid -- Speckled Mourner, Plañidera jaspeada
  Lanius ludovicianus Linnaeus, 1766 -- valid -- Alcaudón verdugo, Loggerhead Shrike, pie-grièche migratrice
  Larus argentatus Pontoppidan, 1763 -- valid -- Gaviota plateada, Herring Gull, Goéland argenté, European Herring Gull, Gaviota argéntea europea, gaivota-argêntea
  Larus atricilla Linnaeus, 1758 -- invalid -- Gaviota reidora, Laughing Gull, mouette atricille
  Larus californicus Lawrence, 1854 -- valid -- Gaviota californiana, California Gull, Goéland de Californie, gaivota-da-califórnia
  Larus canus Linnaeus, 1758 -- valid -- Gaviota cana, Mew Gull, Goéland cendré, Common Gull, famego
  Larus delawarensis Ord, 1815 -- valid -- Gaviota pico anillado, Ring-billed Gull, Goéland à bec cerclé, Gaviota de Delaware, gaivota-de-bico-riscado
  Larus dominicanus M. H. K. Lichtenstein, 1823 -- valid -- Gaviota dominicana, Kelp Gull, Goéland dominicain, Gaviota cocinera, gaivotão
  Larus fuscus Linnaeus, 1758 -- valid -- Gaviota sombría, Lesser Black-backed Gull, Goéland brun, gaivota-da-asa-escura
  Larus glaucescens J. F. Naumann, 1840 -- valid -- Glaucous-winged Gull, Gaviota ala glauca, Goéland à ailes grises, Gaviota de Bering, gaivota-do-mar-de-bering
  Larus heermanni Cassin, 1852 -- valid -- Heermann's Gull, Gaviota ploma, Goéland de Heermann, Gaviota mexicana, gaivota-cinzenta-setentrional
  Larus hyperboreus Gunnerus, 1767 -- valid -- Gaviota blanca, Glaucous Gull, Goéland bourgmestre, Gavión hiperbóreo, gaivotão-branco
  Larus livens Dwight, 1919 -- valid -- Yellow-footed Gull, Gaviota pata amarilla, Goéland de Cortez, Gaviota de Cortés, gaivota-de-pés-amarelos
  Larus minutus Pallas, 1776 -- invalid -- Gaviota mínima, Little Gull, mouette pygmée
  Larus occidentalis Audubon, 1839 -- valid -- Gaviota occidental, Western Gull, Goéland d'Audubon, gaivota-de-pés-rosados
  Larus philadelphia (Ord, 1815) -- invalid -- Gaviota de Bonaparte, Bonaparte's Gull, mouette de Bonaparte
  Larus pipixcan Wagler, 1831 -- invalid -- Gaviota de Franklin, Franklin's Gull, mouette de Franklin
  Larus ridibundus Linnaeus, 1766 -- invalid -- Common Black-headed Gull, Gaviota encapuchada, Black-headed Gull, mouette rieuse
  Larus thayeri W. S. Brooks, 1915 -- invalid -- Gaviota de Thayer, Thayer's Gull, Goéland de Thayer
  Lasionycteris noctivagans (Le Conte, 1831) -- valid -- Murciélago pelo plateado, chauve-souris argentée, Silver-haired Bat, Black Bat, Silver-black Bat
  Lasiurus blossevillii (Lesson and Garnot, 1826) -- valid -- Murciélago-cola peluda de Blossevilli, Red Bat, Western Red Bat, Southern Red Bat
  Lasiurus borealis (Müller, 1776) -- valid -- red bat, chauve-souris rousse, Murciélago-cola peluda rojizo, Eastern Red Bat
  Lasiurus cinereus (Palisot de Beauvois, 1796) -- invalid -- Murciélago-cola peluda canoso, chauve-souris cendrée, Hoary Bat, Northern Hoary Bat
  Lasiurus ega (Gervais, 1856) -- invalid -- Murciélago-cola peluda amarillo, Southern Yellow Bat
  Lasiurus intermedius H. Allen, 1862 -- invalid -- Murciélago-cola peluda norteño, Northern Yellow Bat
  Lasiurus xanthinus (Thomas, 1897) -- invalid -- Murciélago-cola peluda de La Laguna, Western Yellow Bat
  Laterallus jamaicensis (Gmelin, 1789) -- valid -- Polluela negra, Black Rail, râle noir
  Laterallus ruber (P. L. Sclater & Salvin, 1860) -- valid -- Polluela rojiza, Ruddy Crake
  Legatus leucophaius (Vieillot, 1818) -- valid -- Piratic Flycatcher, Papamoscas pirata
  Leopardus pardalis (Linnaeus, 1758) -- valid -- Ocelot, Ocelote
  Leopardus wiedii (Schinz, 1821) -- valid -- Margay, Margay
  Lepidochelys kempi (Garman, 1880) -- invalid -- Tortuga-marina escamosa-del Atlántico
  Lepidochelys olivacea (Eschscholtz, 1829) -- valid -- Pacific ridley, Olive Ridley, Tortuga-marina escamosa-del Pacífico, Olive Ridley Sea Turtle, Pacific Ridley Sea Turtle
  Lepidocolaptes affinis (Lafresnaye, 1839) -- valid -- Spot-crowned Woodcreeper, Trepatroncos corona punteada
  Lepidocolaptes leucogaster (Swainson, 1827) -- valid -- White-striped Woodcreeper, Trepatroncos escarchado
  Lepidocolaptes souleyetii (Des Murs, 1849) -- valid -- Streak-headed Woodcreeper, Trepatroncos corona rayada
  Lepidophyma alvarezi H. M. Smith, 1973 -- invalid -- Lagartija-nocturna de Álvarez del Toro
  Lepidophyma chicoasensis Álvarez and Valentin, 1988 -- valid -- Lagartija-nocturna del Sumidero, Sumidero Tropical Night Lizard
  Lepidophyma dontomasi (H. M. Smith, 1942) -- valid -- Lagartija-nocturna de MacDougall, MacDougall's Tropical Night Lizard
  Lepidophyma flavimaculatum Duméril, 1851 -- valid -- Lagartija-nocturna puntos amarillos, Yellow-spotted Night Lizard
  Lepidophyma gaigeae Mosauer, 1936 -- valid -- Lagartija-nocturna de Gaiger, Gaige's Tropical Night Lizard
  Lepidophyma lipetzi H. M. Smith and del Toro, 1977 -- valid -- Lagartija-nocturna del Ocote, Lipetz's Tropical Night Lizard
  Lepidophyma micropholis Walker, 1955 -- valid -- Lagartija-nocturna de cueva, Cave Tropical Night Lizard
  Lepidophyma occulor H. M. Smith, 1942 -- valid -- Lagartija-nocturna de Jalapa, Japlan Tropical Night Lizard
  Lepidophyma pajapanensis Werler, 1957 -- valid -- Lagartija-nocturna de Pajapan, Pajapan Tropical Night Lizard
  Lepidophyma radula (H. M. Smith, 1942) -- valid -- Lagartija-nocturna de Yautepec, Yautepec Tropical Night Lizard
  Lepidophyma sawini H. M. Smith, 1973 -- invalid -- Lagartija-nocturna de Sawin
  Lepidophyma sylvaticum Taylor, 1939 -- valid -- Lagartija-nocturna de montaña, Madrean Tropical Night Lizard
  Lepidophyma tarascae R. L. Bezy, Webb and Álvarez, 1982 -- valid -- Lagartija-nocturna tarasca, Tarascan Tropical Night Lizard
  Lepidophyma tuxtlae Werler and Shannon, 1957 -- valid -- Lagartija-nocturna de Los Tuxtlas, Tuxtla Tropical Night Lizard
  Leptodactylus labialis (Cope, 1877) -- invalid -- Rana-nidificadora labios blancos
  Leptodactylus melanonotus (Hallowell, 1861) -- valid -- Rana-nidificadora de sabinal
  Leptodeira annulata (Linnaeus, 1758) -- valid -- Culebra-ojo de gato bandada, Banded Cat-eyed Snake
  Leptodeira frenata (Cope, 1886) -- valid -- Culebra-ojo de gato de selva, Rainforest Cat-eyed Snake
  Leptodeira maculata (Hallowell, 1861) -- valid -- Culebra-ojo de gato del suroeste, Southwestern Cat-eyed Snake
  Leptodeira nigrofasciata Günther, 1868 -- valid -- Culebra-ojo de gato cabeza negra, Black-banded Cat-eyed Snake
  Leptodeira punctata (Peters, 1866) -- valid -- Culebra-ojo de gato occidental, Western Cat-eyed Snake
  Leptodeira septentrionalis (Kennicott in Baird, 1859) -- valid -- Cat-eyed Snake, Culebra-ojo de gato norteña o manchada, Northern Cat-eyed Snake
  Leptodeira splendida Günther, 1895 -- valid -- Culebra-ojo de gato espléndida, Splendid Cat-eyed Snake
  Leptodon cayanensis (Latham, 1790) -- valid -- Gavilán cabeza gris, Gray-headed Kite, Grey-headed Kite, Milan de Cayenne
  Leptonycteris curasoae Miller, 1900 -- valid -- Murciélago-hocicudo de Curazao, Curaçaoan Long-nosed Bat, Southern Long-nosed Bat
  Leptonycteris nivalis (Saussure, 1860) -- valid -- Murciélago-hocicudo mayor, Mexican Long-nosed Bat, Greater Long-nosed Bat
  Leptophis ahaetulla (Linnaeus, 1758) -- valid -- Culebra-perico verde, Giant Parrot Snake, Parrot Snake
  Leptophis diplotropis (Günther, 1872) -- valid -- Culebra-perico gargantilla, Pacific Coast Parrot Snake
  Leptophis mexicanus A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Culebra-perico mexicana, Mexican Parrot Snake
  Leptophis modestus (Günther, 1872) -- valid -- Culebra-perico de niebla, Cloud Forest Parrot Snake
  Leptopogon amaurocephalus Tschudi, 1846 -- valid -- Sepia-capped Flycatcher, Mosquero gorra parda
  Leptotila cassini (Lawrence, 1867) -- invalid -- Paloma pecho gris, Grey-chested Dove, Gray-chested Dove
  Leptotila jamaicensis (Linnaeus, 1766) -- valid -- Paloma caribeña, Caribbean Dove
  Leptotila rufaxilla (Richard & Bernard, 1792) -- valid -- Paloma cabeza ploma, Grey-fronted Dove
  Leptotila verreauxi Bonaparte, 1855 -- valid -- White-tipped Dove, Paloma arroyera
  Leptotyphlops bressoni Taylor, 1939 -- invalid -- Serpiente-lombriz michoacana
  Leptotyphlops humilis (Baird and Girard, 1853) -- invalid -- Western Slender Blind Snake, Western Threadsnake, Serpiente-lombriz occidental
  Leptotyphlops maximus Loveridge, 1932 -- invalid -- Serpiente-lombriz gigante
  Lepus alleni Mearns, 1890 -- valid -- Antelope Jack Rabbit, Liebre antilope, Antelope Jackrabbit, Allen's Jackrabbit, White-sided Jackrabbit, liebre torda, liebre blanca, libre appaloosa
  Lepus californicus Gray, 1837 -- valid -- Black-tailed Jack Rabbit, Liebre cola negra, Black-tailed Jackrabbit, California Jackrabbit, Gray-sided Jackrabbit, Narrow-gauge Mule, Jackass-hare, Texas Jack, Texan Hare, Great Plains Jackrabbit
  Lepus callotis Wagler, 1830 -- valid -- White-sided Jack Rabbit, Liebre torda, White-sided Jackrabbit, Beautiful-eared jack rabbit, Gaillard jack rabbit, snow sides, Antelope Rabbit, Gaillard's Jackrabbit, Snowsides, Liebra pinta
  Leucopternis albicollis (Latham, 1790) -- valid -- Aguililla blanca, White Hawk, Buse blanche
  Limnodromus griseus (J. F. Gmelin, 1789) -- valid -- Costurero pico corto, Short-billed Dowitcher, Bécassin roux, Agujeta gris, maçarico-de-costas-brancas, maçarico-de-bico-curto
  Limnodromus scolopaceus (Say, 1822) -- valid -- Costurero pico largo, Long-billed Dowitcher, Bécassin à long bec, Agujeta escolopácea, maçarico-de-bico-comprido
  Limnothlypis swainsonii (Audubon, 1834) -- valid -- Swainson's Warbler, Chipe corona café, Paruline de Swainson
  Limosa fedoa (Linnaeus, 1758) -- valid -- Picopando canelo, Marbled Godwit, Barge marbrée, Aguja canela, maçarico-marmóreo
  Limosa haemastica (Linnaeus, 1758) -- valid -- Picopando ornamentado, Hudsonian Godwit, Barge hudsonienne, Aguja café, maçarico-de-bico-virado
  Limosa lapponica (Linnaeus, 1758) -- valid -- Picopando cola barrada, Bar-tailed Godwit, Barge rousse, Aguja colipinta, fuselo
  Liomys irroratus (Gray, 1868) -- valid -- Ratón-espinoso mexicano, Mexican Spiny Pocket Mouse
  Lipaugus unirufus P. L. Sclater, 1860 -- valid -- Rufous Piha, Pía guardabosques
  Lissodelphis borealis (Peale, 1848) -- valid -- Northern Right Whale Dolphin, Delfín-ballena norteño
  Lophodytes cucullatus (Linnaeus, 1758) -- valid -- Mergo cresta blanca, Hooded Merganser, Harle couronné, Serreta capuchona, merganso-capuchinho
  Lophornis brachylopha R. T. Moore, 1949 -- invalid -- Coqueta cresta corta
  Lophornis helenae (Delattre, 1843) -- valid -- Black-crested Coquette, Coqueta cresta negra
  Lophostrix cristata (Daudin, 1800) -- valid -- Búho cuerno blanco, Crested Owl
  Loxia curvirostra Linnaeus, 1758 -- valid -- Red Crossbill, bec-croisé des sapins, Picotuerto rojo
  Loxocemus bicolor Cope, 1861 -- valid -- Mexican Burrowing Python, Serpiente chatilla
  Lurocalis semitorquatus (J. F. Gmelin, 1789) -- valid -- Chotacabras cola corta, Short-tailed Nighthawk
  Lynx rufus (Schreber, 1777) -- valid -- Bobcat, Lince americano, lynx roux
  Mabuya brachypoda Taylor, 1956 -- invalid -- Mabuya centroamericana
  Macrotus californicus Baird, 1858 -- valid -- California Leaf-nosed Bat, Murciélago-orejón californiano, Californian Leaf-nosed Bat
  Macrotus waterhousii Gray, 1843 -- valid -- Murciélago-orejón mexicano, Waterhouse's Leaf-nosed Bat
  Malacoptila panamensis Lafresnaye, 1847 -- valid -- White-whiskered Puffbird, Buco barbón
  Manacus candei (Parzudaki, 1841) -- valid -- White-collared Manakin, Manaquín cuello blanco
  Manolepis putnami (Jan, 1863) -- valid -- Culebra cabeza surcada, Ridgehead Snake
  Marmosa canescens (J. A. Allen, 1893) -- invalid -- Tlacuache-ratón gris
  Marmosa mexicana Merriam, 1897 -- valid -- Tlacuache-ratón mexicano, Mexican Mouse Opossum
  Masticophis anthonyi (Stejneger, 1901) -- invalid -- Culebra-chirriadora de Isla Clarion
  Masticophis aurigulus (Cope, 1861) -- invalid -- Culebra-chirriadora de Baja California
  Masticophis bilineatus Jan, 1863 -- invalid -- Sonoran Whipsnake, Culebra-chirriadora sonorense
  Masticophis flagellum (Shaw, 1802) -- invalid -- Coachwhip, Culebra-chirriadora común
  Masticophis lateralis (Hallowell, 1853) -- invalid -- Striped Racer, Culebra-chirriadora rayada
  Masticophis mentovarius (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- invalid -- Culebra-chirriadora neotropical
  Masticophis taeniatus (Hallowell, 1852) -- invalid -- Striped Whipsnake, Culebra-chirriadora adornada
  Megaptera novaeangliae (Borowski, 1781) -- valid -- Humpback Whale, rorqual à bosse, Ballena jorobada
  Megarynchus pitangua (Linnaeus, 1766) -- valid -- Boat-billed Flycatcher, Luis pico grueso
  Megascops barbarus (P. L. Sclater & Salvin, 1868) -- valid -- Bearded Screech-Owl, Tecolote barbudo, Bearded Screech Owl
  Megascops kennicottii (D. G. Elliot, 1867) -- valid -- Tecolote occidental, Western Screech-Owl, Western Screech Owl
  Megascops trichopsis (Wagler, 1832) -- valid -- Tecolote rítmico, Whiskered Screech-Owl, Whiskered Screech Owl
  Melanerpes aurifrons (Wagler, 1829) -- valid -- Golden-fronted Woodpecker, Carpintero cheje
  Melanerpes chrysogenys (Vigors, 1839) -- valid -- Carpintero enmascarado, Golden-cheeked Woodpecker
  Melanerpes formicivorus (Swainson, 1827) -- valid -- Acorn Woodpecker, Carpintero bellotero
  Melanerpes hypopolius (Wagler, 1829) -- valid -- Carpintero pecho gris, Grey-breasted Woodpecker, Gray-breasted Woodpecker
  Melanerpes lewis (G. R. Gray, 1849) -- valid -- Lewis' Woodpecker, Carpintero de Lewis, Lewis's Woodpecker
  Melanerpes pucherani (Malherbe, 1849) -- valid -- Carpintero cara negra, Black-cheeked Woodpecker
  Melanerpes pygmaeus (Ridgway, 1885) -- valid -- Carpintero yucateco, Yucatan Woodpecker
  Melanerpes uropygialis (S. F. Baird, 1854) -- valid -- Gila Woodpecker, Carpintero del desierto
  Melanitta fusca (Linnaeus, 1758) -- valid -- Velvet Scoter, Negreta ala blanca, Macreuse brune, Negrón especulado, negrola-d'asa-branca, White-winged Scoter
  Melanitta nigra (Linnaeus, 1758) -- valid -- Negreta negra, Black Scoter, Common Scoter, Macreuse noire, Negrón común, negrola
  Melanitta perspicillata (Linnaeus, 1758) -- valid -- Negreta nuca blanca, Surf Scoter, Macreuse à front blanc, Negrón careto, negrola-de-lunetas
  Melanoptila glabrirostris P. L. Sclater, 1858 -- valid -- Maullador negro, Black Catbird
  Melanotis caerulescens (Swainson, 1827) -- valid -- Mulato azul, Blue Mockingbird
  Melanotis hypoleucus Hartlaub, 1852 -- valid -- Mulato pecho blanco, Blue-and-white Mockingbird
  Meleagris gallopavo Linnaeus, 1758 -- valid -- Guajolote gallipavo, peru-bravo, Guajolote norteño, Wild Turkey, dindon sauvage
  Melospiza georgiana (Latham, 1790) -- valid -- Chingolo pantanero, tico-tico-dos-pântanos, Swamp Sparrow, bruant des marais, Gorrión pantanero
  Melospiza lincolnii (Audubon, 1834) -- valid -- Chingolo de Lincoln, tico-tico-de-lincoln, Gorrión de Lincoln, Lincoln's Sparrow, bruant de Lincoln
  Melospiza melodia (A. Wilson, 1810) -- valid -- Chingolo cantor, tico-tico-musical, Gorrión cantor, Song Sparrow, bruant chanteur
  Melozone biarcuatum (Prévost & Des Murs, 1842) -- invalid -- Rascador patilludo
  Melozone kieneri (Bonaparte, 1850) -- valid -- Rascador nuca rufa, Rusty-crowned Ground Sparrow, Rusty-crowned Ground-Sparrow, Tohi de Kiener, Toquí nuquirrufo, Rusty-crowned Ground-sparrow
  Melozone leucotis Cabanis, 1861 -- valid -- Rascador oreja blanca, White-eared Ground Sparrow, White-eared Ground-Sparrow, Tohi oreillard, Toquí orejiblanco, White-eared Ground-sparrow
  Mephitis macroura Lichtenstein, 1832 -- valid -- Hooded Skunk, Zorrillo-listado del sur
  Mephitis mephitis (Schreber, 1776) -- valid -- Striped Skunk, mouffette rayée, Zorrillo-listado del norte
  Mergus merganser Linnaeus, 1758 -- valid -- Mergo mayor, Common Merganser, Grand Harle, Serreta grande, merganso-grande, Goosander
  Mergus serrator Linnaeus, 1758 -- valid -- Mergo copetón, Red-breasted Merganser, Harle huppé, Serreta mediana, merganso-de-poupa
  Mesaspis antauges (Cope, 1866) -- invalid -- Lagarto escorpión de Monte Orizaba, Mount Orizaba Alligator Lizard
  Mesaspis juarezi (Karges and Wright, 1987) -- invalid -- Lagarto escorpión de Sierra de Juárez, Sierra Juarez Alligator Lizard
  Mesaspis moreleti (Bocourt, 1871) -- invalid -- Lagarto escorpión de Morelet
  Mesaspis viridiflava (Bocourt, 1873) -- invalid -- Lagarto escorpión enano, Dwarf Alligator Lizard
  Mesoplodon carlhubbsi Moore, 1963 -- valid -- arch-beaked whale, archbeaked whale, Hubbs' Beaked Whale, Hubbs's Beaked Whale, Ballena-picuda de Hubb
  Mesoplodon densirostris (Blainville, 1817) -- valid -- dense-beaked whale, Blainville's Beaked Whale, densebeak whale, Ballena-picuda de Blainsville
  Mesoplodon ginkgodens Nishiwaki and Kamiya, 1958 -- valid -- ginkgo-toothed whale, Ginkgo-toothed Beaked Whale, Ballena-picuda japonesa
  Mesoplodon peruvianus Reyes, Mead and Van Waerebeek, 1991 -- valid -- Peruvian beaked whale, Ballena-picuda peruana, Pygmy Beaked Whale
  Metachirus nudicaudatus (É. Geoffroy Saint-Hilaire, 1803) -- valid -- Tlacuache-cuatrojos café, Brown Four-eyed Opossum
  Micrastur ruficollis (Vieillot, 1817) -- valid -- Barred Forest Falcon, Halcón-selvático barrado, Carnifex barré, Barred Forest-Falcon, Halcón montés agavilanado, falcão-caburé
  Micrastur semitorquatus (Vieillot, 1817) -- valid -- Collared Forest Falcon, Halcón-selvático de collar, Carnifex à collier, Collared Forest-Falcon, Halcón montés collarejo, falcão-relógio
  Micrathene whitneyi (J. G. Cooper, 1861) -- valid -- Elf Owl, Tecolote enano
  Microcerculus philomela (Salvin, 1861) -- valid -- Chivirín ruiseñor, Nightingale Wren, Northern Nightingale-Wren
  Microrhopias quixensis (Cornalia, 1849) -- valid -- Hormiguero ala punteada, Dot-winged Antwren
  Microtus californicus (Peale, 1848) -- valid -- Amargosa Vole, Meteoro de California, California Vole
  Microtus mexicanus (Saussure, 1861) -- valid -- Meteoro mexicano, Mexican Vole
  Microtus pennsylvanicus (Ord, 1815) -- valid -- campagnol des champs, Meteoro de prado, Meadow Vole
  Micruroides euryxanthus (Kennicott, 1860) -- valid -- Sonoran Coralsnake, Serpiente-coralillo sonorense, Western Coral Snake
  Micrurus bogerti Roze, 1967 -- valid -- Serpiente-coralillo de Bogert, Bogert's Coral Snake
  Micrurus browni K. P. Schmidt and H. M. Smith, 1943 -- valid -- Serpiente-coralillo de Brown, Brown's Coral Snake
  Micrurus diastema (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Serpiente-coralillo variable, Variable Coral Snake, Diastema Coral Snake
  Micrurus distans (Kennicott, 1860) -- valid -- Serpiente-coralillo del oeste mexicano, West Mexican Coral Snake
  Micrurus elegans (Jan, 1858) -- valid -- Serpiente-coralillo elegante, Elegant Coral Snake
  Micrurus ephippifer (Cope, 1886) -- valid -- Serpiente-coralillo oaxaqueña, Oaxacan Coral Snake
  Micrurus fulvius (Linnaeus, 1766) -- valid -- Northern Coral Snake, Harlequin Coralsnake, Serpiente-coralillo arlequín, Eastern Coral Snake
  Micrurus laticollaris (W. C. H. Peters, 1870) -- valid -- Serpiente-coralillo del Balsas, Balsas Coral Snake
  Micrurus latifasciatus K. P. Schmidt, 1933 -- valid -- Serpiente-coralillo franjas anchas, Broad-ringed Coral Snake
  Micrurus limbatus Fraser, 1964 -- valid -- Serpiente-coralillo de Los Tuxtlas, Tuxtlan Coral Snake
  Micrurus nebularis Roze, 1989 -- valid -- Serpiente-coralillo de niebla, Cloud Forest Coral Snake
  Micrurus nigrocinctus (Girard, 1854) -- valid -- Serpiente-coralillo centroamericana, Central American Coral Snake
  Micrurus proximans H. M. Smith and Chrapliwy, 1958 -- valid -- Serpiente-coralillo nayarita, Nayarit Coral Snake
  Mimodes graysoni (Lawrence, 1871) -- invalid -- Centzontle de Socorro, Socorro Mockingbird
  Mimus gilvus (Vieillot, 1808) -- valid -- Centzontle tropical, Tropical Mockingbird
  Mimus graysoni (Lawrence, 1871) -- valid -- Socorro Mockingbird, Centzontle de Socorro
  Mimus polyglottos (Linnaeus, 1758) -- valid -- Centzontle norteño, Northern Mockingbird, moqueur polyglotte
  Mionectes oleagineus (Lichtenstein, 1823) -- valid -- Ochre-bellied Flycatcher, Mosquero ocrillo
  Mirounga angustirostris (Gill, 1866) -- valid -- Northern Elephant Seal, northern sea elephant, Elefante-marino norteño
  Mitrephanes phaeocercus (P. L. Sclater, 1859) -- valid -- Tufted Flycatcher, Mosquero copetón, Northern Tufted Flycatcher
  Mniotilta varia (Linnaeus, 1766) -- valid -- Chipe trepador, Black-and-white Warbler, Paruline noir et blanc
  Molossus molossus (Pallas, 1766) -- valid -- Pallas' Free-tailed Bat, Murciélago-mastín de Pallas, Pallas's Mastiff Bat
  Molothrus aeneus (Wagler, 1829) -- valid -- Bronzed Cowbird, Tordo ojo rojo
  Molothrus ater (Boddaert, 1783) -- valid -- Tordo cabeza café, Brown-headed Cowbird, vacher à tête brune
  Momotus mexicanus Swainson, 1827 -- valid -- Momoto corona café, Russet-crowned Motmot, Momoto mexicano, Motmot à tête rousse
  Momotus momota (Linnaeus, 1766) -- valid -- Momoto corona azul, Blue-crowned Motmot, Amazonian Motmot, udu, Momoto amazónico, Motmot houtouc
  Monachus tropicalis (Gray, 1850) -- invalid -- Caribbean Monk Seal, West Indian monk seal, Foca-monje del Caribe
  Mormoops megalophylla (Peters, 1864) -- valid -- Ghost-faced Bat, Murciélago-barba arrugada norteño, Peters's Ghost-faced Bat
  Morococcyx erythropygus (Lesson, 1842) -- valid -- Cuclillo terrestre, Lesser Ground Cuckoo, Lesser Ground-Cuckoo
  Morphnus guianensis (Daudin, 1800) -- valid -- Águila crestada, Crested Eagle, Harpie huppée
  Morus bassanus (Linnaeus, 1758) -- valid -- Northern Gannet, Bobo norteño, Fou de Bassan
  Motacilla alba Linnaeus, 1758 -- valid -- Lavandera blanca, White Wagtail
  Mustela frenata Lichtenstein, 1831 -- valid -- Long-tailed Weasel, belette à longue queue, Comadreja cola larga
  Myadestes occidentalis Stejneger, 1882 -- valid -- Clarín jilguero, Brown-backed Solitaire
  Myadestes townsendi (Audubon, 1838) -- valid -- Clarín norteño, Townsend's Solitaire, solitaire de Townsend
  Myadestes unicolor P. L. Sclater, 1857 -- valid -- Clarín unicolor, Slate-colored Solitaire
  Mycteria americana Linnaeus, 1758 -- valid -- Wood Stork, Cigüeña americana, Tantale d'Amérique
  Myiarchus cinerascens (Lawrence, 1851) -- valid -- Papamoscas cenizo, Ash-throated Flycatcher, tyran à gorge cendrée
  Myiarchus crinitus (Linnaeus, 1758) -- valid -- Papamoscas viajero, Great Crested Flycatcher, tyran huppé
  Myiarchus nuttingi Ridgway, 1882 -- valid -- Nutting's Flycatcher, Papamoscas de Nutting
  Myiarchus tuberculifer (Orbigny & Lafresnaye, 1837) -- valid -- Dusky-capped Flycatcher, Papamoscas triste
  Myiarchus tyrannulus (Statius Muller, 1776) -- valid -- Brown-crested Flycatcher, Papamoscas tirano
  Myiarchus yucatanensis Lawrence, 1871 -- valid -- Yucatan Flycatcher, Papamoscas yucateco
  Myioborus miniatus (Swainson, 1827) -- valid -- Slate-throated Redstart, Chipe de montaña, Paruline ardoisée, Slate-throated Whitestart
  Myioborus pictus (Swainson, 1829) -- valid -- Painted Redstart, Chipe ala blanca, Painted Whitestart, Paruline à ailes blanches
  Myiodynastes luteiventris P. L. Sclater, 1859 -- valid -- Sulphur-bellied Flycatcher, Papamoscas atigrado
  Myiodynastes maculatus (Statius Muller, 1776) -- valid -- Streaked Flycatcher, Papamoscas rayado
  Myiopagis viridicata (Vieillot, 1817) -- valid -- Greenish Elaenia, Elenia verdosa
  Myiozetetes similis (Spix, 1825) -- valid -- Social Flycatcher, Luis gregario
  Myotis auriculus Baker and Stains, 1955 -- valid -- Miotis orejudo, Southwestern Myotis
  Myotis californicus (Audubon and Bachman, 1842) -- valid -- Miotis californiano, California Myotis, Californian Myotis
  Myotis ciliolabrum (Merriam, 1886) -- valid -- western small-footed bat, Miotis cara negra, Western Small-footed Myotis, Small-footed Myotis
  Myotis evotis (H. Allen, 1864) -- valid -- Miotis oreja larga, Long-eared Myotis, Western Long-eared Bat
  Myotis fortidens Miller and G. M. Allen, 1928 -- valid -- Miotis canelo, Cinnamon Myotis
  Myotis lucifugus (Le Conte, 1831) -- valid -- Little Brown Bat, Miotis norteamericano, petite chauve-souris brune, Little Brown Myotis
  Myotis thysanodes Miller, 1897 -- valid -- Miotis bordado, Fringed Myotis
  Myotis velifer (J. A. Allen, 1890) -- valid -- Miotis mexicano, Cave Myotis
  Myotis volans (H. Allen, 1866) -- valid -- Miotis pata larga, Long-legged Myotis
  Myotis yumanensis (H. Allen, 1864) -- valid -- Miotis de Yuma, Yuma Myotis
  Myrmotherula schisticolor (Lawrence, 1865) -- valid -- Hormiguero apizarrado, Slaty Antwren
  Nannus troglodytes (Linnaeus, 1758) -- invalid -- Winter Wren, troglodyte mignon, Chivirín chochín
  Nasua narica (Linnaeus, 1766) -- valid -- White-nosed Coati, Coatí norteño
  Neotoma albigula Hartley, 1894 -- valid -- Rata-cambalachera garganta blanca, White-throated Woodrat
  Neotoma devia Goldman, 1927 -- valid -- Rata-cambalachera de Coronado, Arizona Woodrat
  Neotoma fuscipes Baird, 1857 -- valid -- Rata-cambalachera patas oscuras, Dusky-footed Woodrat
  Neotoma lepida Thomas, 1893 -- valid -- Rata-cambalachera desértica, Desert Woodrat
  Neotoma mexicana Baird, 1855 -- valid -- Rata-cambalachera mexicana, Mexican Woodrat
  Neotoma micropus Baird, 1855 -- valid -- Rata-cambalachera de pradera, Southern Plains Woodrat
  Nerodia erythrogaster (Forster in Bossu, 1771) -- valid -- Plain-bellied Water Snake, Culebra-de agua vientre claro, Plainbelly Water Snake, Plain-bellied Watersnake, Red-bellied Water Snake, Redbelly Water Snake
  Nerodia melanogaster (Peters, 1864) -- invalid -- Culebra-de agua vientre negro
  Nerodia rhombifer (Hallowell, 1852) -- valid -- Diamondback Water Snake, Culebra-de agua de diamantes, Diamond-backed Watersnake
  Nerodia rufipunctatus (Cope, 1875) -- invalid -- Culebra-de agua cabeza angosta
  Ninia diademata Baird and Girard, 1853 -- valid -- Culebra-de cafetal de collar, Veracruz Ringneck Coffee Snake
  Ninia sebae (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Culebra-de cafetal espalda roja, Redback Coffee Snake
  Noctilio leporinus (Linnaeus, 1758) -- valid -- Murciélago-pescador mayor, Greater Bulldog Bat
  Notharchus macrorhynchos (J. F. Gmelin, 1788) -- valid -- White-necked Puffbird, Buco de collar, Guianan Puffbird
  Notiochelidon pileata (Gould, 1858) -- valid -- Golondrina gorra negra, Black-capped Swallow
  Notiosorex crawfordi (Coues, 1877) -- valid -- gray shrew, Desert Shrew, Musaraña-desértica norteña, Crawford's Gray Shrew
  Notophthalmus meridionalis (Cope, 1880) -- valid -- Tritón manchas negras, Black-spotted Newt
  Nototriton adelos Papenfuss and Wake, 1987 -- invalid -- Salamandra de Sierra de Juárez
  Nototriton alvarezdeltoroi Papenfuss and Wake, 1987 -- invalid -- Salamandra de Álvarez del Toro
  Nucifraga columbiana (A. Wilson, 1811) -- valid -- Clark's Nutcracker, Cascanueces americano
  Numenius americanus Bechstein, 1812 -- valid -- Zarapito pico largo, Long-billed Curlew, Courlis à long bec, Zarapito americano, maçarico-bicudo
  Numenius borealis (J. R. Forster, 1772) -- valid -- Zarapito boreal, Eskimo Curlew, Courlis esquimau, Zarapito esquimal, maçarico-esquimó
  Numenius phaeopus (Linnaeus, 1758) -- valid -- Zarapito trinador, Whimbrel, Courlis corlieu, Eurasian Whimbrel, maçarico-galego
  Nyctanassa violacea (Linnaeus, 1758) -- valid -- Yellow-crowned Night-Heron, Pedrete corona clara, Yellow-crowned Night Heron, Bihoreau violacé
  Nyctanolis pernix Elias and Wake, 1983 -- valid -- Salamandra-patas largas ágil
  Nyctibius grandis (J. F. Gmelin, 1789) -- valid -- Bienparado mayor, Great Potoo
  Nyctibius griseus (J. F. Gmelin, 1789) -- valid -- Common Potoo, Bienparado norteño
  Nycticeius humeralis (Rafinesque, 1818) -- valid -- Murciélago-crepuscular americano, Evening Bat, North American Evening Bat
  Nycticorax nycticorax (Linnaeus, 1758) -- valid -- Pedrete corona negra, Black-crowned Night Heron, Black-crowned Night-Heron, Bihoreau gris
  Nyctidromus albicollis (J. F. Gmelin, 1789) -- valid -- Common Pauraque, Chotacabras pauraque, Pauraque
  Nyctinomops femorosaccus (Merriam, 1889) -- valid -- Murciélago-cola suelta de bolsa, Pocketed Free-tailed Bat
  Nyctinomops macrotis (Gray, 1840) -- valid -- Murciélago-cola suelta mayor, Big Free-tailed Bat
  Nyctiphrynus mcleodii (Brewster, 1888) -- valid -- Tapacamino prío, Eared Poorwill
  Nyctiphrynus yucatanicus (Hartert, 1892) -- valid -- Tapacamino yucateco, Yucatan Poorwill
  Oceanites oceanicus (Kuhl, 1820) -- valid -- Wilson's Storm Petrel, Wilson's Storm-Petrel, Paíño de Wilson, Océanite de Wilson
  Oceanodroma castro (Harcourt, 1851) -- valid -- Paíño de Harcourt, Band-rumped Storm Petrel, Océanite de Castro, Band-rumped Storm-Petrel
  Oceanodroma homochroa (Coues, 1864) -- valid -- Paíño cenizo, Ashy Storm Petrel, Ashy Storm-Petrel, Océanite cendré
  Oceanodroma leucorhoa (Vieillot, 1818) -- valid -- Paíño de Leach, Leach's Storm-Petrel, Leach's Storm Petrel, Océanite cul-blanc
  Oceanodroma macrodactyla W. E. Bryant, 1887 -- valid -- Paíño de Guadalupe, Guadalupe Storm-Petrel, Océanite de Guadalupe
  Oceanodroma melania (Bonaparte, 1854) -- valid -- Paíño negro, Black Storm Petrel, Océanite noir, Black Storm-Petrel
  Oceanodroma microsoma (Coues, 1864) -- valid -- Least Storm-Petrel, Paíño mínimo, Océanite minute, Least Storm Petrel
  Oceanodroma tethys (Bonaparte, 1852) -- valid -- Wedge-rumped Storm-Petrel, Paíño de Galápagos, Océanite téthys, Wedge-rumped Storm Petrel
  Odocoileus hemionus (Rafinesque, 1817) -- valid -- mule deer, Venado bura, Mule Deer
  Odocoileus virginianus (Zimmermann, 1780) -- valid -- white-tailed deer, Venado cola blanca, cerf de Virginie, White-tailed Deer
  Odontophorus guttatus (Gould, 1838) -- valid -- Tocro tacheté, Corcovado goteado, corcovado-pintado, Spotted Wood Quail, Codorniz bolonchaco, Spotted Wood-Quail
  Oedipina elongata (Schmidt, 1936) -- valid -- Salamandra-lombriz centroamericana
  Oenanthe oenanthe (Linnaeus, 1758) -- valid -- Collalba norteña, Northern Wheatear, traquet motteux
  Ololygon staufferi (Cope, 1865) -- invalid -- Rana-de árbol de Stauffer
  Oncostoma cinereigulare (P. L. Sclater, 1857) -- valid -- Northern Bentbill, Mosquero pico curvo
  Onychomys arenicola Mearns, 1896 -- valid -- Mearns's Grasshopper Mouse, Mearns' Grasshopper Mouse, Ratón-saltamontes arenero, Chihuahuan Grasshopper Mouse
  Onychomys leucogaster (Wied-Neuwied, 1841) -- valid -- Ratón-saltamontes norteño, Northern Grasshopper Mouse
  Onychomys torridus (Coues, 1874) -- valid -- Ratón-saltamontes sureño, Southern Grasshopper Mouse
  Onychorhynchus coronatus (Statius Muller, 1776) -- valid -- Royal Flycatcher, Mosquero real, Amazonian Royal Flycatcher
  Opheodrys aestivus (Linnaeus, 1766) -- valid -- Rough Green Snake, Rough Greensnake, Culebra-verde rugosa
  Opheodrys vernalis (Harlan, 1827) -- valid -- Smooth Greensnake, Culebra-verde lisa, Smooth Green Snake
  Ophisaurus ceroni Holman, 1965 -- valid -- Lagarto de cristal de Ceron, Ceron's Glass Lizard
  Ophisaurus incomptus McConkey, 1955 -- valid -- Lagarto de cristal cuello simple, Plainneck Glass Lizard
  Oporornis formosus (A. Wilson, 1811) -- invalid -- Chipe patilludo, Kentucky Warbler, paruline du Kentucky
  Oporornis philadelphia (A. Wilson, 1810) -- invalid -- Chipe enlutado, Mourning Warbler, paruline triste
  Oporornis tolmiei (J. K. Townsend, 1839) -- invalid -- MacGillivray's Warbler, Chipe de Tolmie
  Orcinus orca (Linnaeus, 1758) -- valid -- Killer Whale, orca, Orca común, épaulard
  Oreophasis derbianus G. R. Gray, 1844 -- valid -- Oréophase cornu, Pavón cornudo, jacu-chifrudo, Horned Guan, Pavón
  Oreortyx pictus (Douglas, 1829) -- valid -- Colin des montagnes, Colín serrano, colim-serrano, Codorniz de montaña, Mountain Quail
  Oreoscoptes montanus (J. K. Townsend, 1837) -- valid -- Sage Thrasher, Cuitlacoche de chías
  Oriturus superciliosus (Swainson, 1838) -- valid -- Zacatonero rayado, Striped Sparrow, Bruant rayé, Chingolo rayado
  Ornithion semiflavum (P. L. Sclater & Salvin, 1860) -- valid -- Yellow-bellied Tyrannulet, Mosquero ceja blanca
  Ortalis leucogastra (Gould, 1843) -- valid -- Ortalide à ventre blanc, Chachalaca ventriblanca, aracuã-de-barriga-branca, White-bellied Chachalaca, Chachalaca vientre blanco
  Ortalis poliocephala (Wagler, 1830) -- valid -- Ortalide de Wagler, Chachalaca pechigrís, aracuã-de-peito-cinzento, West Mexican Chachalaca, Chachalaca pálida
  Ortalis vetula (Wagler, 1830) -- valid -- Ortalide chacamel, Chachalaca norteña, aracuã-de-asas-azuis, Plain Chachalaca, Chachalaca vetula
  Ortalis wagleri G. R. Gray, 1867 -- valid -- Ortalide à ventre marron, Chachalaca ventricastaña, aracuã-de-barriga-ruiva, Rufous-bellied Chachalaca, Chachalaca vientre castaño
  Oryzomys couesi (Alston, 1877) -- valid -- Coues's Rice Rat, Coues' Rice Rat, Rata-arrocera de Coues, Coues' Oryzomys
  Oryzomys palustris (Harlan, 1837) -- valid -- Rata-arrocera de pantano, Marsh Rice Rat, Marsh Oryzomys
  Otus asio (Linnaeus, 1758) -- invalid -- Tecolote oriental, Eastern Screech-Owl, petit-duc maculé
  Otus barbarus (P. L. Sclater & Salvin, 1868) -- invalid -- Tecolote barbudo
  Otus flammeolus (Kaup, 1852) -- invalid -- Flammulated Owl, Tecolote ojo oscuro
  Otus kennicottii (D. G. Elliot, 1867) -- invalid -- Tecolote occidental, Western Screech-Owl
  Otus trichopsis (Wagler, 1832) -- invalid -- Whiskered Screech-Owl, Tecolote rítmico
  Ovis canadensis Shaw, 1804 -- valid -- bighorn sheep, Borrego cimarrón, Bighorn Sheep
  Oxybelis aeneus (Wagler, 1824) -- valid -- Brown Vine Snake, Brown Vinesnake, Culebra-bejuquilla mexicana, Mexican Vine Snake
  Oxybelis fulgidus (Daudin, 1803) -- valid -- Culebra-bejuquilla verde
  Oxyrhopus petola (Linnaeus, 1758) -- invalid -- Calico Snake, Culebra-encendida de Cálico
  Oxyura dominica (Linnaeus, 1766) -- invalid -- Masked Duck, Pato enmascarado
  Oxyura jamaicensis (J. F. Gmelin, 1789) -- valid -- Pato tepalcate, Ruddy Duck, Érismature rousse, Malvasía canela, pato-rabo-alçado-americano
  Pachymedusa dacnicolor (Cope, 1864) -- invalid -- Rana-de árbol mexicana
  Pachyramphus aglaiae (Lafresnaye, 1839) -- valid -- Rose-throated Becard, Mosquero-cabezón degollado
  Pachyramphus cinnamomeus Lawrence, 1861 -- valid -- Cinnamon Becard
  Pachyramphus major (Cabanis, 1847) -- valid -- Gray-collared Becard, Mosquero-cabezón mexicano, Grey-collared Becard
  Pachyramphus polychopterus (Vieillot, 1818) -- valid -- White-winged Becard
  Pandion haliaetus (Linnaeus, 1758) -- valid -- Gavilán pescador, Osprey, Balbuzard pêcheur, Western Osprey
  Panthera onca (Linnaeus, 1758) -- valid -- Jaguar, Jaguar
  Panyptila cayennensis (J. F. Gmelin, 1789) -- valid -- Vencejo-tijereta menor, Lesser Swallow-tailed Swift
  Panyptila sanctihieronymi Salvin, 1863 -- valid -- Vencejo-tijereta mayor, Great Swallow-tailed Swift
  Parabuteo unicinctus (Temminck, 1824) -- valid -- Aguililla rojinegra, Harris' Hawk, Harris's Hawk, Buse de Harris
  Pardirallus maculatus (Boddaert, 1783) -- valid -- Spotted Rail, Rascón pinto
  Parula americana (Linnaeus, 1758) -- invalid -- Parula norteña, Northern Parula, paruline à collier
  Parula pitiayumi (Vieillot, 1817) -- invalid -- Parula tropical, Tropical Parula
  Parula superciliosa (Hartlaub, 1844) -- invalid -- Parula ceja blanca, Crescent-chested Warbler
  Parus bicolor Linnaeus, 1766 -- invalid -- Tufted Titmouse, Carbonero cresta negra
  Parus gambeli Ridgway, 1886 -- invalid -- Mountain Chickadee, Carbonero ceja blanca
  Parus inornatus Gambel, 1845 -- invalid -- Plain Titmouse, Carbonero sencillo
  Parus sclateri O. Kleinschmidt, 1897 -- invalid -- Mexican Chickadee, Carbonero mexicano
  Parus wollweberi (Bonaparte, 1850) -- invalid -- Bridled Titmouse, Carbonero embridado
  Parvimolge townsendi (Dunn, 1922) -- valid -- Salamandra-enana de Townsend
  Passer domesticus (Linnaeus, 1758) -- valid -- Gorrión casero, House Sparrow, moineau domestique
  Passerculus sandwichensis (J. F. Gmelin, 1789) -- valid -- Chingolo sabanero, tico-tico-dos-prados, Savannah Sparrow, Gorrión sabanero, bruant des prés
  Passerella iliaca (Merrem, 1786) -- valid -- Chingolo zorruno, tico-tico-raposino, Red Fox-sparrow, Fox Sparrow, bruant fauve, Gorrión rascador, Red Fox Sparrow
  Passerina amoena (Say, 1822) -- valid -- Lazuli Bunting, Colorín lázuli
  Passerina ciris (Linnaeus, 1758) -- valid -- Colorín sietecolores, Painted Bunting
  Passerina cyanea (Linnaeus, 1766) -- valid -- Indigo Bunting, passerin indigo, Colorín azul
  Passerina leclancherii Lafresnaye, 1840 -- valid -- Colorín pecho naranja, Orange-breasted Bunting
  Passerina rositae (Lawrence, 1874) -- valid -- Colorín azulrosa, Rose-bellied Bunting
  Passerina versicolor (Bonaparte, 1838) -- valid -- Varied Bunting, Colorín morado
  Pelamis platurus (Linnaeus, 1766) -- invalid -- Yellow-bellied Sea Snake, Yellow-bellied Seasnake, Serpiente-marina pelágica
  Pelecanus erythrorhynchos Gmelin, 1789 -- valid -- Pelícano blanco, American White Pelican, Pélican d'Amérique
  Pelecanus occidentalis Linnaeus, 1766 -- valid -- Pelícano pardo, Brown Pelican, Pélican brun
  Penelope purpurascens Wagler, 1830 -- valid -- Pénélope panachée, jacu-de-crista, Crested Guan, Pava cojolita
  Penelopina nigra (Fraser, 1852) -- valid -- Pénélope pajuil, Pava pajuil, jacu-do-planalto, Highland Guan, Pajuil
  Peponocephala electra (Gray, 1846) -- valid -- Melon-headed Whale, Calderón, electra dolphin
  Perognathus amplus Osgood, 1900 -- valid -- Ratón-de abazones de Arizona, Arizona Pocket Mouse
  Perognathus flavescens Merriam, 1889 -- valid -- Ratón-de abazones de pradera, Plains Pocket Mouse
  Perognathus flavus Baird, 1855 -- valid -- Ratón-de abazones sedoso, Silky Pocket Mouse
  Perognathus longimembris (Coues, 1875) -- valid -- Ratón-de abazones menor, Little Pocket Mouse
  Perognathus merriami J. A. Allen, 1892 -- valid -- Ratón-de abazones de Merriam, Merriam's Pocket Mouse
  Peromyscus boylii (Baird, 1855) -- valid -- Ratón arbustero, Brush Mouse, Brush Deermouse
  Peromyscus californicus (Gambel, 1848) -- valid -- Ratón californiano, California Deermouse, California Mouse
  Peromyscus crinitus (Merriam, 1891) -- valid -- Ratón de cañada, Canyon Mouse, Canyon Deermouse
  Peromyscus difficilis (J. A. Allen, 1891) -- valid -- Zacatecan Deer Mouse, Ratón de roca, Southern Rock Deermouse, Rock Mouse
  Peromyscus eremicus (Baird, 1857) -- valid -- Ratón de cactus, Cactus Mouse, Cactus Deermouse
  Peromyscus gratus Merriam, 1898 -- valid -- Merriam's Piñon Mouse, Osgood's Mouse, Ratón de Tlalpan, Saxicoline Deermouse
  Peromyscus maniculatus (Wagner, 1845) -- valid -- Ratón norteamericano, souris sylvestre, Deer Mouse, North American Deermouse
  Peromyscus melanotis J. A. Allen and Chapman, 1897 -- valid -- Ratón orejas negras, Black-eared Deermouse, Black-eared Mouse
  Peromyscus merriami Mearns, 1896 -- valid -- Mesquite Mouse, Ratón de Merriam, Merriam's Mouse, Merriam's Deermouse
  Peromyscus nasutus (J. A. Allen, 1891) -- valid -- Northern Rock Mouse, Ratón de Nuevo Mexico, Rock Mouse, Northern Rock Deermouse
  Peromyscus pectoralis Osgood, 1904 -- valid -- Ratón tobillo blanco, White-ankled Deermouse, White-ankled Mouse
  Peromyscus truei (Shufeldt, 1885) -- valid -- piñon mouse, Pinyon Mouse, Ratón piñonero, Piñon Deermouse
  Petrosaurus mearnsi (Stejneger, 1894) -- valid -- Banded Rock Lizard, Lagartija-de piedra rayada
  Petrosaurus thalassinus (Cope, 1863) -- valid -- Lagartija-de piedra bajacaliforniana, Baja California Rock Lizard
  Peucedramus taeniatus (Du Bus de Gisignies, 1847) -- valid -- Olive Warbler, Ocotero enmascarado
  Phaeochroa cuvierii (Delattre & Bourcier, 1846) -- valid -- Fandanguero pecho escamoso, Scaly-breasted Hummingbird
  Phaethon aethereus Linnaeus, 1758 -- valid -- Rabijunco pico rojo, Phaéton à bec rouge, Red-billed Tropicbird
  Phaethon lepturus Daudin, 1802 -- valid -- Rabijunco cola blanca, Phaéton à bec jaune, White-tailed Tropicbird
  Phaethon rubricauda Boddaert, 1783 -- valid -- Rabijunco cola roja, Phaéton à brins rouges, Red-tailed Tropicbird
  Phaethornis longuemareus (R. Lesson, 1832) -- valid -- Little Hermit, Ermitaño enano
  Phaethornis superciliosus (Linnaeus, 1766) -- valid -- Eastern Long-tailed Hermit, Ermitaño cola larga, Long-tailed Hermit
  Phainopepla nitens (Swainson, 1838) -- valid -- Phainopepla, Capulinero negro
  Phalacrocorax auritus (Lesson, 1831) -- valid -- Cormorán orejudo, Double-crested Cormorant, Cormoran à aigrettes
  Phalacrocorax brasilianus (Gmelin, 1789) -- valid -- Cormorán oliváceo, Neotropic Cormorant, Cormoran vigua
  Phalacrocorax pelagicus Pallas, 1811 -- valid -- Pelagic Cormorant, Cormorán pelágico, Cormoran pélagique
  Phalacrocorax penicillatus (Brandt, 1837) -- valid -- Brandt's Cormorant, Cormorán de Brandt, Cormoran de Brandt
  Phalaenoptilus nuttallii (Audubon, 1844) -- valid -- Tapacamino tevíi, Common Poorwill
  Phalaropus fulicaria (Linnaeus, 1758) -- invalid -- Falaropo pico grueso, Red Phalarope, phalarope à bec large
  Phalaropus lobatus (Linnaeus, 1758) -- valid -- Red-necked Phalarope, Falaropo cuello rojo, Phalarope à bec étroit, Falaropo picofino, falaropo-de-bico-fino
  Phalaropus tricolor (Vieillot, 1819) -- valid -- Falaropo pico largo, Wilson's Phalarope, Phalarope de Wilson, Falaropo tricolor, pisa-n'água
  Pharomachrus mocinno La Llave, 1832 -- valid -- Resplendent Quetzal, Quetzal mesoamericano, quetzal-resplandecente, Quetzal guatemalteco, Quetzal resplendissant
  Phasianus colchicus Linnaeus, 1758 -- valid -- Faisan de Colchide, Faisán vulgar, faisão, Common Pheasant, Ring-necked Pheasant, faisan de chasse, Faisán de collar
  Pheucticus chrysopeplus (Vigors, 1832) -- valid -- Picogordo amarillo, Mexican Yellow Grosbeak, Yellow Grosbeak
  Pheucticus ludovicianus (Linnaeus, 1766) -- valid -- Picogordo pecho rosa, Rose-breasted Grosbeak, cardinal à poitrine rose
  Pheucticus melanocephalus (Swainson, 1827) -- valid -- Black-headed Grosbeak, Picogordo tigrillo
  Pheugopedius felix (P. L. Sclater, 1860) -- valid -- Happy Wren, Chivirín feliz
  Pheugopedius maculipectus (Lafresnaye, 1845) -- valid -- Spot-breasted Wren, Chivirín moteado
  Philander opossum (Linnaeus, 1758) -- valid -- Tlacuache-cuatrojos gris, Gray Four-eyed Opossum
  Philortyx fasciatus (Gould, 1844) -- valid -- Colin barré, Colín bandeado, colim-barrado, Banded Quail, Codorniz rayada
  Phoca vitulina Linnaeus, 1758 -- valid -- Harbor Seal, phoque commun, Foca común, common seal
  Phocoena sinus Norris and McFarland, 1958 -- valid -- cochito, Gulf of California harbor porpoise, Vaquita, Marsopa vaquita
  Phocoenoides dalli (True, 1885) -- valid -- True's Porpoise, Marsopa de Dall, Dall's Porpoise
  Phoenicopterus ruber Linnaeus, 1758 -- valid -- Flamenco americano, Greater Flamingo, flamant rose, Flamant des Caraïbes, American Flamingo
  Phrynohyas venulosa (Laurenti, 1768) -- invalid -- Veined Frog, Rana-de árbol lechosa
  Phrynosoma asio Cope, 1864 -- valid -- Lagartija-cornuda gigante, Giant Horned Lizard
  Phrynosoma braconnieri A. M. C. Duméril and Bocourt, 1870 -- valid -- Lagartija-cornuda cola corta, Short-tail Horned Lizard
  Phrynosoma cerroense Stejneger, 1893 -- valid -- Lagartija-cornuda de Isla Cedros, Cedros Island Horned Lizard
  Phrynosoma cornutum (Harlan, 1825) -- valid -- Texas Horned Lizard, Lagartija-cornuda texana
  Phrynosoma coronatum (Blainville, 1835) -- valid -- Coast Horned Lizard, Lagartija-cornuda de litoral
  Phrynosoma ditmarsi Stejneger, 1906 -- valid -- Lagartija-cornuda de roca, Rock Horned Lizard
  Phrynosoma mcallii (Hallowell, 1852) -- valid -- Flat-tailed Horned Lizard, Lagartija-cornuda cola plana, Flat-tail Horned Lizard
  Phrynosoma modestum Girard in Baird and Girard, 1852 -- valid -- Round-tailed Horned Lizard, Lagartija-cornuda cola redonda, Roundtail Horned Lizard
  Phrynosoma orbiculare (Linnaeus, 1758) -- valid -- Lagartija-cornuda de montaña, Mountain Horned Lizard
  Phrynosoma platyrhinos Girard in Baird and Girard, 1852 -- valid -- Desert Horned Lizard, Lagartija-cornuda de desierto
  Phrynosoma solare Gray, 1845 -- valid -- Regal Horned Lizard, Lagartija-cornuda real
  Phrynosoma taurus Bocourt in A. M. C. Duméril and Bocourt, 1870 -- valid -- Lagartija-cornuda toro o mexicana, Mexican Horned Lizard
  Phyllodactylus angelensis Dixon, 1966 -- valid -- Salamanquesa de Isla Ángel
  Phyllodactylus apricus Dixon, 1966 -- valid -- Salamanquesa de Las Ánimas
  Phyllodactylus bordai Taylor, 1942 -- valid -- Salamanquesa de Guerrero
  Phyllodactylus bugastrolepis Dixon, 1966 -- valid -- Salamanquesa de Isla Catalina
  Phyllodactylus davisi Dixon, 1964 -- valid -- Salamanquesa de Davis
  Phyllodactylus delcampoi Mosauer, 1936 -- valid -- Salamanquesa de Del Campo
  Phyllodactylus duellmani Dixon, 1960 -- valid -- Salamanquesa de Duellman
  Phyllodactylus homolepidurus H. Smith, 1935 -- valid -- Salamanquesa sonorense
  Phyllodactylus lanei H. Smith, 1935 -- valid -- Salamanquesa patas de res
  Phyllodactylus muralis Taylor, 1940 -- valid -- Salamanquesa oaxaqueña
  Phyllodactylus nocticolus Dixon, 1964 -- valid -- Peninsular Leaf-toed Gecko, Peninsula Leaf-toed Gecko, Salamanquesa insular
  Phyllodactylus partidus Dixon, 1966 -- valid -- Salamanquesa de partida norte
  Phyllodactylus paucituberculatus Dixon, 1960 -- valid -- Salamanquesa de río Marqués
  Phyllodactylus santacruzensis Dixon, 1966 -- valid -- Salamanquesa de Santa Cruz
  Phyllodactylus tinklei Dixon, 1966 -- valid -- Salamanquesa de Isla Rasa
  Phyllodactylus tuberculosus Wiegmann, 1834 -- valid -- Salamanquesa vientre amarillo
  Phyllodactylus unctus (Cope, 1863) -- valid -- Salamanquesa de San Lucas
  Phyllodactylus xanti Cope, 1863 -- valid -- Salamanquesa del Cabo, Xantus Leaf-toed Gecko
  Phyllorhynchus browni Stejneger, 1890 -- valid -- Saddled Leaf-nosed Snake, Culebra-nariz lanceolada ensillada, Saddled Leafnose Snake, Pima Leafnose Snake, Maricopa Leafnose Snake
  Phyllorhynchus decurtatus (Cope, 1868) -- valid -- Spotted Leaf-nosed Snake, Culebra-nariz lanceolada pinta, Spotted Leafnose Snake
  Physalaemus pustulosus (Cope, 1864) -- invalid -- Guayaquil Dwarf Frog, Rana tungara
  Piaya cayana (Linnaeus, 1766) -- valid -- Cuclillo canela, Squirrel Cuckoo
  Picoides nuttallii (Gambel, 1843) -- invalid -- Nuttall's Woodpecker, Carpintero californiano
  Picoides pubescens (Linnaeus, 1766) -- invalid -- Downy Woodpecker, pic mineur, Carpintero velloso-menor
  Picoides scalaris (Wagler, 1829) -- invalid -- Ladder-backed Woodpecker, Carpintero mexicano
  Picoides stricklandi (Malherbe, 1845) -- invalid -- Strickland's Woodpecker, Carpintero de Strickland
  Picoides villosus (Linnaeus, 1766) -- invalid -- Carpintero velloso-mayor, Hairy Woodpecker, pic chevelu
  Piculus auricularis (Salvin & Godman, 1889) -- invalid -- Carpintero corona gris, Grey-crowned Woodpecker, Gray-crowned Woodpecker
  Piculus rubiginosus (Swainson, 1820) -- invalid -- Carpintero oliváceo, Golden-olive Woodpecker
  Pionopsitta haematotis (P. L. Sclater & Salvin, 1860) -- invalid -- Brown-hooded Parrot, Loro cabeza oscura
  Pionus senilis (von Spix, 1824) -- valid -- White-crowned Parrot, Loro corona blanca, Pione à couronne blanche, Loro senil, curica-de-testa-branca
  Pipilo aberti S. F. Baird, 1852 -- invalid -- Abert's Towhee, Toquí enmascarado
  Pipilo albicollis P. L. Sclater, 1858 -- invalid -- Toquí oaxaqueño, White-throated Towhee
  Pipilo chlorurus (Audubon, 1839) -- valid -- Toquí coliverde, Toquí cola verde, Green-tailed Towhee, tohi à queue verte
  Pipilo crissalis (Vigors, 1839) -- invalid -- Toquí californiano, California Towhee
  Pipilo erythrophthalmus (Linnaeus, 1758) -- valid -- Toquí flanquirrufo, pipilo-d'olho-vermelho, Rufous-sided Towhee, Toquí pinto, Eastern Towhee, tohi à flancs roux
  Pipilo fuscus Swainson, 1827 -- invalid -- Brown Towhee, Toquí pardo, Canyon Towhee
  Pipilo ocai (Lawrence, 1865) -- valid -- Toquí de collar, Collared Towhee, Tohi à collier, Toquí acollarado
  Pipistrellus hesperus (H. Allen, 1864) -- invalid -- Pipistrelo del oeste americano, Western Pipistrelle
  Pipistrellus subflavus (F. Cuvier, 1832) -- invalid -- Pipistrelo del este americano, pipistrelle de l'est, Eastern Pipistrelle
  Pipra mentalis P. L. Sclater, 1857 -- valid -- Red-capped Manakin, Manaquín cabeza roja
  Piranga bidentata Swainson, 1827 -- valid -- Flame-colored Tanager, Tángara dorso rayado
  Piranga erythrocephala (Swainson, 1827) -- valid -- Tángara cabeza roja, Red-headed Tanager
  Piranga flava (Vieillot, 1822) -- valid -- Tángara encinera, Hepatic Tanager, Red Tanager
  Piranga leucoptera Trudeau, 1840 -- valid -- Tángara ala blanca, White-winged Tanager
  Piranga ludoviciana (A. Wilson, 1811) -- valid -- Western Tanager, tangara à tête rouge, Tángara capucha roja
  Piranga olivacea (J. F. Gmelin, 1789) -- valid -- Tángara escarlata, Scarlet Tanager, tangara écarlate
  Piranga roseogularis S. Cabot, 1846 -- valid -- Tángara yucateca, Rose-throated Tanager
  Piranga rubra (Linnaeus, 1758) -- valid -- Summer Tanager, tangara vermillon, Tángara roja
  Pitangus sulphuratus (Linnaeus, 1766) -- valid -- Great Kiskadee, Luis bienteveo
  Pituophis deppei (A. M. C. Duméril, 1853) -- valid -- Culebra-sorda mexicana, Mexican Bull Snake, Mexican Pine Snake
  Pituophis lineaticollis (Cope, 1861) -- valid -- Culebra-sorda centroamericana, Middle American Gopher Snake, Cincuate Bull Snake
  Pituophis melanoleucus (Daudin, 1803) -- valid -- Pine Snake, Pinesnake, Culebra-sorda toro, Eastern Pine Snake, Eastern Pinesnake
  Platyrinchus cancrominus P. L. Sclater & Salvin, 1860 -- valid -- Stub-tailed Spadebill, Mosquero pico chato
  Plecotus mexicanus (G. M. Allen, 1916) -- invalid -- Mexican big-eared bat, Murciélago-mula Mexicano
  Plectrohyla acanthodes Duellman and Campbell, 1992 -- valid -- Rana-dedos delgados espinosa
  Plectrohyla avia Stuart, 1952 -- valid -- Rana-dedos delgados mayor
  Plectrohyla guatemalensis Brocchi, 1877 -- valid -- Rana-dedos delgados de Guatemala
  Plectrohyla hartwegi Duellman, 1968 -- valid -- Rana-dedos delgados de Hartweg
  Plectrohyla ixil Stuart, 1942 -- valid -- Rana-dedos delgados ixil
  Plectrohyla lacertosa Bumzahem and Smith, 1954 -- valid -- Rana-dedos delgados ojona
  Plectrohyla matudai Hartweg, 1941 -- valid -- Rana-dedos delgados de Matuda
  Plectrohyla pycnochila Rabb, 1959 -- valid -- Rana-dedos delgados labios anchos
  Plectrohyla sagorum Hartweg, 1941 -- valid -- Rana-dedos delgados arcana
  Plegadis chihi (Vieillot, 1817) -- valid -- Ibis cara blanca, White-faced Ibis, Ibis à face blanche
  Plegadis falcinellus (Linnaeus, 1766) -- valid -- Ibis cara oscura, Glossy Ibis, Ibis falcinelle
  Pliocercus andrewsi H. M. Smith, 1942 -- invalid -- Culebra-imita coral de Andrew
  Pliocercus bicolor H. M. Smith, 1941 -- invalid -- Culebra-imita coral bicolor
  Pliocercus elapoides Cope, 1860 -- valid -- Culebra-imita coral común, Variegated False Coral Snake
  Pluvialis dominica (P. L. S. Müller, 1776) -- valid -- Lesser Golden-Plover, Chorlo dominico, American Golden-Plover, pluvier doré d'Amérique, American Golden Plover, Pluvier bronzé, Chorlito dorado americano, batuiruçu
  Pluvialis fulva (J. F. Gmelin, 1789) -- valid -- Chorlo fulvo, Pacific Golden-Plover, Pacific Golden Plover, Pluvier fauve, Chorlito dorado siberiano, tarambola-dourada-siberiana
  Pluvialis squatarola (Linnaeus, 1758) -- valid -- Chorlo gris, Black-bellied Plover, Grey Plover, Pluvier argenté, Chorlito gris, batuiruçu-de-axila-preta, tarambola-cinzenta
  Podiceps auritus (Linnaeus, 1758) -- valid -- Zambullidor cornudo, Grèbe esclavon, Horned Grebe
  Podiceps nigricollis C. L. Brehm, 1831 -- valid -- Zambullidor orejudo, Eared Grebe, Grèbe à cou noir, Black-necked Grebe
  Podilymbus podiceps (Linnaeus, 1758) -- valid -- Zambullidor pico grueso, Grèbe à bec bigarré, Pied-billed Grebe
  Polioptila albiloris P. L. Sclater & Salvin, 1860 -- valid -- Perlita pispirria, White-lored Gnatcatcher
  Polioptila caerulea (Linnaeus, 1766) -- valid -- Perlita azulgris, Blue-gray Gnatcatcher, gobemoucherons gris-bleu, Blue-grey Gnatcatcher
  Polioptila californica Brewster, 1881 -- valid -- Perlita californiana, California Gnatcatcher
  Polioptila melanura Lawrence, 1857 -- valid -- Perlita del desierto, Black-tailed Gnatcatcher
  Polioptila nigriceps S. F. Baird, 1864 -- valid -- Black-capped Gnatcatcher, Perlita sinaloense
  Polioptila plumbea (Gmelin, 1788) -- valid -- Perlita tropical, Tropical Gnatcatcher
  Pooecetes gramineus (J. F. Gmelin, 1789) -- valid -- Chingolo coliblanco, Gorrión cola blanca, Vesper Sparrow, bruant vespéral
  Porphyrula martinica (Linnaeus, 1766) -- invalid -- Gallineta morada, Purple Gallinule, talève violacée
  Porthidium dunni (Hartweg and Oliver, 1938) -- valid -- Nauyaca-nariz de cerdo oxaqueña, Dunn's Hognose Viper
  Porthidium hespere (Campbell, 1976) -- valid -- Nauyaca-nariz de cerdo de Tecomán, Western Hognose Viper
  Porthidium nasutum (Bocourt, 1868) -- valid -- Nauyaca-nariz de cerdo narigona, Hognosed Pit Viper
  Porthidium yucatanicum (H. M. Smith, 1941) -- valid -- Nauyaca-nariz de cerdo yucateca
  Porzana carolina (Linnaeus, 1758) -- valid -- Polluela sora, Sora, marouette de Caroline
  Porzana flaviventer (Boddaert, 1783) -- valid -- Yellow-breasted Crake, Polluela pecho amarillo
  Procellaria parkinsoni G. R. Gray, 1862 -- valid -- Petrel de Parkinson, Black Petrel, Parkinson's Petrel, Puffin de Parkinson
  Procyon lotor (Linnaeus, 1758) -- valid -- Raccoon, Mapache común, common raccoon, raton laveur, Northern Raccoon
  Progne chalybea (Gmelin, 1789) -- valid -- Gray-breasted Martin, Golondrina acerada, Grey-breasted Martin
  Progne sinaloae Nelson, 1898 -- valid -- Golondrina sinaloense, Sinaloa Martin
  Progne subis (Linnaeus, 1758) -- valid -- Golondrina azulnegra, Purple Martin, hirondelle noire
  Protonotaria citrea (Boddaert, 1783) -- valid -- Chipe dorado, Paruline orangée, Prothonotary Warbler
  Psaltriparus minimus (J. K. Townsend, 1837) -- valid -- Bushtit, Sastrecillo, American Bushtit
  Psarocolius wagleri (G. R. Gray, 1845) -- valid -- Oropéndola cabeza castaña, Chestnut-headed Oropendola
  Pseudacris cadaverina (Cope, 1866) -- valid -- Rana-de coro californiana, California Chorus Frog, California Treefrog
  Pseudacris regilla (Baird and Girard, 1852) -- valid -- Northern Pacific Treefrog, Rana-de coro del pacífico, Pacific Chorus Frog, Pacific Treefrog
  Pseudemys gorzugi Ward, 1984 -- valid -- Tortuga del Río Bravo, Rio Grande Cooter
  Pseudoeurycea altamontana (Taylor, 1939) -- valid -- Tlaconete morelense
  Pseudoeurycea anitae Bogert, 1967 -- valid -- Tlaconete de Anita
  Pseudoeurycea brunnata Bumzahem and Smith, 1955 -- valid -- Tlaconete café
  Pseudoeurycea cephalica (Cope, 1889) -- invalid -- Tlaconete regordete
  Pseudoeurycea cochranae (Taylor, 1943) -- valid -- Tlaconete de Cochran
  Pseudoeurycea conanti Bogert, 1967 -- valid -- Tlaconete de Conant
  Pseudoeurycea firscheini Shannon and Werler, 1955 -- valid -- Tlaconete de Firschein
  Pseudoeurycea galeanae (Taylor, 1941) -- invalid -- Tlaconete de Galeana
  Pseudoeurycea goebeli (Schmidt, 1936) -- valid -- Tlaconete de Goebel
  Pseudoeurycea juarezi Regal, 1966 -- valid -- Tlaconete de Sierra de Juárez
  Pseudoeurycea leprosa (Cope, 1869) -- valid -- Tlaconete leproso
  Pseudoeurycea longicauda Lynch, Wake and Yang, 1983 -- valid -- Tlaconete cola larga
  Pseudoeurycea melanomolga (Taylor, 1941) -- valid -- Tlaconete negro
  Pseudoeurycea mystax Bogert, 1967 -- valid -- Tlaconete bigotudo
  Pseudoeurycea nigromaculata (Taylor, 1941) -- valid -- Tlaconete manchas negras
  Pseudoeurycea parva Lynch and Wake, 1989 -- invalid -- Tlaconete enano
  Pseudoeurycea praecellens (Rabb, 1955) -- invalid -- Tlaconete fino
  Pseudoeurycea rex (Dunn, 1921) -- valid -- Tlaconete real
  Pseudoeurycea robertsi (Taylor, 1939) -- valid -- Tlaconete de Robert
  Pseudoeurycea saltator Lynch and Wake, 1989 -- valid -- Tlaconete saltarín
  Pseudoeurycea scandens Walker, 1955 -- invalid -- Tlaconete tamaulipeco
  Pseudoeurycea smithi (Taylor, 1939) -- valid -- Tlaconete de Smith
  Pseudoeurycea unguidentis (Taylor, 1941) -- valid -- Tlaconete diente espolón
  Pseudoeurycea werleri Darling and Smith, 1954 -- valid -- Tlaconete de Werler
  Pseudoficimia frontalis (Cope, 1864) -- valid -- Culebra ilamacoa, False Ficimia
  Pseudoleptodeira latifasciata (Günther, 1894) -- valid -- Culebra-ojo de gato-falsa cabeza roja, False Cat-eyed Snake
  Pseudorca crassidens (Owen, 1846) -- valid -- False Killer Whale, Orca-falsa
  Pseustes poecilonotus (Günther, 1858) -- invalid -- Culebra resoplona norteña
  Pternohyla dentata Smith, 1957 -- invalid -- Rana-de árbol de tierras altas
  Pternohyla fodiens Boulenger, 1882 -- invalid -- Lowland Burrowing Treefrog, Rana-de árbol de tierras bajas
  Pterodroma cervicalis (Salvin, 1891) -- valid -- Pétrel à col blanc, Petrel cuello blanco, White-necked Petrel
  Pterodroma cookii (G. R. Gray, 1843) -- valid -- Pétrel de Cook, Petrel de Cook, Cook's Petrel
  Pterodroma externa (Salvin, 1875) -- valid -- Petrel de Juan Fernández, Juan Fernandez Petrel, Pétrel de Juan Fernandez
  Pterodroma neglecta (Schlegel, 1863) -- valid -- Petrel de Kermadec, Kermadec Petrel, Pétrel des Kermadec
  Pterodroma nigripennis (Rothschild, 1893) -- valid -- Petrel ala negra, Black-winged Petrel, Pétrel à ailes noires
  Pterodroma phaeopygia (Salvin, 1876) -- valid -- Petrel de Galápagos, Galapagos Petrel, Pétrel des Galapagos
  Pterodroma rostrata (Peale, 1848) -- invalid -- Petrel de Tahití, Pétrel de Tahiti, Tahiti Petrel
  Pteroglossus torquatus (J. F. Gmelin, 1788) -- valid -- Arasari de collar, Collared Aracari
  Pteronotus parnellii (Gray, 1843) -- valid -- Parnell's Mustached Bat, Murciélago-bigotudo de Parnell, Common Mustached Bat, Parnell's Common Mustached Bat
  Ptychohyla erythromma (Taylor, 1937) -- invalid -- Rana-de árbol común
  Ptychohyla euthysanota (Kellogg, 1928) -- valid -- Rana-de árbol guerrerense
  Ptychohyla leonhardschultzei (Ahl, 1934) -- valid -- Rana-de árbol de Schultze
  Ptychoramphus aleuticus (Pallas, 1811) -- valid -- Cassin's Auklet, Alcuela oscura, Starique de Cassin, Mérgulo sombrío, mérgulo-sombrio
  Puffinus auricularis C. H. Townsend, 1890 -- valid -- 'A'o, Manx, Newell's Townsend's Shearwater, Pardela de Revillagigedo, Townsend's Shearwater, Puffin de Townsend
  Puffinus bulleri Salvin, 1888 -- valid -- Pardela de Buller, Buller's Shearwater, Puffin de Buller
  Puffinus carneipes Gould, 1844 -- valid -- Pardela pata pálida, Flesh-footed Shearwater, Puffin à pieds pâles
  Puffinus creatopus Coues, 1864 -- valid -- Pardela pata rosada, Pink-footed Shearwater, Puffin à pieds roses
  Puffinus gravis (O'Reilly, 1818) -- valid -- Pardela mayor, Greater Shearwater, Great Shearwater, Puffin majeur
  Puffinus griseus (Gmelin, 1789) -- valid -- Pardela gris, Sooty Shearwater, Puffin fuligineux
  Puffinus lherminieri Lesson, 1839 -- valid -- Pardela de Audubon, Audubon's Shearwater, Puffin d'Audubon
  Puffinus nativitatis Streets, 1877 -- valid -- Pardela de Navidad, Christmas Shearwater, Puffin de la Nativité
  Puffinus opisthomelas Coues, 1864 -- valid -- Puffin cul-noir, Pardela mexicana, Black-vented Shearwater
  Puffinus pacificus (Gmelin, 1789) -- valid -- Pardela cola cuña, Wedge-tailed Shearwater, Puffin fouquet
  Puffinus tenuirostris (Temminck, 1836) -- valid -- Pardela cola corta, Short-tailed Shearwater, Puffin à bec grêle
  Pulsatrix perspicillata (Latham, 1790) -- valid -- Búho de anteojos, Spectacled Owl
  Puma concolor (Linnaeus, 1771) -- valid -- Cougar, Puma, Puma, mountain lion
  Pyrocephalus rubinus (Boddaert, 1783) -- valid -- Mosquero cardenal, Vermilion Flycatcher
  Quiscalus mexicanus (Gmelin, 1788) -- valid -- Great-tailed Grackle, Zanate mexicano
  Quiscalus palustris (Swainson, 1827) -- valid -- Zanate de Lerma, Slender-billed Grackle
  Rallus elegans Audubon, 1834 -- valid -- Rascón real, King Rail, râle élégant
  Rallus limicola Vieillot, 1819 -- valid -- Rascón limícola, Virginia Rail, râle de Virginie
  Rallus longirostris Boddaert, 1783 -- valid -- Clapper Rail, Rascón picudo
  Ramphastos sulfuratus R. Lesson, 1830 -- valid -- Tucán pico canoa, Keel-billed Toucan
  Ramphocaenus melanurus Vieillot, 1819 -- valid -- Soterillo picudo, Long-billed Gnatwren
  Ramphocelus passerinii Bonaparte, 1831 -- valid -- Tángara terciopelo, Passerini's Tanager, Scarlet-rumped Tanager, Tangara à croupion rouge, Tangara terciopelo, tangara-de-rabo-vermelho
  Ramphocelus sanguinolentus (R. Lesson, 1831) -- valid -- Crimson-collared Tanager, Tangara ceinturé, Tangara acollarada
  Rana aurora Baird and Girard, 1852 -- valid -- Red-legged Frog, Rana pata roja, Northern Red-legged Frog
  Rana berlandieri Baird, 1859 -- invalid -- Rio Grande Frog, Rio Grande Leopard Frog, Rana del Río Grande
  Rana boylii Baird, 1854 -- valid -- Rana pata amarilla, Foothill Yellow-legged Frog
  Rana catesbeiana Shaw, 1802 -- invalid -- American Bullfrog, Rana toro, ouaouaron, Bullfrog
  Rana chiricahuensis Platz and Mecham, 1979 -- invalid -- Chiricahua Leopard Frog, Rana de chiricahua
  Rana dunni Zweifel, 1957 -- invalid -- Rana de Pátzcuaro
  Rana forreri Boulenger, 1883 -- invalid -- Rana de Forrer
  Rana johni Blair, 1965 -- invalid -- Rana de Moore
  Rana maculata Brocchi, 1877 -- invalid -- Rana de Los Altos
  Rana magnaocularis Frost and Bagnara, 1974 -- invalid -- Rana del noroeste-mexicano
  Rana montezumae Baird, 1854 -- invalid -- Rana de Moctezuma
  Rana neovolcanica Hillis and Frost, 1985 -- invalid -- Rana neovolcánica
  Rana omiltemana Günther, 1900 -- invalid -- Rana guerrerense
  Rana pueblae Zweifel, 1955 -- invalid -- Rana poblana
  Rana pustulosa Boulenger, 1883 -- invalid -- Rana de cascada
  Rana sierramadrensis Taylor, 1939 -- invalid -- Rana de Sierra Madre-Occidental
  Rana spectabilis Hillis and Frost, 1985 -- invalid -- Rana vistosa
  Rana tarahumarae Boulenger, 1917 -- invalid -- Tarahumara Frog, Rana tarahumara
  Rana tlaloci Hillis and Frost, 1985 -- invalid -- Rana de Tláloc
  Rana trilobata Mocquard, 1899 -- invalid -- Rana pierna de pollo
  Rana vaillanti Brocchi, 1877 -- invalid -- Rana de Vaillant
  Rana yavapaiensis Platz and Frost, 1984 -- invalid -- Yavapai Frog, Lowland Leopard Frog, Rana de Yavapai, Yavapai Leopard Frog
  Rana zweifeli Hillis, Frost and Webb, 1984 -- invalid -- Rana de Zweifel
  Recurvirostra americana J. F. Gmelin, 1789 -- valid -- Avoceta americana, American Avocet, Avocette d'Amérique, alfaiate-de-pescoço-pardo
  Regulus calendula (Linnaeus, 1766) -- valid -- Reyezuelo de rojo, Ruby-crowned Kinglet, roitelet à couronne rubis
  Regulus satrapa Lichtenstein, 1823 -- valid -- Reyezuelo de oro, Golden-crowned Kinglet, roitelet à couronne dorée
  Reithrodontomys fulvescens J. A. Allen, 1894 -- valid -- Ratón-cosechero leonado, Fulvous Harvest Mouse
  Reithrodontomys megalotis (Baird, 1857) -- valid -- Ratón-cosechero común, Western Harvest Mouse
  Reithrodontomys montanus (Baird, 1855) -- valid -- Ratón-cosechero de pradera, Plains Harvest Mouse
  Rhadinaea bogertorum Myers, 1974 -- valid -- Culebra-café oaxaqueña, Oaxacan Graceful Brown Snake
  Rhadinaea cuneata Myers, 1974 -- valid -- Culebra-café veracruzana, Veracruz Graceful Brown Snake
  Rhadinaea decorata (Günther, 1858) -- valid -- Culebra-café adornada, Adorned Graceful Brown Snake
  Rhadinaea forbesi H. M. Smith, 1942 -- valid -- Culebra-café de Forbes, Forbes' Graceful Brown Snake
  Rhadinaea fulvivittis Cope, 1875 -- valid -- Culebra-café listada, Ribbon Graceful Brown Snake
  Rhadinaea gaigeae Bailey, 1937 -- valid -- Culebra-café de Gaige, Gaige's Pine Forest Snake
  Rhadinaea godmani (Günther, 1865) -- invalid -- Culebra-café de Godman
  Rhadinaea hannsteini (Stuart, 1949) -- invalid -- Culebra-café labios manchados
  Rhadinaea hempsteadae Stuart and Bailey, 1941 -- invalid -- Culebra-café de Hempstead
  Rhadinaea hesperia Bailey, 1940 -- valid -- Culebra-café de Occidente, Western Graceful Brown Snake
  Rhadinaea lachrymans (Cope, 1870) -- invalid -- Culebra-café llorona
  Rhadinaea laureata (Günther, 1868) -- valid -- Culebra-café coronada, Crowned Graceful Brown Snake
  Rhadinaea macdougalli H. M. Smith and Langebartel, 1949 -- valid -- Culebra-café de MacDougall, MacDougall's Graceful Brown Snake
  Rhadinaea marcellae Taylor, 1949 -- valid -- Culebra-café de Marcella, Marcella's Graceful Brown Snake
  Rhadinaea montana H. M. Smith, 1944 -- valid -- Culebra-café de Nuevo León, Nuevo Leon Graceful Brown Snake
  Rhadinaea myersi Rossman, 1965 -- valid -- Culebra-café de Meyer, Myers' Graceful Brown Snake
  Rhadinaea omiltemana (Günther, 1894) -- valid -- Culebra-café guerrerense, Guerreran Pine Woods Snake
  Rhadinaea posadasi (Slevin, 1936) -- invalid -- Culebra-café de Posada
  Rhadinaea quinquelineata Cope, 1886 -- valid -- Culebra-café poblana, Pueblan Graceful Brown Snake
  Rhadinaea schistosa (H. M. Smith, 1941) -- invalid -- Culebra-café collar-incompleto
  Rhadinaea taeniata (Peters, 1863) -- valid -- Culebra-café de pino-encino, Pine-Oak Snake
  Rhadinophanes monticola Myers and Campbell, 1981 -- valid -- Culebra de montaña, Graceful Mountain Snake
  Rhinocheilus lecontei Baird and Girard, 1853 -- valid -- Long-nosed Snake, Culebra narigona, Longnose Snake, Western Long-nosed Snake
  Rhinoclemmys areolata (Duméril and Bibron in Duméril and Duméril, 1851) -- valid -- Tortuga-de monte mojina, Furrowed Wood Turtle
  Rhinoclemmys pulcherrima (Gray, 1856) -- valid -- Tortuga-de monte pintada, Painted Wood Turtle
  Rhinoclemmys rubida (Cope, 1870) -- valid -- Tortuga-de monte payaso, Mexican Spotted Wood Turtle
  Rhinophrynus dorsalis Duméril and Bibron, 1841 -- valid -- Mexican Burrowing Toad, Sapo-excavador mexicano, Burrowing Toad
  Rhodinocichla rosea (R. Lesson, 1832) -- valid -- Tángara cuitlacoche, Rosy Thrush-Tanager, Quéo rosalbin, Tangara rosada, Rosy Thrush-tanager
  Rhodothraupis celaeno (Deppe, 1830) -- valid -- Crimson-collared Grosbeak, Picogordo cuello rojo
  Rhyacosiredon altamirani (Dugès, 1895) -- invalid -- Siredón del Ajusco
  Rhyacosiredon rivularis Taylor, 1940 -- invalid -- Siredón de Toluca
  Rhynchocyclus brevirostris (Cabanis, 1847) -- valid -- Eye-ringed Flatbill, Mosquero de anteojos
  Rhynchopsitta pachyrhyncha (Swainson, 1827) -- valid -- Thick-billed Parrot, Cotorra-serrana occidental, Conure à gros bec, Cotorra serrana occidental, papagaio-mexicano-de-testa-vermelha
  Rhynchopsitta terrisi R. T. Moore, 1947 -- valid -- Maroon-fronted Parrot, Cotorra-serrana oriental, Conure à front brun, Cotorra serrana oriental, papagaio-de-fronte-castanha
  Rhytipterna holerythra (P. L. Sclater & Salvin, 1860) -- valid -- Rufous Mourner, Plañidera alazán
  Ridgwayia pinicola (P. L. Sclater, 1859) -- valid -- Mirlo pinto, Aztec Thrush
  Riparia riparia (Linnaeus, 1758) -- valid -- Golondrina ribereña, Bank Swallow, hirondelle de rivage, Sand Martin
  Rissa tridactyla (Linnaeus, 1758) -- valid -- Gaviota pata negra, Black-legged Kittiwake, Mouette tridactyle, Gaviota tridáctila, gaivota-tridáctila
  Rostrhamus sociabilis (Vieillot, 1817) -- valid -- Snail Kite, Gavilán caracolero, Milan des marais
  Rynchops niger Linnaeus, 1758 -- valid -- Rayador americano, Black Skimmer, Bec-en-ciseaux noir, talha-mar
  Salpinctes obsoletus (Say, 1822) -- valid -- Rock Wren, Chivirín saltarroca
  Saltator atriceps (R. Lesson, 1832) -- valid -- Picurero cabeza negra, Black-headed Saltator, Saltator à tête noire, Pepitero cabecinegro, bicudo-cabeça-preta
  Saltator coerulescens Vieillot, 1817 -- valid -- Picurero grisáceo, Greyish Saltator, Grayish Saltator, Blue-grey Saltator, Saltator gris, Pepitero grisáceo del Amazonas, sabiá-gongá, Blue-gray Saltator, Amazonian Grey Saltator
  Saltator maximus (P. L. S. Müller, 1776) -- valid -- Picurero bosquero, Buff-throated Saltator, Saltator des grands-bois, Pepitero gorjicanelo, tempera-viola
  Salvadora bairdi Jan, 1860 -- valid -- Culebra-parchada de Baird, Baird's Patchnose Snake
  Salvadora deserticola Schmidt, 1940 -- valid -- Big Bend Patch-nosed Snake, Culebra-parchada de Big Bend, Big Bend Patchnose Snake
  Salvadora grahamiae Baird and Girard, 1853 -- valid -- Mountain Patch-nosed Snake, Culebra-parchada de montaña, Mountain Patchnose Snake, Eastern Patch-nosed Snake
  Salvadora hexalepis (Cope, 1867) -- valid -- Western Patch-nosed Snake, Culebra-parchada de cabestrillo, Western Patchnose Snake
  Salvadora intermedia Hartweg, 1940 -- valid -- Culebra-parchada oaxaqueña, Oaxacan Patchnose Snake
  Salvadora lemniscata (Cope, 1895) -- valid -- Culebra-parchada del Pacífico, Pacific Patchnose Snake
  Salvadora mexicana (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Culebra-parchada mexicana, Mexican Patchnose Snake
  Sarcoramphus papa (Linnaeus, 1758) -- valid -- Zopilote rey, King Vulture, Sarcoramphe roi
  Sauromalus ater A. H. A. Duméril, 1856 -- valid -- Chuckwalla norteña, Common Chuckwalla, Northern Chuckwalla
  Sauromalus australis Shaw, 1945 -- invalid -- Chuckwalla peninsular
  Sauromalus hispidus Stejneger, 1891 -- valid -- Chuckwalla espinosa, Spiny Chuckwalla
  Sauromalus obesus (Baird, 1859) -- invalid -- Chuckwalla, Chuckwalla común
  Sauromalus slevini Van Denburgh, 1922 -- valid -- Chuckwalla de Monserrat, Slevin's Chuckwalla, Monserrat Chuckwalla
  Sauromalus varius Dickerson, 1919 -- valid -- Chuckwalla de San Esteban, Piebald Chuckwalla
  Sayornis nigricans (Swainson, 1827) -- valid -- Black Phoebe, Papamoscas negro
  Sayornis phoebe (Latham, 1790) -- valid -- Papamoscas fibí, Eastern Phoebe, moucherolle phébi
  Sayornis saya (Bonaparte, 1825) -- valid -- Papamoscas llanero, Say's Phoebe, moucherolle à ventre roux
  Scalopus aquaticus (Linnaeus, 1758) -- valid -- topos, Topo occidental, Eastern Mole
  Scapanus latimanus (Bachman, 1842) -- valid -- topociego, Topo pata ancha, Broad-footed Mole
  Scaphidura oryzivora (Gmelin, 1788) -- invalid -- Tordo gigante
  Scaphiodontophis annulatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Culebra-añadida guatemalteca, Guatemala Neckband Snake
  Sceloporus acanthinus Bocourt, 1873 -- valid -- Lagartija-escamosa de Boucourt, Bocourt's Spiny Lizard
  Sceloporus adleri H. M. Smith and Savitzky, 1974 -- valid -- Lagartija-escamosa de Adler, Adler's Spiny Lizard
  Sceloporus aeneus Wiegmann, 1828 -- valid -- Lagartija-escamosa llanera, Southern Bunchgrass Lizard
  Sceloporus anahuacus Lara-Góngora, 1983 -- valid -- Lagartija-escamosa de Anáhuac, Anahuacan Bunchgrass Lizard
  Sceloporus angustus (Dickerson, 1919) -- valid -- Lagartija-escamosa angosta, Santa Cruz Island Sator
  Sceloporus asper Boulenger, 1897 -- valid -- Lagartija-escamosa de Boulenger, Asperous Spiny Lizard
  Sceloporus bicanthalis H. M. Smith, 1937 -- valid -- Lagartija-escamosa transvolcánica, Trans Volcanic Bunchgrass Lizard
  Sceloporus bulleri Boulenger, 1894 -- valid -- Lagartija-escamosa de Buller, Buller's Spiny Lizard
  Sceloporus carinatus H. M. Smith, 1936 -- valid -- Lagartija-escamosa aquillada, Keeled Spiny Lizard
  Sceloporus cautus H. M. Smith, 1938 -- valid -- Lagartija-escamosa tímida, Shy Spiny Lizard
  Sceloporus chrysostictus Cope, 1866 -- valid -- Lagartija-escamosa pintas amarillas, Yellow-spotted Spiny Lizard
  Sceloporus cozumelae Jones, 1927 -- valid -- Lagartija-escamosa de Cozumel, Cozumel Spiny Lizard
  Sceloporus cryptus H. M. Smith and Lynch, 1967 -- valid -- Lagartija-escamosa de Sierra de Juárez, Sierra Juarez Spiny Lizard
  Sceloporus edwardtaylori H. M. Smith, 1936 -- valid -- Lagartija-escamosa de Taylor, Taylor's Spiny Lizard
  Sceloporus exsul Dixon, Ketchersid and Lieb, 1972 -- valid -- Lagartija-escamosa de Querétaro, Queretaran Desert Lizard
  Sceloporus formosus Wiegmann, 1834 -- valid -- Lagartija-escamosa esmeralda-norteña, Mexican Emerald Spiny Lizard
  Sceloporus gadoviae Boulenger, 1905 -- valid -- Lagartija-escamosa de Gadow, Gadow's Spiny Lizard
  Sceloporus goldmani H. M. Smith, 1937 -- valid -- Lagartija-escamosa de Goldman, Goldman's Bunchgrass Lizard
  Sceloporus graciosus Baird and Girard, 1852 -- valid -- Lagartija-escamosa de Artemisa, Sagebrush Lizard
  Sceloporus grammicus Wiegmann, 1828 -- valid -- Mesquite Lizard, Lagartija-escamosa de mezquite, Graphic Spiny Lizard
  Sceloporus grandaevus (Dickerson, 1919) -- valid -- Lagartija-escamosa anciana, Cerralvo Island Sator
  Sceloporus heterolepis Boulenger, 1894 -- valid -- Lagartija-escamosa dorso aquillado, Dorsalkeel Spiny Lizard, Southern Odd-scaled Lizard
  Sceloporus horridus Wiegmann, 1834 -- valid -- Lagartija-escamosa tarasca, Rough Lizard, Horrible Spiny Lizard
  Sceloporus hunsakeri Hall and H. M. Smith, 1979 -- valid -- Lagartija-escamosa de Hunsaker, Hunsaker's Spiny Lizard
  Sceloporus insignis Webb, 1967 -- valid -- Lagartija-escamosa collar negro, Michoacán Blackcollar Lizard, Coalcoman Black-collared Lizard
  Sceloporus internasalis H. M. Smith and Bumzahem, 1955 -- valid -- Lagartija-escamosa verde, Mail-snouted Spiny Lizard
  Sceloporus jalapae Günther, 1890 -- valid -- Lagartija-escamosa jalapeña, Jalapa Spiny Lizard
  Sceloporus licki Van Denburgh, 1895 -- valid -- Lagartija-escamosa del Cabo, Cape Arboreal Spiny Lizard
  Sceloporus lineatulus Dickerson, 1919 -- valid -- Lagartija-escamosa de Santa Catalina, Santa Catalina Spiny Lizard
  Sceloporus lundelli H. M. Smith, 1939 -- valid -- Lagartija-escamosa de Lundell, Lundell's Spiny Lizard
  Sceloporus macdougalli H. M. Smith and Bumzahem, 1953 -- valid -- Lagartija-escamosa de MacDougall, MacDougall's Spiny Lizard
  Sceloporus maculosus H. M. Smith, 1934 -- valid -- Lagartija-escamosa maculada, Spotted Spiny Lizard, Northern Snub-nosed Lizard
  Sceloporus magister Hallowell, 1854 -- valid -- Desert Spiny Lizard, Lagartija-escamosa de desierto
  Sceloporus megalepidurus H. M. Smith, 1934 -- valid -- Lagartija-escamosa escamas grandes, Largescale Spiny Lizard, Cursorial Spiny Lizard, Dull Cursorial Spiny Lizard
  Sceloporus melanorhinus Bocourt, 1876 -- valid -- Lagartija-escamosa hocico negro, Black-nosed Lizard, Pastel Tree Lizard
  Sceloporus merriami Stejneger, 1904 -- valid -- Canyon Lizard, Lagartija-escamosa de cañón
  Sceloporus mucronatus Cope, 1885 -- valid -- Lagartija-escamosa de grieta-sureña, Cleft Lizard
  Sceloporus nelsoni Cochran, 1923 -- valid -- Lagartija-escamosa de Nelson, Nelson's Spiny Lizard
  Sceloporus occidentalis Baird and Girard, 1852 -- valid -- Western Fence Lizard, Lagartija-escamosa del occidente
  Sceloporus ochoterenae H. M. Smith, 1934 -- valid -- Lagartija-escamosa de Querétaro, Queretaran Spiny Lizard, Ochoterena's Lizard
  Sceloporus olivaceus H. M. Smith, 1934 -- valid -- Texas Spiny Lizard, Lagartija-escamosa de Texas
  Sceloporus orcutti Stejneger, 1893 -- valid -- Granite Spiny Lizard, Lagartija-escamosa de granito
  Sceloporus ornatus Baird, 1859 -- valid -- Lagartija-escamosa adornada, Ornate Spiny Lizard
  Sceloporus palaciosi Lara-Góngora, 1983 -- valid -- Lagartija-escamosa de Palacios, Palacios' Bunchgrass Lizard
  Sceloporus parvus H. M. Smith, 1934 -- valid -- Lagartija-escamosa panza azul, Bluebelly Lizard
  Sceloporus pyrocephalus Cope, 1864 -- valid -- Lagartija-escamosa de pedregal, Boulder Spiny Lizard, Red-headed Spiny Lizard
  Sceloporus rufidorsum Yarrow, 1882 -- invalid -- Lagartija-escamosa de desierto-mexicano
  Sceloporus salvini Günther, 1890 -- valid -- Lagartija-escamosa de Salvin, Salvin's Spiny Lizard
  Sceloporus scalaris Wiegmann, 1828 -- valid -- Bunch Grass Lizard, Lagartija-escamosa escalonada, Light-bellied Bunch Grass Lizard
  Sceloporus serrifer Cope, 1866 -- valid -- Blue Spiny Lizard, Lagartija-escamosa azul, Rough-scaled Lizard
  Sceloporus siniferus Cope, 1871 -- valid -- Lagartija-escamosa cola larga, Longtail Spiny Lizard
  Sceloporus smaragdinus Bocourt, 1873 -- valid -- Lagartija-escamosa esmeralda-de Bocourt, Bocourt's Emerald Lizard
  Sceloporus spinosus Wiegmann, 1828 -- valid -- Lagartija-escamosa espinosa, Eastern Spiny Lizard
  Sceloporus squamosus Bocourt, 1874 -- valid -- Lagartija-escamosa de Bocourt, Mexican Spiny Lizard
  Sceloporus stejnegeri H. M. Smith, 1942 -- valid -- Lagartija-escamosa collar negro, Stejneger's Blackcollar Spiny Lizard
  Sceloporus subpictus Lynch and H. M. Smith, 1965 -- valid -- Lagartija-escamosa pintada, Southern Cursorial Lizard
  Sceloporus taeniocnemis Cope, 1885 -- valid -- Lagartija-escamosa esmeralda-de Cope, Guatemalan Emerald Spiny Lizard
  Sceloporus tanneri H. M. Smith and Larsen, 1975 -- valid -- Lagartija-escamosa de Tanner, Tanner's Spiny Lizard
  Sceloporus torquatus Wiegmann, 1828 -- valid -- Lagartija-escamosa barrada, Crevice Swift, Torquate Lizard
  Sceloporus undulatus (Bosc and Daudin in Sonnini and Latreille, 1801) -- valid -- Eastern Fence Lizard, Fence Lizard, Plateau Lizard, Prairie Lizard, Lagartija-escamosa de pradera
  Sceloporus utiformis Cope, 1864 -- valid -- Lagartija-escamosa de suelo, Cope's Largescale Spiny Lizard, Antesator
  Sceloporus variabilis Wiegmann, 1834 -- valid -- Rose-bellied Lizard, Lagartija-escamosa panza rosada, Rosebelly Lizard
  Sceloporus virgatus H. M. Smith, 1938 -- valid -- Striped Plateau Lizard, Lagartija-escamosa rayada
  Sceloporus zosteromus Cope, 1863 -- valid -- Lagartija-escamosa de San Lucas, Central Baja Spiny Lizard
  Schiffornis turdinus (Wied-Neuwied, 1831) -- invalid -- Saltarín café
  Scinax staufferi (Cope, 1865) -- valid -- Rana-de árbol de Stauffer
  Scincella gemmingeri (Cope, 1864) -- valid -- Encinela de selva, Forest Ground Skink
  Scincella lateralis (Say in James, 1822) -- valid -- Ground Skink, Encinela norteña, Little Brown Skink
  Scincella silvicola (Taylor, 1937) -- valid -- Encinela de Taylor
  Sciurus aberti Woodhouse, 1853 -- valid -- Ardilla de Albert, Abert's Squirrel
  Sciurus arizonensis Coues, 1867 -- valid -- Ardilla de Arizona, Arizona Gray Squirrel
  Sciurus aureogaster F. Cuvier, 1829 -- valid -- Ardilla vientre rojo, Mexican gray squirrel, Red-bellied Squirrel
  Sciurus griseus Ord, 1818 -- valid -- Ardilla gris, Western Gray Squirrel
  Sciurus nayaritensis J. A. Allen, 1890 -- valid -- Nayarit squirrel, Ardilla de Nayarit, Mexican Fox Squirrel
  Sciurus niger Linnaeus, 1758 -- valid -- fox squirrel, Ardilla zorra, Eastern Fox Squirrel
  Sclerurus guatemalensis (Hartlaub, 1844) -- valid -- Scaly-throated Leaftosser, Hojarasquero oscuro
  Sclerurus mexicanus P. L. Sclater, 1857 -- valid -- Tawny-throated Leaftosser, Hojarasquero pecho rufo
  Scolopax minor J. F. Gmelin, 1789 -- valid -- Chocha americana, American Woodcock, Bécasse d'Amérique, galinhola-pequena
  Seiurus aurocapillus (Linnaeus, 1766) -- invalid -- Chipe suelero, Ovenbird, paruline couronnée
  Seiurus motacilla (Vieillot, 1809) -- invalid -- Chipe arroyero, Louisiana Waterthrush, paruline hochequeue
  Seiurus noveboracensis (J. F. Gmelin, 1789) -- invalid -- Chipe charquero, Northern Waterthrush, paruline des ruisseaux
  Selasphorus platycercus (Swainson, 1827) -- valid -- Broad-tailed Hummingbird, Zumbador cola ancha
  Selasphorus rufus (J. F. Gmelin, 1788) -- valid -- Rufous Hummingbird, Zumbador rufo
  Selasphorus sasin (R. Lesson, 1829) -- valid -- Allen's Hummingbird, Zumbador de Allen
  Senticolis triaspis (Cope, 1866) -- valid -- Green Rat Snake, Green Ratsnake, Culebra oliva
  Setophaga ruticilla (Linnaeus, 1758) -- valid -- Chipe flameante, American Redstart, Paruline flamboyante
  Sialia currucoides (Bechstein, 1798) -- valid -- Azulejo pálido, Mountain Bluebird, merlebleu azuré
  Sialia mexicana Swainson, 1832 -- valid -- Azulejo garganta azul, Western Bluebird, merle-bleu de l'ouest
  Sialia sialis (Linnaeus, 1758) -- valid -- Azulejo garganta canela, Eastern Bluebird, merlebleu de l'est
  Sibon fischeri (Boulenger, 1894) -- invalid -- Culebra-caracolera de Fisher
  Sibon sartorii (Cope, 1863) -- invalid -- Culebra-caracolera terrestre
  Sibon zweifeli (Liner and Wilson, 1970) -- invalid -- Culebra-caracolera de Zweifel
  Sicalis luteola (Sparrman, 1789) -- valid -- Gorrión-canario sabanero, Grassland Yellow-Finch, Grassland Yellow Finch, Sicale des savanes, Chirigüe sabanero, tipio, Grassland Yellow-finch
  Sigmodon arizonae Mearns, 1890 -- valid -- Rata-algodonera de Arizona, Arizona Cotton Rat
  Sigmodon fulviventer J. A. Allen, 1889 -- valid -- Rata-algodonera vientre leonado, Tawny-bellied Cotton Rat, Zacatecan Cotton Rat
  Sigmodon hispidus Say and Ord, 1825 -- valid -- Rata-algodonera crespa, Hispid Cotton Rat
  Sigmodon ochrognathus Bailey, 1902 -- valid -- Rata-algodonera nariz amarilla, Yellow-nosed Cotton Rat
  Siren intermedia Barnes, 1826 -- valid -- Sirena menor, Lesser Siren
  Siren lacertina Linnaeus, 1767 -- invalid -- Sirena mayor, Greater Siren
  Sistrurus catenatus (Rafinesque-Schmaltz, 1818) -- valid -- Massasauga, Víbora-cascabel pigmea-norteña, Eastern Massasauga
  Sistrurus ravus (Cope, 1865) -- invalid -- Víbora-cascabel pigmea-mexicana
  Sitta canadensis Linnaeus, 1766 -- valid -- Sita canadiense, Red-breasted Nuthatch, sittelle à poitrine rousse
  Sitta carolinensis Latham, 1790 -- valid -- Sita pecho blanco, White-breasted Nuthatch, sittelle à poitrine blanche
  Sitta pygmaea Vigors, 1839 -- valid -- Sita enana, Pygmy Nuthatch
  Sittasomus griseicapillus (Vieillot, 1818) -- valid -- Olivaceous Woodcreeper, Trepatroncos oliváceo
  Smilisca cyanosticta (Smith, 1953) -- valid -- Rana-de árbol mexicana puntos azules
  Sonora aemula (Cope, 1879) -- valid -- Culebra-suelera cola plana, Filetail Ground Snake
  Sonora michoacanensis (Dugès, 1884) -- valid -- Culebra-suelera michoacana, Michoacán Ground Snake
  Sonora semiannulata Baird and Girard, 1853 -- valid -- Ground Snake, Groundsnake, Culebra-suelera semianillada, Western Groundsnake
  Sorex arizonae Diersing and Hoffmeister, 1977 -- valid -- Musaraña de Arizona, Arizona Shrew
  Sorex ornatus Merriam, 1895 -- valid -- Suisun shrew, Musaraña adornada, Ornate Shrew
  Spea bombifrons (Cope, 1863) -- valid -- Sapo-de espuelas de las planicies, Plains Spadefoot
  Speotyto cunicularia (Molina, 1782) -- invalid -- Tecolote llanero
  Spermophilus beecheyi (Richardson, 1829) -- invalid -- Ardillón de California, California Ground Squirrel
  Spermophilus mexicanus (Erxleben, 1777) -- invalid -- Ardillón mexicano, Mexican Ground Squirrel
  Spermophilus spilosoma Bennett, 1833 -- invalid -- Ardillón punteado, Spotted Ground Squirrel
  Spermophilus tereticaudus Baird, 1858 -- invalid -- Ardillón cola redonda, Round-tailed Ground Squirrel
  Spermophilus variegatus (Erxleben, 1777) -- invalid -- Ardillón de roca, Rock Squirrel
  Sphaerodactylus argus Gosse, 1850 -- valid -- Ocellated Dwarf Gecko, Ocellated Gekko, Ocellated Gecko, Geco-enano ocelado
  Sphaerodactylus glaucus Cope, 1865 -- valid -- Geco-enano collarejo
  Sphaerodactylus millepunctatus Hallowell, 1861 -- valid -- Geco-enano punteado
  Sphenomorphus cherriei (Cope, 1893) -- invalid -- Encinela-selvática café
  Sphenomorphus incertum (Stuart, 1940) -- invalid -- Encinela-selvática hojarasquera
  Sphiggurus mexicanus (Kerr, 1792) -- invalid -- Mexican Hairy Dwarf Porcupine, Puercoespín mexicano
  Sphyrapicus nuchalis S. F. Baird, 1858 -- valid -- Red-naped Sapsucker, Chupasavia nuca roja
  Sphyrapicus ruber (J. F. Gmelin, 1788) -- valid -- Red-breasted Sapsucker, Chupasavia cabeza roja
  Sphyrapicus thyroideus (Cassin, 1852) -- valid -- Williamson's Sapsucker, Chupasavia oscuro
  Sphyrapicus varius (Linnaeus, 1766) -- valid -- Chupasavia maculado, Yellow-bellied Sapsucker, pic maculé
  Spilogale putorius (Linnaeus, 1758) -- valid -- Eastern Spotted Skunk, spotted skunk, Zorrillo-manchado común, Alleghanian Spotted Skunk
  Spilotes pullatus (Linnaeus, 1758) -- valid -- Culebra-ratonera mica, Yellow Rat Snake, Chicken Snake, Tropical Rat Snake, Tiger Snake
  Spindalis zena (Linnaeus, 1758) -- valid -- Zéna à tête rayée, Cigua cubana, Stripe-headed Tanager, Tángara cabeza rayada, Western Spindalis
  Spiza americana (J. F. Gmelin, 1789) -- valid -- Arrocero americano, Dickcissel, dickcissel d'Amérique
  Spizaetus ornatus (Daudin, 1800) -- valid -- Águila elegante, Ornate Hawk-Eagle, Aigle orné
  Spizaetus tyrannus (Wied-Neuwied, 1820) -- valid -- Águila tirana, Black Hawk-Eagle, Aigle tyran
  Spizastur melanoleucus (Vieillot, 1816) -- invalid -- Águila blanquinegra, Black-and-white Hawk-Eagle
  Spizella atrogularis (Cabanis, 1851) -- valid -- Bruant à menton noir, Chingolo barbinegro, Black-chinned Sparrow, Gorrión barba negra
  Spizella breweri Cassin, 1856 -- valid -- Bruant de Brewer, Chingolo de Brewer, Brewer's Sparrow, Gorrión de Brewer
  Spizella pallida (Swainson, 1832) -- valid -- Chingolo pálido, Gorrión pálido, Clay-colored Sparrow, bruant des plaines
  Spizella passerina (Bechstein, 1798) -- valid -- Chingolo cejiblanco, Chipping Sparrow, bruant familier, Gorrión ceja blanca
  Spizella pusilla (A. Wilson, 1810) -- valid -- Chingolo campestre, tico-tico-pequeno, Gorrión pusila, Field Sparrow, bruant des champs
  Spizella wortheni Ridgway, 1884 -- valid -- Bruant de Worthen, Chingolo de Worthen, Worthen's Sparrow, Gorrión de Worthen
  Sporophila minuta (Linnaeus, 1758) -- valid -- Semillero pecho canela, Ruddy-breasted Seedeater, Sporophile petit-louis, Semillero pechirrufo, caboclinho-lindo
  Sporophila schistacea (Lawrence, 1862) -- valid -- Semillero apizarrado, Slate-colored Seedeater, Sporophile ardoisé, Semillero pizarroso, cigarrinha-do-norte
  Sporophila torqueola (Bonaparte, 1850) -- valid -- Sporophile à col blanc, Semillero torcaz, White-collared Seedeater, Semillero de collar, Cinnamon-rumped Seedeater
  Staurotypus triporcatus (Wiegmann, 1828) -- valid -- Tortuga-almizclera tres lomos, Mexican Giant Musk Turtle, Northern Giant Musk Turtle
  Stelgidopteryx serripennis (Audubon, 1838) -- valid -- Golondrina ala aserrada, Northern Rough-winged Swallow, hirondelle à ailes hérissées
  Stellula calliope (Gould, 1847) -- invalid -- Calliope Hummingbird, Colibrí garganta rayada
  Stenella attenuata (Gray, 1846) -- valid -- Pantropical Spotted Dolphin, Delfín moteado
  Stenella clymene (Gray, 1850) -- valid -- short-snouted spinner dolphin, Delfín de Clymen, Clymene Dolphin
  Stenella coeruleoalba (Meyen, 1833) -- valid -- Striped Dolphin, Delfín listado
  Stenella frontalis (G. Cuvier, 1829) -- valid -- Delfín embridado, Atlantic Spotted Dolphin
  Stenella longirostris (Gray, 1828) -- valid -- long-snouted spinner dolphin, Spinner Dolphin, Delfín tornillo
  Steno bredanensis (G. Cuvier in Lesson, 1828) -- valid -- Rough-toothed Dolphin, Delfín dientes rugosos
  Stenorrhina freminvillei A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854 -- valid -- Culebra-alacranera de sangre, Slaty Grey Snake, Blood Snake
  Stercorarius longicaudus Vieillot, 1819 -- valid -- Salteador cola larga, Long-tailed Jaeger, Labbe à longue queue, Págalo rabero, mandrião-de-cauda-comprida, moleiro-rabilongo, Long-tailed Skua
  Stercorarius parasiticus (Linnaeus, 1758) -- valid -- Salteador parásito, Parasitic Jaeger, Labbe parasite, Págalo parásito, mandrião-parasítico, moleiro-pequeno, Arctic Skua
  Stercorarius pomarinus (Temminck, 1815) -- valid -- Salteador pomarino, Pomarine Jaeger, Pomarine Skua, Labbe pomarin, Págalo pomarino, mandrião-pomarino, moleiro-do-árctico
  Sterna anaethetus Scopoli, 1786 -- invalid -- Bridled Tern, Charrán embridado
  Sterna antillarum (R. Lesson, 1847) -- invalid -- Charrán mínimo, Least Tern
  Sterna caspia Pallas, 1770 -- invalid -- Charrán caspia, Caspian Tern, sterne caspienne
  Sterna dougallii Montagu, 1813 -- valid -- Charrán rosado, Roseate Tern, Sterne de Dougall, trinta-réis-róseo, gaivina-rosada
  Sterna elegans Gambel, 1849 -- invalid -- Elegant Tern, Charrán elegante
  Sterna forsteri Nuttall, 1834 -- valid -- Charrán de Forster, Forster's Tern, Sterne de Forster, gaivina-de-forster
  Sterna fuscata Linnaeus, 1766 -- invalid -- Charrán sombrío, Sooty Tern
  Sterna hirundo Linnaeus, 1758 -- valid -- Charrán común, Common Tern, Sterne pierregarin, trinta-réis-boreal, gaivina
  Sterna maxima Boddaert, 1783 -- invalid -- Royal Tern, Charrán real
  Sterna nilotica J. F. Gmelin, 1789 -- invalid -- Gull-billed Tern, Charrán pico grueso
  Sterna paradisaea Pontoppidan, 1763 -- valid -- Charrán ártico, Arctic Tern, Sterne arctique, trinta-réis-ártico, gaivina-do-árctico
  Sterna sandvicensis Latham, 1787 -- invalid -- Charrán de Sandwich, Sandwich Tern
  Storeria dekayi (Holbrook, 1839) -- valid -- Dekay's Brown Snake, Dekay's Brownsnake, Culebra-parda de Kay, Brown Snake, couleuvre brune, Northern Brown Snake
  Storeria hidalgoensis Taylor, 1942 -- valid -- Culebra-parda hidalguense, Mexican Yellowbelly Brown Snake
  Storeria storerioides (Cope, 1865) -- valid -- Culebra-parda mexicana, Mexican Brown Snake
  Streptoprocne semicollaris (DeSaussure, 1859) -- valid -- White-naped Swift, Vencejo nuca blanca
  Streptoprocne zonaris (Shaw, 1796) -- valid -- White-collared Swift, Vencejo cuello blanco
  Strix fulvescens (P. L. Sclater & Salvin, 1868) -- valid -- Búho leonado, Fulvous Owl
  Strix occidentalis (Xántus de Vésey, 1860) -- valid -- Búho manchado, Spotted Owl
  Strix varia Barton, 1799 -- valid -- Búho listado, Barred Owl, chouette rayée
  Strix virgata (Cassin, 1849) -- valid -- Búho café, Mottled Owl
  Sturnella magna (Linnaeus, 1758) -- valid -- Pradero tortilla-con-chile, Eastern Meadowlark, sturnelle des prés
  Sturnella neglecta Audubon, 1844 -- valid -- Western Meadowlark, sturnelle de l'ouest, Pradero occidental
  Sturnus vulgaris Linnaeus, 1758 -- valid -- Estornino pinto, European Starling, étourneau sansonnet, Common Starling
  Sula dactylatra Lesson, 1831 -- valid -- Masked Booby, Bobo enmascarado, Fou masqué
  Sula leucogaster (Boddaert, 1783) -- valid -- Brown Booby, Bobo café, Fou brun
  Sula nebouxii Milne-Edwards, 1882 -- valid -- Blue-footed Booby, Bobo pata azul, Fou à pieds bleus
  Sula sula (Linnaeus, 1766) -- valid -- Red-footed Booby, Bobo pata roja, Fou à pieds rouges
  Sylvilagus bachmani (Waterhouse, 1839) -- valid -- Conejo matorralero, Brush Rabbit, Riparian Brush Rabbit
  Sylvilagus floridanus (J. A. Allen, 1890) -- valid -- Conejo serrano, lapin à queue blanche, Eastern Cottontail, Florida cottontail
  Symphimus leucostomus Cope, 1870 -- valid -- Culebra-labios blancos de Tehuantepec, Mexican White-lipped Snake
  Symphimus mayae (Gaige, 1936) -- valid -- Culebra-labios blancos maya, Yucatán White-lipped Snake
  Sympholis lippiens Cope, 1862 -- valid -- Culebra cola corta-mexicana, Mexican Short-tail Snake
  Synallaxis erythrothorax P. L. Sclater, 1855 -- valid -- Rufous-breasted Spinetail, Güitío pecho rufo
  Synthliboramphus antiquus (J. F. Gmelin, 1789) -- valid -- Mérgulo antiguo, Ancient Murrelet, Guillemot à cou blanc, torda-miúda-do-pacífico
  Synthliboramphus craveri (Salvadori, 1866) -- valid -- Craveri's Murrelet, Mérgulo de Craveri, Guillemot de Craveri, Mérgulo californiano alioscuro, mérgulo-de-asas-escuras
  Synthliboramphus hypoleucus (Xantus de Vesey, 1860) -- valid -- Xantus' Murrelet, Xantus' Murrelet, Xantus's Murrelet, Guillemot de Xantus, Guadalupe Murrelet, Mérgulo de la Guadalupe, mérgulo-de-asas-claras
  Tachybaptus dominicus (Linnaeus, 1766) -- valid -- Zambullidor menor, Grèbe minime, Least Grebe
  Tachycineta albilinea (Lawrence, 1863) -- valid -- Golondrina manglera, Mangrove Swallow
  Tachycineta bicolor (Vieillot, 1808) -- valid -- Golondrina bicolor, Tree Swallow, hirondelle bicolore
  Tachycineta thalassina (Swainson, 1827) -- valid -- Violet-green Swallow, Golondrina verdemar
  Tadarida brasiliensis (I. Geoffroy, 1824) -- valid -- Murciélago-cola suelta brasileño, Brazilian Free-tailed Bat, Mexican Free-tailed Bat
  Tangara cabanisi (P. L. Sclater, 1868) -- invalid -- Tángara chiapaneca, Cabanis's Tanager, Azure-rumped Tanager
  Tangara larvata (Du Bus de Gisignies, 1846) -- invalid -- Tángara capucha dorada, Golden-hooded Tanager
  Tantalophis discolor (Günther, 1860) -- valid -- Culebra-ojo de gato-falsa oaxaqueña, Oaxacan Cat-eyed Snake
  Tantilla atriceps (Günther, 1895) -- valid -- Mexican Black-headed Snake, Culebra-encapuchada mexicana, Mexican Blackhead Snake
  Tantilla bocourti (Günther, 1895) -- valid -- Culebra-encapuchada de Bocourt, Bocourt's Black-headed Snake
  Tantilla briggsi Savitzky and H. M. Smith, 1971 -- valid -- Culebra-ciempiés de Briggs, Briggs' Centipede Snake
  Tantilla calamarina Cope, 1866 -- valid -- Culebra-ciempiés del Pacífico, Pacific Coast Centipede Snake
  Tantilla canula Cope, 1876 -- invalid -- Culebra-ciempiés imitacoral
  Tantilla cascadae Wilson and Meyer, 1981 -- valid -- Culebra-ciempiés michoacana, Michoacán Centipede Snake
  Tantilla coronadoi Hartweg, 1944 -- valid -- Culebra-ciempiés guerrerense, Guerreran Centipede Snake
  Tantilla cuniculator H. M. Smith, 1939 -- valid -- Culebra-ciempiés del Petén
  Tantilla deppei (Bocourt, 1883) -- valid -- Culebra-ciempiés de Deppe, Deppe's Centipede Snake
  Tantilla flavilineata H. M. Smith and Burger, 1950 -- valid -- Culebra-ciempiés rayas amarillas, Yellow-lined Centipede Snake
  Tantilla gracilis Baird and Girard, 1853 -- valid -- Flat-headed Snake, Culebra-ciempiés cabeza plana, Flathead Snake
  Tantilla hobartsmithi Taylor, 1936 -- valid -- Southwestern Black-headed Snake, Culebra-encapuchada del Suroeste, Southwestern Blackhead Snake, Smith's Black-headed Snake
  Tantilla jani (Günther, 1895) -- valid -- Culebra-ciempiés de Jan, Jan's Centipede Snake
  Tantilla miniata Cope, 1863 -- invalid -- Culebra-ciempiés veracruzana
  Tantilla moesta (Günther, 1863) -- valid -- Culebra-ciempiés vientre negro, Blackbelly Centipede Snake
  Tantilla morgani Hartweg, 1944 -- invalid -- Culebra-encapuchada de Morgan
  Tantilla nigriceps Kennicott, 1860 -- valid -- Plains Black-headed Snake, Culebra-encapuchada de pradera, Plains Blackhead Snake
  Tantilla oaxacae Wilson and Meyer, 1971 -- valid -- Culebra-ciempiés oaxaqueña, Oaxacan Centipede Snake
  Tantilla planiceps (Blainville, 1835) -- valid -- California Black-headed Snake, Western Black-headed Snake, Culebra-encapuchada californiana, Western Blackhead Snake
  Tantilla rubra Cope, 1875 -- valid -- Reddish Black-headed Snake, Culebra-encapuchada roja, Red Black-headed Snake
  Tantilla schistosa (Bocourt, 1883) -- valid -- Culebra-ciempiés de tierra colorada, Red Earth Centipede Snake
  Tantilla shawi Taylor, 1949 -- valid -- Culebra-ciempiés de Potosí, Potosí Centipede Snake
  Tantilla slavensi Pérez-Higareda, H. M. Smith and R. B. Smith, 1985 -- valid -- Culebra-ciempiés de Slavens, Slavens' Centipede Snake
  Tantilla striata Dunn, 1928 -- valid -- Culebra-ciempiés rayada, Striped Centipede Snake
  Tantilla taeniata (Bocourt, 1883) -- valid -- Culebra-ciempiés centroamericana, Central American Centipede Snake
  Tantilla tayrae Wilson, 1983 -- valid -- Culebra-ciempiés del Tacaná, Volcan Tacaná Centipede Snake
  Tantilla wilcoxi Stejneger, 1902 -- valid -- Chihuahuan Black-headed Snake, Culebra-encapuchada chihuahuense, Chihuahuan Blackhead Snake
  Tantilla yaquia H. M. Smith, 1942 -- valid -- Yaqui Black-headed Snake, Culebra-encapuchada yaqui, Yaquia Blackhead Snake
  Tantillita brevissima (Taylor, 1937) -- valid -- Culebra-cola corta jaspeada, Speckled Dwarf Short-tail Snake
  Tantillita lintoni (H. M. Smith, 1940) -- valid -- Culebra-cola corta de Linton, Linton's Dwarf Short-tail Snake
  Tapera naevia (Linnaeus, 1766) -- valid -- Cuclillo rayado, Striped Cuckoo
  Taraba major (Vieillot, 1816) -- valid -- Batará mayor, Great Antshrike
  Taxidea taxus (Schreber, 1777) -- valid -- American Badger, Badger, Tlalcoyote
  Tayassu pecari (Link, 1795) -- valid -- Pecari labios blancos, white-lipped peccary, White-lipped Peccary
  Tayassu tajacu (Linnaeus, 1758) -- invalid -- collared peccary, Pecari de collar
  Terrapene carolina (Linnaeus, 1758) -- valid -- Tortuga de Carolina, tortue tabatière, Eastern Box Turtle, Common Box Turtle
  Terrapene coahuila Schmidt and Owens, 1944 -- valid -- Aquatic Box Turtle, Tortuga de Cuatro CIénegas, Coahuilan Box Turtle
  Terrapene nelsoni Stejneger, 1925 -- valid -- Tortuga manchada, Spotted Box Turtle
  Terrapene ornata (Agassiz, 1857) -- valid -- Tortuga adornada, Ornate Box Turtle, Western Box Turtle
  Thalurania ridgwayi Nelson, 1900 -- invalid -- Ninfa mexicana, Mexican Woodnymph
  Thamnistes anabatinus P. L. Sclater & Salvin, 1860 -- valid -- Batará café, Russet Antshrike
  Thamnophilus doliatus (Linnaeus, 1764) -- valid -- Batará barrado, Barred Antshrike
  Thamnophis chrysocephalus (Cope, 1885) -- valid -- Culebra-listonada cabeza dorada, Goldenhead Garter Snake
  Thamnophis cyrtopsis (Kennicott, 1860) -- valid -- Black-necked Garter Snake, Culebra-listonada cuello negro, Blackneck Garter Snake, Black-necked Gartersnake
  Thamnophis digueti (Mocquard, 1899) -- invalid -- Culebra-listonada de Diguet
  Thamnophis elegans (Baird and Girard, 1853) -- valid -- Western Terrestrial Garter Snake, Culebra-listonada elegante, Terrestrial Garter Snake
  Thamnophis eques (Reuss, 1834) -- valid -- Mexican Garter Snake, Culebra-listonada del sur-mexicano, Mexican Gartersnake
  Thamnophis errans H. M. Smith, 1942 -- valid -- Culebra-listonada errante, Mexican Wandering Garter Snake
  Thamnophis exsul Rossman, 1969 -- valid -- Culebra-listonada de montaña, Montane Garter Snake
  Thamnophis fulvus (Bocourt, 1893) -- valid -- Culebra-listonada amarillenta, Highland Garter Snake
  Thamnophis godmani (Günther, 1894) -- valid -- Culebra-listonada de Godman, Godman's Garter Snake
  Thamnophis marcianus (Baird and Girard, 1853) -- valid -- Checkered Garter Snake, Culebra-listonada manchada, Checkered Gartersnake
  Thamnophis melanogaster (Peters, 1864) -- valid -- Culebra-de agua vientre negro, Blackbelly Garter Snake
  Thamnophis mendax Walker, 1955 -- valid -- Culebra-listonada tamaulipeca, Tamaulipan Montane Garter Snake
  Thamnophis proximus (Say in James, 1823) -- valid -- Western Ribbon Snake, Culebra-listonada occidental, Western Ribbonsnake
  Thamnophis pulchrilatus (Cope, 1885) -- valid -- Culebra-listonada de tierras altas-mexicana, Yellow-throated Garter Snake
  Thamnophis rufipunctatus (Cope, 1875) -- valid -- Culebra-de agua cabeza angosta, Narrow-headed Garter Snake, Narrowhead Garter Snake, Narrowhead Watersnake, Narrow-headed Gartersnake
  Thamnophis scalaris Cope, 1861 -- valid -- Culebra-listonada de montaña-cola larga, Longtail Alpine Garter Snake
  Thamnophis scaliger (Jan, 1863) -- valid -- Culebra-listonada de montaña-cola corta, Short-tail Alpine Garter Snake
  Thamnophis sirtalis (Linnaeus, 1758) -- valid -- Common Garter Snake, couleuvre rayée, Culebra-listonada común, Common Gartersnake
  Thamnophis sumichrasti (Cope, 1867) -- valid -- Culebra-listonada de Sumichrast, Sumichrast's Garter Snake
  Thamnophis valida (Kennicott, 1860) -- invalid -- Culebra-listonada de la costa-oeste
  Thomomys bottae (Eydoux and Gervais, 1836) -- valid -- Tuza de Botta, Botta's Pocket Gopher
  Thomomys umbrinus (Richardson, 1829) -- valid -- Tuza mexicana, Southern Pocket Gopher
  Thorius dubitus Taylor, 1941 -- valid -- Salamandra-pigmea de Acutzingo
  Thorius macdougalli Taylor, 1949 -- valid -- Salamandra-pigmea de MacDougall
  Thorius minutissimus Taylor, 1949 -- valid -- Salamandra-pigmea oaxaqueña
  Thorius narisovalis Taylor, 1940 -- valid -- Salamandra-pigmea de San Felipe
  Thorius pennatulus Cope, 1869 -- valid -- Salamandra-pigmea veracruzana
  Thorius pulmonaris Taylor, 1940 -- valid -- Salamandra-pigmea de cerro
  Thorius schmidti Gehlbach, 1959 -- valid -- Salamandra-pigmea de Schmidt
  Thorius troglodytes Taylor, 1941 -- valid -- Salamandra-pigmea troglodita
  Thraupis abbas (Deppe, 1830) -- valid -- Tángara ala amarilla, Yellow-winged Tanager, Tangara à miroir jaune, Tangara aliamarilla, sanhaço-de-mancha-amarela
  Thraupis episcopus (Linnaeus, 1766) -- valid -- Tángara azulgris, Blue-gray Tanager, Blue-grey Tanager, Tangara évêque, Tangara azuleja, sanhaço-da-amazônia
  Thryomanes bewickii (Audubon, 1827) -- valid -- Chivirín cola oscura, Bewick's Wren
  Thryomanes sissonii (Grayson, 1868) -- invalid -- Chivirín de Socorro, Socorro Wren
  Thryophilus pleurostictus (P. L. Sclater, 1860) -- valid -- Chivirín barrado, Banded Wren
  Thryophilus rufalbus (Lafresnaye, 1845) -- valid -- Rufous-and-white Wren, Chivirín rojizo
  Thryophilus sinaloa S. F. Baird, 1864 -- valid -- Sinaloa Wren, Chivirín sinaloense
  Thryothorus felix P. L. Sclater, 1860 -- invalid -- Chivirín feliz, Happy Wren
  Thryothorus ludovicianus (Latham, 1790) -- valid -- Chivirín de Carolina, Carolina Wren, troglodyte de Caroline
  Thryothorus maculipectus Lafresnaye, 1845 -- invalid -- Chivirín moteado, Spot-breasted Wren
  Thryothorus modestus Cabanis, 1861 -- invalid -- Chivirín modesto, Plain Wren
  Thryothorus pleurostictus P. L. Sclater, 1860 -- invalid -- Chivirín barrado, Banded Wren
  Thryothorus rufalbus Lafresnaye, 1845 -- invalid -- Chivirín rojizo, Rufous-and-white Wren
  Thryothorus sinaloa (S. F. Baird, 1864) -- invalid -- Chivirín sinaloense, Sinaloa Wren
  Tiaris olivacea (Linnaeus, 1766) -- invalid -- Yellow-faced Grassquit, Semillero oliváceo
  Tigrisoma lineatum (Boddaert, 1783) -- valid -- Garza-tigre colorada, Rufescent Tiger Heron, Onoré rayé, Rufescent Tiger-Heron
  Tigrisoma mexicanum Swainson, 1834 -- valid -- Garza-tigre mexicana, Bare-throated Tiger-Heron, Bare-throated Tiger Heron, Onoré du Mexique
  Tilmatura dupontii (R. Lesson, 1832) -- valid -- Colibrí cola pinta, Sparkling-tailed Hummingbird, Sparkling-tailed Woodstar
  Tinamus major (J. F. Gmelin, 1789) -- valid -- Great Tinamou, Tinamú mayor
  Tityra inquisitor (Lichtenstein, 1823) -- valid -- Black-crowned Tityra, Titira pico negro
  Tityra semifasciata (Spix, 1825) -- valid -- Masked Tityra, Titira enmascarada
  Todirostrum cinereum (Linnaeus, 1766) -- valid -- Common Tody-Flycatcher, Espatulilla amarillo
  Todirostrum sylvia (Desmarest, 1806) -- invalid -- Espatulilla gris
  Tolmomyias sulphurescens (Spix, 1825) -- valid -- Yellow-olive Flycatcher, Mosquero ojo blanco, Yellow-olive Flatbill
  Toluca amphisticha H. M. Smith and Laufe, 1945 -- invalid -- Culebra-toluqueña manchas gemelas
  Toluca conica Taylor and H. M. Smith, 1942 -- invalid -- Culebra-toluqueña manchas grandes
  Toluca lineata Kennicott, 1859 -- invalid -- Culebra-toluqueña lineada
  Toluca megalodon Taylor and H. M. Smith, 1942 -- invalid -- Culebra-toluqueña de San Felipe
  Toxostoma bendirei (Coues, 1873) -- valid -- Bendire's Thrasher, Cuitlacoche pico corto
  Toxostoma cinereum (Xantus de Vesey, 1860) -- valid -- Cuitlacoche peninsular, Grey Thrasher, Gray Thrasher
  Toxostoma crissale Henry, 1858 -- valid -- Crissal Thrasher, Cuitlacoche crisal
  Toxostoma curvirostre (Swainson, 1827) -- valid -- Curve-billed Thrasher, Cuitlacoche pico curvo
  Toxostoma guttatum (Ridgway, 1885) -- valid -- Cuitlacoche de Cozumel, Cozumel Thrasher
  Toxostoma lecontei Lawrence, 1851 -- valid -- Le Conte's Thrasher, Cuitlacoche pálido
  Toxostoma longirostre (Lafresnaye, 1838) -- valid -- Long-billed Thrasher, Cuitlacoche pico largo
  Toxostoma ocellatum (P. L. Sclater, 1862) -- valid -- Cuitlacoche manchado, Ocellated Thrasher
  Toxostoma redivivum (Gambel, 1845) -- valid -- California Thrasher, Cuitlacoche californiano
  Toxostoma rufum (Linnaeus, 1758) -- valid -- Cuitlacoche rojizo, moqueur roux, Brown Thrasher
  Trachemys scripta (Thunberg in Schoepff, 1792) -- valid -- slider, tortue à oreilles rouges, Tortuga gravada, Pond Slider, Common Slider
  Tretanorhinus nigroluteus Cope, 1861 -- valid -- Culebra-buceadora vientre naranja, Orangebelly Swamp Snake
  Trichechus manatus Linnaeus, 1758 -- valid -- West Indian Manatee, manatee, Manatí del Caribe, Caribbean manatee
  Trimorphodon biscutatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Western Lyre Snake, Culebra-lira cabeza negra, Costal Lyre Snake
  Trimorphodon tau Cope, 1870 -- valid -- Culebra-lira mexicana, Mexican Lyre Snake
  Tringa flavipes (J. F. Gmelin, 1789) -- valid -- Patamarilla menor, Lesser Yellowlegs, Petit Chevalier, Archibebe patigualdo chico, maçarico-de-perna-amarela, perna-amarela-pequeno
  Tringa melanoleuca (J. F. Gmelin, 1789) -- valid -- Patamarilla mayor, Greater Yellowlegs, Grand Chevalier, Archibebe patigualdo grande, maçarico-grande-de-perna-amarela, perna-amarela-grande
  Tringa solitaria A. Wilson, 1813 -- valid -- Playero solitario, Solitary Sandpiper, Chevalier solitaire, Andarríos solitario, maçarico-solitário
  Triprion petasatus (Cope, 1865) -- valid -- Rana-de árbol yucateca
  Triprion spatulatus Günther, 1882 -- valid -- Rana-de árbol cabeza de pala
  Troglodytes aedon Vieillot, 1809 -- valid -- Chivirín saltapared, House Wren, troglodyte familier
  Troglodytes aedon brunneicollis P. L. Sclater, 1858 -- valid -- Chivirín garganta café
  Troglodytes brunneicollis P. L. Sclater, 1858 -- invalid -- Chivirín garganta café
  Troglodytes rufociliatus Sharpe, 1882 -- valid -- Chivirín ceja rufa, Rufous-browed Wren
  Troglodytes sissonii (Grayson, 1868) -- valid -- Socorro Wren, Chivirín de Socorro
  Troglodytes tanneri C. H. Townsend, 1890 -- valid -- Chivirín de Clarión, Clarion Wren
  Troglodytes troglodytes (Linnaeus, 1758) -- valid -- Chivirín chochín, Winter Wren, troglodyte mignon
  Trogon citreolus Gould, 1835 -- valid -- Citreoline Trogon, Trogón citrino, Trogon citrin
  Trogon collaris Vieillot, 1817 -- valid -- Collared Trogon, Trogón de collar, surucuá-de-coleira, Trogón acollarado, Trogon rosalba
  Trogon elegans Gould, 1834 -- valid -- Trogon élégant, Elegant Trogon, Trogón elegante
  Trogon massena Gould, 1838 -- valid -- Slaty-tailed Trogon, Trogón cola oscura, surucuá-de-cauda-escura, Trogón grande, Trogon de Masséna
  Trogon melanocephalus Gould, 1836 -- valid -- Black-headed Trogon, Trogón cabeza negra, Trogón cabecinegro, Trogon à tête noire
  Trogon mexicanus Swainson, 1827 -- valid -- Mountain Trogon, Trogón mexicano, surucuá-da-montanha, Trogon montagnard
  Trogon violaceus J. F. Gmelin, 1788 -- valid -- Violaceous Trogon, Trogón violáceo, Guianan Trogon, surucuá-violáceo, Trogon violacé
  Tryngites subruficollis (Vieillot, 1819) -- invalid -- Playero leonado, Buff-breasted Sandpiper, Bécasseau roussâtre
  Turdus assimilis Cabanis, 1850 -- valid -- Mirlo garganta blanca, White-throated Robin, White-throated Thrush
  Turdus grayi Bonaparte, 1838 -- valid -- Clay-colored Robin, Mirlo pardo, Clay-colored Thrush
  Turdus graysoni (Ridgway, 1882) -- invalid -- Mirlo nayarita, Grayson's Thrush
  Turdus infuscatus (Lafresnaye, 1844) -- valid -- Mirlo negro, Black Thrush, Black Robin
  Turdus migratorius Linnaeus, 1766 -- valid -- Mirlo primavera, American Robin, merle d'Amérique
  Turdus plebejus Cabanis, 1861 -- valid -- Mirlo plebeyo, Mountain Robin, Mountain Thrush
  Turdus rufitorques Hartlaub, 1844 -- valid -- Mirlo cuello rufo, Rufous-collared Robin, Rufous-collared Thrush
  Turdus rufopalliatus Lafresnaye, 1840 -- valid -- Rufous-backed Robin, Mirlo dorso rufo
  Turdus rufopalliatus graysoni (Ridgway, 1882) -- valid -- Mirlo nayarita, Grayson's Thrush
  Tursiops truncatus (Montagu, 1821) -- valid -- Bottlenose Dolphin, Bottlenosed Dolphin, Delfín tonina, common bottlenose dolphin
  Typhlops microstomus Cope, 1866 -- invalid -- Serpiente-ciega yucateca
  Tyrannus couchii S. F. Baird, 1858 -- valid -- Couch's Kingbird, Tirano silbador
  Tyrannus crassirostris Swainson, 1826 -- valid -- Thick-billed Kingbird, Tirano pico grueso
  Tyrannus cubensis Richmond, 1898 -- valid -- Giant Kingbird, Tirano cubano
  Tyrannus dominicensis (Gmelin, 1788) -- valid -- Gray Kingbird, Tirano gris, Grey Kingbird
  Tyrannus forficatus (Gmelin, 1789) -- valid -- Tirano-tijereta rosado, Scissor-tailed Flycatcher, tyran à longue queue
  Tyrannus melancholicus Vieillot, 1819 -- valid -- Tirano tropical, Tropical Kingbird
  Tyrannus savana Vieillot, 1808 -- valid -- Tirano-tijereta gris, Fork-tailed Flycatcher, tyran des savanes
  Tyrannus tyrannus (Linnaeus, 1758) -- valid -- Tirano dorso negro, Eastern Kingbird, tyran tritri
  Tyrannus verticalis Say, 1823 -- valid -- Tirano pálido, Western Kingbird, tyran de l'ouest
  Tyrannus vociferans Swainson, 1826 -- valid -- Cassin's Kingbird, Tirano gritón
  Tyto alba (Scopoli, 1769) -- valid -- Common Barn-Owl, Lechuza de campanario, Barn Owl, effraie de clochers, Western Barn Owl
  Uma exsul K. P. Schmidt and Bogert, 1947 -- valid -- Lagartija-arenera proscrita, Fringe-toed Sand Lizard
  Uma notata Baird, 1859 -- valid -- Colorado Desert Fringe-toed Lizard, Lagartija-arenera del Colorado
  Uma paraphygas Williams, Chrapliwy and H. M. Smith, 1959 -- valid -- Lagartija-arenera de Chihuahua, Chihuahuan Fringe-toed Lizard
  Ungaliophis continentalis Müller, 1880 -- valid -- Boa-enana del Istmo
  Uria aalge (Pontoppidan, 1763) -- valid -- Arao común, Common Murre, Guillemot marmette, airo, Common Guillemot
  Urocyon cinereoargenteus (Schreber, 1775) -- valid -- Gray Fox, Zorra gris, Common Gray Fox, renard gris
  Uropsila leucogastra (Gould, 1837) -- valid -- Chivirín vientre blanco, White-bellied Wren
  Urosaurus auriculatus (Cope, 1871) -- valid -- Lagartija-arbolera de Socorro, Socorro Island Tree Lizard
  Urosaurus bicarinatus (A. H. A. Duméril, 1856) -- valid -- Lagartija-arbolera tropical, Tropical Tree Lizard
  Urosaurus clarionensis (Townsend, 1890) -- valid -- Lagartija-arbolera de Clarion, Clarion Island Tree Lizard
  Urosaurus gadovi (K. P. Schmidt, 1921) -- valid -- Lagartija-arbolera de Gadow, Gadow's Tree Lizard
  Urosaurus graciosus Hallowell, 1854 -- valid -- Long-tailed Brush Lizard, Lagartija-arbolera cola larga
  Urosaurus irregularis (Fischer, 1882) -- invalid -- Lagartija-arbolera mexicana
  Urosaurus lahtelai Rau and Loomis, 1977 -- valid -- Lagartija-arbolera de Baja California, Baja California Brush Lizard
  Urosaurus microscutatus (Van Denburgh, 1894) -- invalid -- Small-scaled Lizard, Lagartija-arbolera escamas chicas
  Urosaurus nigricaudus (Cope, 1864) -- valid -- Baja California Brush Lizard, Lagartija-arbolera cola negra, Small-scaled Lizard
  Urosaurus ornatus (Baird in Baird and Girard, 1852) -- valid -- Tree Lizard, Ornate Tree Lizard, Lagartija-arbolera común
  Urotheca elapoides (Cope, 1860) -- invalid -- Culebra-imita coral común
  Ursus americanus Pallas, 1780 -- valid -- American Black Bear, black bear, Oso negro, ours noir
  Ursus arctos Linnaeus, 1758 -- valid -- Brown Bear, Grizzly Bear, Oso pardo
  Uta antiqua Ballinger and Tinkle, 1968 -- invalid -- Lagartija-costado manchado de San Lorenzo
  Uta concinna Dickerson, 1919 -- invalid -- Lagartija-costado manchado antigua
  Uta mannophora Dickerson, 1919 -- invalid -- Lagartija-costado manchado adornada
  Uta nolascensis Van Denburgh and Slevin, 1921 -- valid -- Lagartija-costado manchado o de Nolasco
  Uta palmeri Stejneger, 1890 -- valid -- Lagartija-costado manchado o de San Pedro, San Pedro Side-blotched Lizard
  Uta squamata Dickerson, 1919 -- valid -- Lagartija-costado manchado de Santa Catalina
  Uta stansburiana Baird and Girard, 1852 -- valid -- Side-blotched Lizard, Common Side-blotched Lizard, Lagartija-costado manchado común
  Veniliornis fumigatus (d'Orbigny, 1840) -- invalid -- Carpintero café, Smoky-brown Woodpecker
  Vermivora celata (Say, 1822) -- invalid -- Chipe corona naranja, Orange-crowned Warbler, paruline verdâtre
  Vermivora chrysoptera (Linnaeus, 1766) -- valid -- Chipe ala dorada, Paruline à ailes dorées, Golden-winged Warbler
  Vermivora crissalis (Salvin & Godman, 1889) -- invalid -- Colima Warbler, Chipe crisal
  Vermivora luciae (J. G. Cooper, 1861) -- invalid -- Lucy's Warbler, Chipe rabadilla rufa
  Vermivora peregrina (A. Wilson, 1811) -- invalid -- Chipe peregrino, Tennessee Warbler, paruline obscure
  Vermivora pinus (Linnaeus, 1766) -- invalid -- Chipe ala azul, Blue-winged Warbler, paruline à ailes bleues
  Vermivora ruficapilla (A. Wilson, 1811) -- invalid -- Chipe de coronilla, Nashville Warbler, paruline à joues grises
  Vermivora virginiae (S. F. Baird, 1860) -- invalid -- Chipe de Virginia, Virginia's Warbler
  Vireo altiloquus (Vieillot, 1808) -- valid -- Black-whiskered Vireo, Vireo bigotudo
  Vireo atricapilla Woodhouse, 1852 -- valid -- black-capped vireo, Vireo gorra negra
  Vireo atricapillus Woodhouse, 1852 -- invalid -- Vireo gorra negra
  Vireo bairdi Ridgway, 1885 -- valid -- Vireo de Cozumel, Cozumel Vireo
  Vireo bellii Audubon, 1844 -- valid -- Bell's Vireo, Vireo de Bell
  Vireo brevipennis (P. L. Sclater, 1858) -- valid -- Vireo pizarra, Slaty Vireo
  Vireo cassinii Xantus de Vesey, 1858 -- valid -- Vireo de Cassin, Cassin's Vireo
  Vireo flavifrons Vieillot, 1808 -- valid -- Vireo garganta amarilla, Yellow-throated Vireo, viréo à gorge jaune
  Vireo flavoviridis (Cassin, 1851) -- valid -- Vireo verdeamarillo, Yellow-green Vireo
  Vireo gilvus (Vieillot, 1808) -- valid -- Vireo gorjeador, Warbling Vireo, viréo mélodieux
  Vireo griseus (Boddaert, 1783) -- valid -- Vireo ojo blanco, White-eyed Vireo, viréo aux yeux blancs
  Vireo huttoni Cassin, 1851 -- valid -- Hutton's Vireo, Vireo reyezuelo
  Vireo hypochryseus P. L. Sclater, 1863 -- valid -- Vireo dorado, Golden Vireo
  Vireo leucophrys (Lafresnaye, 1844) -- valid -- Vireo gorra parda, Brown-capped Vireo
  Vireo magister (S. F. Baird, 1871) -- valid -- Vireo yucateco, Yucatan Vireo
  Vireo nelsoni Bond, 1936 -- valid -- Vireo enano, Dwarf Vireo
  Vireo olivaceus (Linnaeus, 1766) -- valid -- Vireo ojo rojo, Red-eyed Vireo, viréo aux yeux rouges
  Vireo pallens Salvin, 1863 -- valid -- Vireo manglero, Mangrove Vireo
  Vireo philadelphicus (Cassin, 1851) -- valid -- Vireo de Filadelfia, Philadelphia Vireo, viréo de Philadelphie
  Vireo plumbeus Coues, 1866 -- valid -- Vireo plomizo, Plumbeous Vireo
  Vireo solitarius (A. Wilson, 1810) -- valid -- Solitary Vireo, Vireo anteojillo, Blue-headed Vireo, viréo à tête bleue
  Vireo vicinior Coues, 1866 -- valid -- Gray Vireo, Vireo gris, Grey Vireo
  Vireolanius melitophrys Bonaparte, 1850 -- valid -- Vireón pecho castaño, Chestnut-sided Shrike-Vireo
  Vireolanius pulchellus P. L. Sclater & Salvin, 1859 -- valid -- Vireón esmeralda, Green Shrike-Vireo
  Volatinia jacarina (Linnaeus, 1766) -- valid -- Semillero brincador, Blue-black Grassquit, Jacarini noir, Semillero volatinero, tiziu
  Vulpes velox (Say, 1823) -- valid -- Swift Fox, Zorra desértica
  Wilsonia canadensis (Linnaeus, 1766) -- invalid -- Chipe de collar, Canada Warbler, paruline du Canada
  Wilsonia citrina (Boddaert, 1783) -- invalid -- Chipe encapuchado, Hooded Warbler, paruline à capuchon
  Wilsonia pusilla (A. Wilson, 1811) -- invalid -- Chipe corona negra, Wilson's Warbler, paruline à calotte noire
  Xanthocephalus xanthocephalus (Bonaparte, 1826) -- valid -- Yellow-headed Blackbird, Yellow-headed Blackbird, carouge à tête jaune
  Xantusia bolsonae Webb, 1970 -- valid -- Lagartija-escofina de Mapimí, Bolson Night Lizard
  Xantusia henshawi Stejneger, 1893 -- valid -- Granite Night Lizard, Henshaw's Night Lizard, Lagartija-escofina de granito
  Xantusia vigilis Baird, 1859 -- valid -- Desert Night Lizard, Lagartija-escofina de desierto
  Xema sabini (Sabine, 1819) -- valid -- Gaviota cola hendida, Sabine's Gull, Mouette de Sabine, Gaviota de Sabine, gaivota-de-sabine
  Xenodon rabdocephalus (Wied-Neuwied, 1824) -- valid -- Culebra-engañosa norteña, False Fer-de-lance
  Xenops minutus (Sparrman, 1788) -- valid -- Plain Xenops, Picolezna liso
  Xenopus laevis (Daudin, 1802) -- valid -- African Clawed Frog, Rana-de garras africana
  Xenosaurus grandis (Gray, 1856) -- valid -- Xenosaurio mayor, Knob-scaled Lizard
  Xenosaurus newmanorum Taylor, 1949 -- valid -- Xenosaurio de Newman, Newman's Knob-scaled Lizard
  Xenosaurus platyceps King and Thompson, 1968 -- valid -- Xenosaurio cabeza plana, Flathead Knob-scaled Lizard
  Xenospiza baileyi Bangs, 1931 -- valid -- Gorrión serrano, Sierra Madre Sparrow, Bruant des sierras, Chingolo serrano
  Xenotriccus callizonus Dwight & Griscom, 1927 -- valid -- Belted Flycatcher, Mosquero fajado
  Xenotriccus mexicanus (Zimmer, 1938) -- valid -- Pileated Flycatcher, Mosquero del Balsas
  Xiphocolaptes promeropirhynchus (Lesson, 1840) -- valid -- Strong-billed Woodcreeper
  Xiphorhynchus erythropygius (P. L. Sclater, 1860) -- valid -- Spotted Woodcreeper
  Xiphorhynchus flavigaster Swainson, 1827 -- valid -- Ivory-billed Woodcreeper, Trepatroncos bigotudo
  Zalophus californianus (Lesson, 1828) -- valid -- California Sealion, Lobo-marino californiano, California sea lion
  Zenaida asiatica (Linnaeus, 1758) -- valid -- Paloma ala blanca, White-winged Dove, tourterelle à ailes blanches
  Zenaida aurita (Temminck, 1809) -- valid -- Zenaida Dove, Paloma aurita
  Zenaida graysoni (Lawrence, 1871) -- valid -- Paloma de Socorro, Socorro Dove
  Zenaida macroura (Linnaeus, 1758) -- valid -- Paloma huilota, Mourning Dove, tourterelle triste
  Zimmerius vilissimus (P. L. Sclater & Salvin, 1859) -- valid -- Paltry Tyrannulet, Mosquero ceja gris
  Ziphius cavirostris G. Cuvier, 1823 -- valid -- goose-beaked whale, Cuvier's Beaked Whale, goosebeak whale, Ballena-picuda de Couvier
  Zonotrichia albicollis (J. F. Gmelin, 1789) -- valid -- Chingolo gorjiblanco, chingolito, Gorrión garganta blanca, White-throated Sparrow, bruant à gorge blanche
  Zonotrichia atricapilla (J. F. Gmelin, 1789) -- valid -- Bruant à couronne dorée, Chingolo coronidorado, tico-tico-coroa-dourada, Golden-crowned Sparrow, Gorrión corona dorada
  Zonotrichia capensis (P. L. S. Müller, 1776) -- valid -- Gorrión chingolo, Rufous-collared Sparrow, Bruant chingolo, Chingolo común, tico-tico
  Zonotrichia leucophrys (J. R. Forster, 1772) -- valid -- Chingolo coroniblanco, tico-tico-coroado, White-crowned Sparrow, bruant à couronne blanche, Gorrión corona blanca
 
 Kingdom Plantae
  Abies concolor (Gordon & Glend.) Lindl. ex Hildebr. -- accepted -- balsam fir, silver fir, Colorado fir, concolor fir, white balsam, oyamel de California, white fir
  Abies guatemalensis Rehder -- accepted -- Guatemalan fir, pinabete, oyamel de Guatemala
  Acanthocereus tetragonus (L.) Hummelinck -- accepted -- triangle cactus, Órgano-alado de pitaya
  Aechmea nudicaulis (L.) Griseb. -- accepted -- Aechmea desnuda, nakedstem livingvase
  Agave americana L. -- accepted -- American century plant, American agave, Maguey americano, centuryplant
  Agave angustifolia Haw. -- accepted -- century plant, Maguey espadín
  Agave asperrima Jacobi -- accepted -- rough century plant, Maguey áspero
  Agave atrovirens Karw. ex Salm-Dyck -- accepted -- maguey, Maguey de montaña
  Agave cantala Roxb. -- accepted -- cantala, Maguey de la India
  Agave deserti Engelm. -- accepted -- desert agave, Maguey de Desierto
  Agave desmettiana Jacobi -- accepted -- dwarf century plant, Maguey semati
  Agave fourcroydes Lem. -- accepted -- henequen, Maguey henequén
  Agave glomeruliflora (Engelm.) A. Berger -- not accepted -- Chisos Mountain century plant, Chisos agave, Maguey del Bravo
  Agave gracilipes Trel. -- accepted -- slimfoot century plant, Maguey de pastizal
  Agave havardiana Trel. -- accepted -- Havard's century plant, Maguey de Havard
  Agave lechuguilla Torr. -- not accepted -- lechuguilla, Maguey lechuguilla, lecheguilla
  Agave lophantha Schiede -- not accepted -- thorncrest century plant, Maguey mezortillo
  Agave murpheyi F. Gibson -- accepted -- Murphey's century plant, Murphey agave, Maguey bandeado
  Agave neomexicana Wooton & Standl. -- not accepted -- Maguey de Nuevo México
  Agave palmeri Engelm. -- accepted -- Palmer's century plant, Maguey de tlalcoyote, Palmer agave, Palmer century plant
  Agave parryi Engelm. -- accepted -- Parry's agave, Parry agave, Mezcal yapavai
  Agave parviflora Torr. -- accepted -- smallflower century plant, smallflower agave, Maguey sóbari
  Agave schottii Engelm. -- accepted -- Schott's century plant, Maguey puercoespín, Schott agave
  Agave shawii Engelm. -- accepted -- coastal agave, Shaw's agave, Maguey primavera
  Agave sisalana Perrine -- accepted -- sisal hemp, Maguey de Sisal, sisal
  Agave tequilana F.A.C. Weber -- accepted -- Mezcal azul tequilero, tequila agave
  Agave weberi F. Cels ex J. Poiss. -- accepted -- Weber's century plant, Maguey liso
  Agave xylonacantha Salm-Dyck -- accepted -- century plant, Maguey diente de tiburón
  Ananas comosus (L.) Merr. -- accepted -- Piña, pineapple
  Ariocarpus fissuratus (Engelm.) K. Schum. -- accepted -- chautle livingrock, Biznaga peyotillo
  Ariocarpus retusus Scheidw. -- accepted -- Biznaga-maguey peyote cimarrón
  Astrophytum asterias (Zucc.) Lem. -- accepted -- sanddollar, Biznaga-algononcillo de estrella, seaurchin starcactus, star cactus
  Beloglottis costaricensis (Rchb. f.) Schltr. -- accepted -- Trencita de Costa Rica, Costa Rican lady's tresses
  Bergerocactus emoryi (Engelm.) Britton & Rose -- accepted -- golden snakecactus, Órgano aterciopelado
  Bletia purpurea (Lam.) DC. -- accepted -- Bletia común, pinepink
  Brassavola cucullata (L.) R. Br. -- accepted -- Brassavola colgante, daddy longlegs orchid
  Brassavola nodosa (L.) Lindl. -- accepted -- Brassavola común, lady of the night orchid
  Brassia caudata (L.) Lindl. -- accepted -- Brassia araña, cricket orchid
  Bromelia pinguin L. -- accepted -- Piñuela timbiriche, pinguin
  Bromelia plumieri (E. Morren) L.B. Sm. -- accepted -- Plumier's bromelia, Piñuela aguama cazuela
  Campylocentrum micranthum (Lindl.) Maury -- accepted -- Campylocentrum mayor, fairy bentspur orchid
  Carnegiea gigantea (Engelm.) Britton & Rose -- accepted -- Saguaro, saguaro
  Catopsis berteroniana (Schult. & Schult. f.) Mez -- accepted -- Catopsis de Bertero, powdery strap airplant
  Catopsis nitida (Hook.) Griseb. -- accepted -- Catopsis brillante, Caribbean strap airplant
  Catopsis nutans (Sw.) Griseb. -- accepted -- Catopsis flores acostadas, nodding strap airplant
  Catopsis sessiliflora (Ruiz & Pav.) Mez -- accepted -- Catopsis flores fijas, sessileleaf strap airplant
  Chamaedorea elegans Mart. -- accepted -- parlor palm, Tepejilote cambray
  Chamaedorea seifrizii Burret -- accepted -- Seifriz's chamaedorea, Camedor xiat, bamboo palm
  Cochleanthes flabelliformis (Sw.) R.E. Schult. & Garay -- accepted -- Cochleanthes de abanico, fanshape orchid
  Cocos nucifera L. -- accepted -- niu, ololani, cocotier, coconut palm, Palma de Coco
  Coelia triptera auct. non (Sm.) G. Don ex Steud. -- not accepted -- threewing coelia, Coelia blanca
  Comparettia falcata Poepp. & Endl. -- accepted -- Comparettia rosada, snail orchid
  Corallorrhiza maculata (Raf.) Raf. -- not accepted -- Raíz-de-coral manchada, spotted coralroot, summer coralroot
  Corallorrhiza wisteriana Conrad -- not accepted -- Raíz-de-coral primaveral, coralroot, spring coralroot
  Corymborkis forcipigera (Rchb. f. & Warsz.) L.O. Williams -- accepted -- lime orchid, Corymborkis selvática
  Coryphantha cornifera (DC.) Lem. -- accepted -- Biznaga-partida de cuernos, rhinoceros cactus
  Coryphantha echinus (Engelm.) Britton & Rose -- not accepted -- Biznaga-partida erizo, rhinoceros cactus
  Coryphantha macromeris (Engelm.) Lem. -- accepted -- Biznaga-partida partida, nipple beehive cactus
  Coryphantha nickelsiae (K. Brandegee) Britton & Rose -- accepted -- Biznaga-partida de Laredo, Nickels' cactus
  Coryphantha recurvata (Engelm.) Britton & Rose -- accepted -- Biznaga-partida de espinas curvas, Santa Cruz beehive cactus
  Coryphantha robustispina (A. Schott ex Engelm.) Britton & Rose -- accepted -- Biznaga-partida de espinas gruesas
  Coryphantha scheeri (Muehlenpf.) L.D. Benson -- not accepted -- Biznaga-partida mula, Scheer's beehive cactus, beehive coryphantha
  Cranichis diphylla Sw. -- accepted -- Cranichis bifoliada
  Cupressus arizonica Greene -- not accepted -- Arizona smooth cypress, cedro, cedro blanco, ciprés de Arizona, Cuyamaca cypress, Piute cypress, ciprés fibrosa, Arizona cypress
  Cupressus forbesii Jeps. -- not accepted -- Forbes cypress, ciprés negro, Tecate cypress
  Cupressus guadalupensis S. Watson -- not accepted -- ciprés brillante
  Dasylirion leiophyllum Engelm. ex Trel. -- accepted -- Sotol brillante, smooth sotol, green sotol
  Dasylirion texanum Scheele -- accepted -- Sotol texano, Texas sotol
  Dasylirion wheeleri S. Watson -- accepted -- Sotol de desierto, sotol, common sotol
  Dichromanthus cinnabarinus (La Llave & Lex.) Garay -- accepted -- Cutzis cinabarino, scarlet lady's tresses
  Echinocactus horizonthalonius Lem. -- accepted -- Biznaga-tonelmancamula, devilshead, silverbell cactus, Turk's head cactus
  Echinocactus polycephalus Engelm. & J.M. Bigelow -- accepted -- Biznaga-tonel amacollada, cottontop cactus, cottontop barrel cactus
  Echinocactus texensis Hopffer -- accepted -- Biznaga-tonel manca caballo, horse crippler, devil's pincushion
  Echinocereus berlandieri (Engelm.) J.N. Haage -- accepted -- Órgano-pequeño de Berlandier, Berlandier's hedgehog cactus
  Echinocereus chisoensis W.T. Marshall -- not accepted -- Órgano-pequeño chiso, Chisos Mountain hedgehog cactus, chisos lace cactus
  Echinocereus chloranthus (Engelm.) J.N. Haage -- not accepted -- Órgano-pequeño de flor verde, brownspine hedgehog cactus
  Echinocereus coccineus Engelm. -- accepted -- Órgano-pequeño de espinas escarlatas, scarlet hedgehog cactus
  Echinocereus dasyacanthus Engelm. -- accepted -- Órgano-pequeño arcoiris de Texas, spiny hedgehog cactus
  Echinocereus engelmannii (Parry ex Engelm.) Lem. -- accepted -- Órgano-pequeño fresa, Engelmann's hedgehog cactus, strawberry cactus
  Echinocereus enneacanthus Engelm. -- accepted -- Órgano-pequeño alicoche real, pitaya, smallspine pitaya
  Echinocereus fasciculatus (Engelm. ex B.D. Jacks.) L.D. Benson -- accepted -- Órgano-pequeño de manojos
  Echinocereus fendleri (Engelm.) Rümpler -- not accepted -- Órgano-pequeño de Nuevo México, pinkflower hedgehog cactus, Fendler's hedgehog cactus
  Echinocereus papillosus Linke ex Rümpler -- accepted -- Órgano-pequeño cardoncillo, Allicoche hedgehog cactus
  Echinocereus pectinatus (Scheidw.) Engelm. -- accepted -- Órgano-pequeño peine, rainbow cactus
  Echinocereus pentalophus (DC.) Lem. -- accepted -- Órgano-pequeño alicoche falso, ladyfinger cactus
  Echinocereus polyacanthus Engelm. -- accepted -- Órgano-pequeño enmarañado, Mojave mound cactus
  Echinocereus poselgeri Lem. -- accepted -- Órgano-pequeño sacasil, dahlia hedgehog cactus
  Echinocereus reichenbachii (Terscheck ex Walp.) J.N. Haage -- accepted -- Órgano-pequeño de colores, lace hedgehog cactus
  Echinocereus russanthus D. Weniger -- accepted -- Órgano-pequeño chiso, brownspine hedgehog cactus, rusty hedgehog cactus
  Echinocereus stramineus (Engelm.) F. Seitz -- accepted -- Órgano-pequeño sanjuanero, strawberry hedgehog cactus
  Echinocereus triglochidiatus Engelm. -- accepted -- Órgano-pequeño copa de vino, kingcup cactus, claretcup hedgehog, Mojave mound cactus
  Encyclia cochleata (L.) Dressler -- not accepted -- Encyclia pulpito, clamshell orchid
  Encyclia gravida (Lindl.) Schltr. -- not accepted -- Encyclia grávida, heavyfruit butterfly orchid
  Encyclia pygmaea (Hook.) Dressler -- not accepted -- Encyclia pigmea, dwarf butterfly orchid
  Epidendrum ciliare L. -- accepted -- Epidendrum ciliado, fringed star orchid
  Epidendrum conopseum R. Br. -- not accepted -- Epidendrum del norte, green fly orchid
  Epidendrum latifolium (Lindl.) Garay & H.R. Sweet -- not accepted -- Epidendrum de hoja amplia, broadleaf star orchid
  Epidendrum nocturnum Jacq. -- accepted -- Epidendrum nocturno, dama de noche, night scented orchid
  Epidendrum pseudoramosum Schltr. -- accepted -- Epidendrum ramificado, grand star orchid
  Epidendrum radicans Pav. ex Lindl. -- accepted -- fire star orchid, Epidendrum de los caminos
  Epidendrum ramosum Jacq. -- accepted -- Epidendrum ramoso, mountain star orchid
  Epidendrum rigidum Jacq. -- accepted -- Epidendrum rigido, stiff flower star orchid
  Epidendrum strobiliferum Rchb. f. -- accepted -- big cypress star orchid, Epidendrum de estróbilo
  Epipactis gigantea Douglas ex Hook. -- accepted -- Heleborina gigante, giant helleborine, stream orchid
  Epiphyllum hookeri Haw. -- accepted -- nightblooming cactus, Nopalillo de Hooker
  Epiphyllum oxypetalum (DC.) Haw. -- accepted -- Nopalillo criollo, Dutchman's pipe cactus
  Epithelantha bokei L.D. Benson -- accepted -- Biznaga-blanca de Boquillas, Boke's button cactus
  Epithelantha micromeris (Engelm.) A. Weber ex Britton & Rose -- accepted -- Biznaga-blanca chilona, pingpong ball cactus
  Escobaria chaffeyi Britton & Rose -- not accepted -- Biznaga-Escobar de Cedros
  Escobaria dasyacantha (Engelm.) Britton & Rose -- accepted -- Biznaga-Escobar de espinas gruesas, Big Bend foxtail cactus
  Escobaria emskoetteriana (Quehl) Borg -- accepted -- Biznaga-Escobar de Emskoetter, junior Tom Thumb cactus
  Escobaria tuberculosa (Engelm.) Britton & Rose -- accepted -- Biznaga-Escobar rómbica, white column foxtail cactus
  Eulophia alta (L.) Fawc. & Rendle -- accepted -- wild coco, Eulophia alta
  Ferocactus cylindraceus (Engelm.) Orcutt -- accepted -- Biznaga-barril cilíndrica, California barrel cactus
  Ferocactus emoryi (Engelm.) Orcutt -- accepted -- Biznaga-barril de Emory, Emory's barrel cactus
  Ferocactus hamatacanthus (Muehlenpf.) Britton & Rose -- accepted -- Biznaga-barril costillona, Turk's head
  Ferocactus lecontei (Engelm.) Britton & Rose -- not accepted -- Biznaga-barril de Gila
  Ferocactus viridescens (Torr. & A. Gray) Britton & Rose -- accepted -- Biznaga-barril verdosa, San Diego barrel cactus, coast barrel cactus
  Ferocactus wislizeni (Engelm.) Britton & Rose -- accepted -- Biznaga-barril de Nuevo México, candy barrel cactus, fishhook barrel cactus
  Goodyera oblongifolia Raf. -- accepted -- western rattlesnake plantain, rattlesnake plantain, Goodyera del norte
  Govenia liliacea Lindl. -- not accepted -- Govenia liliácea
  Guzmania lingulata (L.) Mez -- accepted -- Guzmania lenguada, droophead tufted airplant
  Habenaria alata Hook. -- accepted -- Habenaria alada, winged bog orchid
  Habenaria distans Griseb. -- accepted -- hammock bog orchid, Habenaria arrosetada
  Habenaria eustachya Rchb. f. -- accepted -- Habenaria grande, woodland bog orchid
  Habenaria floribunda Lindl. -- accepted -- toothpetal bog orchid, Habenaria azulosa
  Habenaria monorrhiza (Sw.) Rchb. f. -- accepted -- Habenaria de caminos, tropical bog orchid
  Habenaria quinqueseta (Michx.) Eaton -- accepted -- longhorn bog orchid, Habenaria blanca, longhorn false reinorchid
  Habenaria repens Nutt. -- accepted -- waterspider false reinorchid, Habenaria acuática, waterspider bog orchid
  Habenaria strictissima Rchb. f. -- accepted -- Habenaria angosta
  Hechtia glomerata Zucc. -- accepted -- Guapilla flores amontonadas, guapilla
  Hechtia texensis S. Watson -- accepted -- Guapilla de Texas, Texas false agave
  Hesperaloe funifera (K. Koch) Trel. -- accepted -- Samandoque común, New Mexico falseyucca, New Mexico false yucca
  Hesperaloe parviflora (Torr.) J.M. Coult. -- accepted -- Samandoque flor roja, redflower falseyucca, redflower false yucca
  Hexalectris grandiflora (A. Rich. & Galeotti) L.O. Williams -- accepted -- Raíz-de-coral rosada, Greenman's hexalectris, largeflower crested coralroot
  Hexalectris nitida L.O. Williams -- accepted -- Glass Mountain coral-root, Glass Mountain crested coralroot, Raíz-de-coral nítida
  Hexalectris revoluta Correll -- accepted -- Raíz de coral revoluta, Chisos coral-root, Chisos Mountain crested coralroot
  Hexalectris spicata (Walter) Barnhart -- accepted -- Raíz-de-coral crestada, crested coralroot, spiked crested-coralroot, spiked crested coralroot
  Hexalectris warnockii Ames & Correll -- accepted -- Texas crested coralroot, Raíz-de-Coral de Texas, Texas crested-coralroot
  Hylocereus undatus (Haw.) Britton & Rose -- accepted -- Pitahaya orejona, nightblooming cactus
  Ionopsis satyrioides (Sw.) Rchb. f. -- accepted -- fleshyleaf violet orchid, Ionopsis carnosa
  Ionopsis utricularioides (Sw.) Lindl. -- accepted -- delicate violet orchid, Ionopsis delicado
  Isochilus linearis (Jacq.) R. Br. -- accepted -- Cresta-de-gallo delgada, narrowleaf equallip orchid
  Jacquiniella globosa (Jacq.) Schltr. -- accepted -- redblotch tufted orchid, Jacquiniella globosa
  Jacquiniella teretifolia (Sw.) Britton & P. Wilson -- accepted -- Jacquiniella carnosa, moss tufted orchid
  Juniperus ashei J. Buchholz -- accepted -- Ashe juniper, enebro de monte, Ashe's juniper
  Juniperus californica Carrière -- accepted -- enebro de california, California juniper
  Juniperus deppeana Steud. -- accepted -- alligator juniper, enebro chino, checker bark juniper
  Juniperus deppeana var. pachyphlaea (Torr.) Martínez -- not accepted -- enebro aborí
  Juniperus erythrocarpa auct. non Cory -- not accepted -- redberry juniper, enebro agoriza
  Juniperus flaccida Schltdl. -- accepted -- drooping juniper, enebro liso
  Juniperus monosperma (Engelm.) Sarg. -- accepted -- oneseed juniper, enebro de sombra
  Juniperus pinchotii Sudw. -- accepted -- Pinchot juniper, enebro de fruto rojo, Pinchot's juniper, redberry juniper
  Juniperus scopulorum Sarg. -- accepted -- enebro riparío, Rocky Mountain juniper
  Leochilus labiatus (Sw.) Kuntze -- accepted -- Leochilus de labio, green smoothlip orchid, lipped orchid
  Libocedrus decurrens Torr. -- not accepted -- cedro de incienso
  Liparis elata Lindl. -- not accepted -- Liparis hojosa, pantropical widelip orchid
  Liparis vexillifera (La Llave & Lex.) Cogn. -- accepted -- Liparis bandera, tropical widelip orchid
  Lophocereus schottii (Engelm.) Britton & Rose -- not accepted -- Senita
  Lophophora williamsii (Lem. ex Salm-Dyck) J.M. Coult. -- accepted -- Peyote, peyote
  Malaxis ehrenbergii (Rchb. f.) Kuntze -- accepted -- Ehrenberg's adder's-mouth orchid, Ehrenberg's addersmouth orchid, Malaxis de Ehrenberg
  Malaxis soulei L.O. Williams -- not accepted -- Chiricahua adder's-mouth orchid, Malaxis de montaña
  Malaxis unifolia Michx. -- accepted -- Malaxis unifolia, green addersmouth orchid, green adder's-mouth orchid
  Mammillaria bella Backeb. -- not accepted -- Biznaga bella
  Mammillaria dioica K. Brandegee -- accepted -- Biznaga llavina, strawberry cactus
  Mammillaria gummifera Engelm. -- not accepted -- Biznaga lechosa
  Mammillaria heyderi Muehlenpf. -- accepted -- Heyder's pincushion cactus, Biznaga china, little nipple cactus
  Mammillaria lasiacantha Engelm. -- accepted -- small pincushion cactus, Biznaga de espinas pubescentes, lacespine nipple cactus
  Mammillaria mainiae K. Brandegee -- accepted -- Maine pincushion cactus, Biznaga de Nogales, counterclockwise nipple cactus
  Mammillaria meiacantha Engelm. -- accepted -- Biznaga de pocas espinas
  Mammillaria milleri (Britton & Rose) Boed. -- not accepted -- Biznaga de Miller
  Mammillaria multiceps Salm-Dyck -- not accepted -- Biznaga de muchas cabezas
  Mammillaria oliviae Orcutt -- not accepted -- Biznaga chollo chico
  Mammillaria pottsii Scheer ex Salm-Dyck -- accepted -- Biznaga de Potts, rattail nipple cactus
  Mammillaria prolifera (Mill.) Haw. -- accepted -- Biznaga prolifera, Texas nipple cactus
  Mammillaria sphaerica A. Dietr. -- accepted -- Biznaga esférica, longmamma nipple cactus, longspine nipple cactus
  Mammillaria tetrancistra Engelm. -- accepted -- corkseed pincushion cactus, Biznaga de cuatro ganchos, common fishhook cactus
  Mammillaria thornberi Orcutt -- accepted -- Thornber's pincushion cactus, Biznaga de Thornber, Thornber's nipple cactus
  Mammillaria viridiflora (Britton & Rose) Cory -- accepted -- Biznaga de flor verde, greenflower nipple cactus
  Mammillaria wilcoxii Toumey ex K. Schum. -- not accepted -- Biznaga de Wilcox
  Mammillaria wrightii Engelm. -- accepted -- Wright's pincushion cactus, Biznaga de Wright, Wright's nipple cactus
  Manfreda longiflora (Rose) Verh-Will. -- accepted -- longflower tuberose, Runyon huaco, Amole de río
  Manfreda maculosa (Hook.) Rose -- accepted -- spice lily, Amole de culebra
  Manfreda variegata (Jacobi) Rose -- accepted -- mottled tuberose, Amole akayman
  Manfreda virginica (L.) Salisb. ex Rose -- accepted -- false aloe, Amole de Virginia
  Maxillaria acutifolia Lindl. -- not accepted -- Maxillaria aguda, rufous tiger orchid
  Maxillaria crassifolia (Lindl.) Rchb. f. -- accepted -- hidden orchid, Maxillaria crasa
  Mesadenus lucayanus (Britton) Schltr. -- accepted -- Spiranthes lucayana, Florida Keys ladies'-tresses
  Mesadenus polyanthus (Rchb. f.) Schltr. -- accepted -- Spiranthes multiflora
  Neolloydia conoidea (DC.) Britton & Rose -- accepted -- Biznaga-cónica, Chihuahuan beehive
  Nolina affinis Trel. -- not accepted -- Palmilla fina
  Nolina bigelovii (Torr.) S. Watson -- accepted -- Palmilla de culebra, Bigelow nolina, Bigelow's nolina
  Nolina erumpens (Torr.) S. Watson -- accepted -- Palmilla de Chihuahua, beargrass, foothill beargrass
  Nolina microcarpa S. Watson -- accepted -- Palmilla sacahuista, sacahuista
  Nolina parryi S. Watson -- accepted -- Palmilla de Parry, Parry's sacahuista, Parry's beargrass
  Nolina texana S. Watson -- accepted -- Palmilla texana, sacahuista, Texas sacahuista
  Nopalea cochenillifera (L.) Salm-Dyck -- accepted -- Nopal de cochinilla
  Oncidium cebolleta (Jacq.) Sw. -- accepted -- Oncidium cuerno-de-cabra, queen orchid
  Oncidium ensatum Lindl. -- accepted -- Oncidium de sabana, Latin American orchid, Florida orchid
  Oncidium luridum auct. non Lindl. -- not accepted -- Oncidium pardo
  Opuntia acanthocarpa Engelm. & J.M. Bigelow -- not accepted -- Cholla espinosa, buckhorn cholla
  Opuntia arbuscula Engelm. -- not accepted -- Cholla arbusto, Arizona pencil cholla, pencil cholla
  Opuntia atrispina Griffiths -- accepted -- Nopal calvo, border pricklypear
  Opuntia auberi Pfeiff. -- not accepted
  Opuntia basilaris Engelm. & J.M. Bigelow -- accepted -- Nopal del castor, beavertail pricklypear
  Opuntia bigelovii Engelm. -- not accepted -- Cholla velas de Coyote, teddybear cholla
  Opuntia cantabrigiensis Lynch -- not accepted -- Nopal cuijo, Texas pricklypear
  Opuntia chihuahuensis Rose -- not accepted -- Nopal de Chihuahua, Chihuahua pricklypear
  Opuntia chlorotica Engelm. & J.M. Bigelow -- accepted -- Nopal verdoso, dollarjoint pricklypear, pancake pricklypear
  Opuntia cochenillifera (L.) Mill. -- not accepted -- cochineal cactus, Nopal de cochinilla, cochineal nopal cactus
  Opuntia discata Griffiths -- accepted -- Nopal disco, smallfruit pricklypear
  Opuntia echinocarpa Engelm. & J.M. Bigelow -- not accepted -- Cholla plateada, silver cholla, golden cholla
  Opuntia engelmannii Salm-Dyck -- not accepted -- Nopal de Engelmann, cactus apple, Engelmann's pricklypear
  Opuntia ficus-indica (L.) Mill. -- accepted -- Nopal de Castilla, tuna cactus, Indian-fig
  Opuntia fulgida Engelm. -- not accepted -- jumping cholla, Cholla brillante
  Opuntia grahamii Engelm. -- not accepted -- Cholla de Graham, Graham's pricklypear, devil cholla
  Opuntia humifusa (Raf.) Raf. -- accepted -- Nopal del este, devil's-tongue, pricklypear
  Opuntia hystricina Engelm. & J.M. Bigelow -- not accepted -- Nopal puerco espín
  Opuntia imbricata (Haw.) DC. -- not accepted -- Cholla coyonoxtle, tree cholla, walkingstick cholla
  Opuntia kleiniae DC. -- not accepted -- Cholla tasajillo macho, candle cholla, Klein pencil cholla
  Opuntia kunzei Rose -- not accepted -- Cholla abrojo de Arizona, devil's cholla, dogturd cholla
  Opuntia leptocaulis DC. -- not accepted -- Cholla alfilerillo, Christmas cactus, tesajo cactus
  Opuntia leucotricha DC. -- accepted -- Nopal duraznillo, arborescent pricklypear
  Opuntia lindheimeri Engelm. -- not accepted -- Nopal arrastrado
  Opuntia littoralis (Engelm.) Cockerell -- accepted -- Nopal del litoral, coastal pricklypear
  Opuntia macrocentra Engelm. -- accepted -- Nopal violaceo, purple pricklypear
  Opuntia macrorhiza Engelm. -- accepted -- Nopal raizudo, twistspine pricklypear, grassland pricklypear, plains twistspine pricklypear
  Opuntia mamillata A. Schott ex Engelm. -- not accepted -- Nopal de mamilas
  Opuntia megacantha Salm-Dyck -- not accepted -- Nopal espinudo
  Opuntia oricola Philbrick -- accepted -- Nopal de montaña, chaparral pricklypear
  Opuntia parryi Engelm. -- not accepted -- Cholla de California, brownspined pricklypear
  Opuntia phaeacantha Engelm. -- accepted -- Nopal pardo, tulip pricklypear, brownspine pricklypear
  Opuntia plumbea Rose -- not accepted -- Nopal enano
  Opuntia prolifera Engelm. -- not accepted -- Cholla prolifera, coastal cholla
  Opuntia ramosissima Engelm. -- not accepted -- Cholla diamante, branched pencil cholla, diamond cholla, pencil cholla
  Opuntia rufida Engelm. -- accepted -- Nopal rojizo, blind pricklypear
  Opuntia schottii Engelm. -- not accepted -- Cholla abrojo de Texas, dog cholla, dog cactus
  Opuntia serpentina Engelm. -- not accepted -- Cholla serpentina
  Opuntia spinosior (Engelm.) Toumey -- not accepted -- Cholla tasajillo de Arizona, walkingstick cactus, cane cholla
  Opuntia stricta (Haw.) Haw. -- accepted -- Nopal estricto, erect pricklypear
  Opuntia tomentosa Salm-Dyck -- accepted -- Nopal chamacuerito, woollyjoint pricklypear
  Opuntia trichophora (Engelm. & J.M. Bigelow) Britton & Rose -- not accepted -- Nopal peludito
  Opuntia tunicata (Lehm.) Link & Otto -- not accepted -- Cholla clavellina, thistle cholla, abrojo
  Opuntia versicolor Engelm. ex J.M. Coult. -- not accepted -- Cholla versicolor, staghorn cholla
  Orbignya cohune (Mart.) Dahlgren ex Standl. -- not accepted -- cohune palm, Corozo cohune
  Pelexia adnata (Sw.) Spreng. -- accepted -- Spiranthes adnada, hachuela
  Pinus arizonica Engelm. -- accepted -- pino de Arizona, Arizona pine
  Pinus arizonica var. stormiae Martínez -- accepted -- Arizona pine, pino blanco
  Pinus attenuata Lemmon -- accepted -- knobcone pine, chichonuda
  Pinus ayacahuite C. Ehrenb. -- not accepted -- ayacahuite
  Pinus cembroides Zucc. -- accepted -- Mexican nut pine, nut pine, stone pine, pino piñonero, piñón de Orizaba, Mexican pinyon
  Pinus chiapensis (Martínez) Andresen -- not accepted -- pino de Chiapas
  Pinus chihuahuana Engelm. -- not accepted -- pino de Chihuahua
  Pinus coulteri D. Don -- accepted -- Coulter pine, bigcone pine, pitch pine, pino de brea
  Pinus discolor D.K. Bailey & Hawksw. -- accepted -- border pinyon, piñón de la frontera
  Pinus edulis Engelm. -- accepted -- twoneedle pinyon, nut pine, Colorado pinyon, pinyon, two-leaf pinyon, two-needle pinyon, piñón de Colorado, piñon pine, pinyon pine
  Pinus engelmannii Carrière -- accepted -- Arizona longleaf pine, pino real, Apache pine
  Pinus flexilis E. James -- accepted -- limber pine, Rocky Mountain white pine, pino torcido
  Pinus jeffreyi Balf. -- accepted -- Jeffrey's pine, black pine, pino negro, Jeffrey pine
  Pinus juarezensis Lanner -- not accepted -- piñón de California
  Pinus lambertiana Douglas -- accepted -- sugar pine, California sugar pine, pino de azúcar
  Pinus leiophylla Schiede & Deppe -- accepted -- Chihuahuan pine, pino prieto
  Pinus monophylla Torr. & Frém. -- accepted -- singleleaf pinyon, nut pine, one-leaf pine, piñón simple
  Pinus muricata D. Don -- accepted -- prickle-cone pine, Santa Cruz Island pine, pino peninsular, Bishop pine
  Pinus patula Schiede ex Schltdl. & Cham. -- accepted -- Mexican weeping pine, Pino colorado
  Pinus quadrifolia Parl. ex Sudw. -- accepted -- nut pine, four-needle pinyon, piñón de California, Parry pinyon
  Pinus radiata D. Don -- accepted -- insignis pine, pino quebradizo, Monterey pine
  Pinus remota (Little) D.K. Bailey & Hawksw. -- accepted -- papershell pinyon, pino de papel
  Piperia unalascensis (Spreng.) Rydb. -- not accepted -- Alaska bog orchid, Piperia de Alaska, Alaskan rein-orchid, pipérie d'Unalaska, Alaska rein orchid, slender-spire orchid
  Platanthera brevifolia (Greene) Kraenzl. -- accepted -- Platanthera de hoja corta, shortflower bog orchid, shortflowered bog orchid
  Platanthera limosa Lindl. -- accepted -- Platanthera limosa, Thurber's bog orchid
  Platanthera sparsiflora (S. Watson) Schltr. -- accepted -- sparse-flowered bog orchid, canyon bog orchid, Platanthera de pocas flores
  Pleurothallis gelida Lindl. -- accepted -- Pleurothallis de hielo, flor de llanten
  Pleurothallis pubescens Lindl. -- accepted -- hairy bonnet orchid, Pleurothallis pelosa
  Pleurothallis racemiflora Lindl. ex Hook. -- accepted -- ladies' bonnet orchid, Pleurothallis fragante
  Polianthes tuberosa L. -- accepted -- tuberose, Nardo común
  Polystachya cerea Lindl. -- not accepted -- Polystachya de cera
  Ponthieva racemosa (Walter) C. Mohr -- accepted -- Ponthieva racemosa, hairy shadow witch
  Pseudophoenix sargentii H. Wendl. ex Sarg. -- accepted -- Florida cherry palm, Palma kuká
  Pseudotsuga flahaultii Flous -- not accepted -- Hayarín guayamé
  Psilochilus macrophyllus (Lindl.) Ames -- accepted -- Psilochilus de hoja grande, raggedlip orchid
  Rhipsalis baccifera (Sol. ex J.M. Mill.) Stearn -- accepted -- Nopalillo-mal ojo, mistletoe cactus
  Roystonea regia auct. non (Kunth) O.F. Cook -- not accepted -- Cuban royal palm, Florida royal palm, Palma real cubana
  Roystonea regia (Kunth) O.F. Cook -- accepted -- Cuban royal palm, Palma real cubana, Florida royal palm, palmier royal
  Sabal mexicana Mart. -- accepted -- Rio Grande palmetto, Palma apachite, palmetto
  Sclerocactus erectocentrus (J.M. Coult.) N.P. Taylor -- accepted -- redspine fishhook cactus, Biznaga-bola de centrales erectas
  Sclerocactus intertextus (Engelm.) N.P. Taylor -- accepted -- white fishhook cactus, white fish-hook cactus, Biznaga-bola entretejida
  Sclerocactus mariposensis (Hester) N.P. Taylor -- accepted -- Lloyd's fishhook cactus, Biznaga-bola de Mariposa, Lloyd's Mariposa cactus, golfball cactus, silver column cactus
  Sclerocactus papyracanthus (Engelm.) N.P. Taylor -- accepted -- paperspine fishhook cactus, Biznaga-bola de espinas de papel
  Sclerocactus scheeri (Salm-Dyck) N.P. Taylor -- accepted -- Scheer's fishhook cactus, Biznaga-bola ganchuda, Tobusch fishhook cactus
  Sclerocactus uncinatus (Galeotti ex Pfeiff.) N.P. Taylor -- accepted -- Chihuahuan fishhook cactus, Biznaga-bola uncinada
  Sclerocactus warnockii (L.D. Benson) N.P. Taylor -- accepted -- Warnock's fishhook cactus, Biznaga-bola amarilla
  Selenicereus coniflorus (Weing.) Britton & Rose -- not accepted -- coneflower moonlight cactus, Pitayita-noctirna de culebra
  Selenicereus grandiflorus (L.) Britton & Rose -- accepted -- queen of the night, Pitayita-nocturna reina de la noche
  Selenicereus pteranthus (Link ex A. Dietr.) Britton & Rose -- accepted -- princess of the night, Pitayita-nocturna flor de la noche
  Selenicereus spinulosus (DC.) Britton & Rose -- accepted -- vinelike moonlight cactus, Pitayita-nocturna espinosa, nightblooming cereus
  Spiranthes graminea Lindl. -- accepted -- Spiranthes graminea, Canelo ladies'-tresses, Canelo lady's tresses
  Spiranthes torta (Thunb.) Garay & H.R. Sweet -- accepted -- southern lady's tresses, Spiranthes torcida, southern ladies'-tresses
  Stenocereus thurberi (Engelm.) Buxb. -- accepted -- organpipe cactus, Pitayo dulce
  Stenorrhynchos lanceolatum (Aubl.) Rich. -- not accepted -- Cutzis de espolón, leafless beaked ladies'-tresses, leafless beaked lady orchid
  Taxodium mucronatum Ten. -- accepted -- Montezuma bald cypress, ahuehuetes, Mexican cypress, Montezuma baldcypress, sabino
  Thelocactus bicolor (Galeotti ex Pfeiff.) Britton & Rose -- accepted -- glory of Texas, Biznaga-pezón bicolor
  Thelocactus setispinus (Engelm.) E.F. Anderson -- accepted -- miniature barrel cactus, Biznaga-pezón setosa, fishhook cactus
  Thrinax radiata Lodd. ex Schult. & Schult. f. -- accepted -- Florida thatch palm, Florida thatchpalm, Palma chit
  Tillandsia baileyi Rose ex Small -- accepted -- Tillandsia de Bailey, reflexed airplant
  Tillandsia balbisiana Schult. f. -- accepted -- Tillandsia de Balbis, northern needleleaf
  Tillandsia bartramii Elliot -- accepted -- Tillandsia de Bartram, Bartram's airplant
  Tillandsia bulbosa Hook. -- accepted -- Tillandsia base bulbosa, bulbous airplant
  Tillandsia fasciculata Sw. -- accepted -- Tillandsia espigas erectas, giant airplant
  Tillandsia festucoides Brongn. ex Mez -- accepted -- Tillandsia como pasto, fescue airplant
  Tillandsia juncea auct. non (Ruiz & Pav.) Poir. -- not accepted -- Tillandsia tipo zacate
  Tillandsia paucifolia Baker -- accepted -- potbelly airplant, Tillandsia pocas hojas
  Tillandsia polystachya auct. non (L.) L. -- not accepted -- Tillandsia muchas espigas
  Tillandsia pruinosa Sw. -- accepted -- Tillandsia peluda, fuzzywuzzy airplant
  Tillandsia recurvata (L.) L. -- accepted -- Tillandsia recta o heno pequeño, ballmoss, small ballmoss
  Tillandsia setacea Sw. -- accepted -- Tillandsia amacollada, southern needleleaf
  Tillandsia usneoides (L.) L. -- accepted -- Heno, Spanish moss
  Tillandsia utriculata L. -- accepted -- Tillandsia base inflada, spreading airplant
  Tillandsia valenzuelana A. Rich. -- not accepted -- Tillandsia de Valenzuela
  Tillandsia variabilis Schltdl. -- accepted -- leatherleaf airplant, Tillandsia cambiante
  Tropidia polystachya (Sw.) Ames -- accepted -- young palm orchid, Tropidia ramosa
  Turbinicarpus gautii (L.D. Benson) A.D. Zimmerman -- not accepted -- top cactus, Biznaga-cono invertido plateada
  Vanilla mexicana Mill. -- accepted -- Vainilla mexicana, Mexican vanilla
  Vanilla planifolia Jacks. ex Andrews -- accepted -- vanilla, Vainilla tlilxóchil
  Vanilla pompona Schiede -- accepted -- West Indian vanilla, Vainilla grande
  Washingtonia filifera (Linden ex André) H. Wendl. -- not accepted -- California fan palm, Washingtonia de Castilla
  Washingtonia filifera (Linden ex André) H. Wendl. ex de Bary -- accepted -- palmier évantail de Californie, Washingtonia de Castilla, California fan palm
  Washingtonia robusta H. Wendl. -- accepted -- palmier évantail du Mexique, Washington fan palm, Mexican fan palm, Washingtonia colorada
  Wullschlaegelia aphylla (Sw.) Rchb. f. -- accepted -- Orquídea áfila, leafless orchid
  Yucca aloifolia L. -- accepted -- aloe yucca, Izote Kukil
  Yucca arizonica McKelvey -- not accepted -- Izote de Arizona
  Yucca baccata Torr. -- accepted -- Izote de dátil, datil yucca, banana yucca
  Yucca brevifolia Engelm. -- accepted -- Izote de desierto, Joshua tree
  Yucca carnerosana auct. non (Trel.) McKelvey -- not accepted -- Izote samandoca
  Yucca elata Engelm. -- accepted -- Izote forrajero, soaptree yucca
  Yucca elephantipes Regel -- not accepted -- Izote de ciudad
  Yucca rostrata Engelm. ex Trel. -- accepted -- Izote Kikapú, beaked yucca
  Yucca schidigera Roezl ex Ortgies -- accepted -- Mojave yucca, Izote de Ensenada, Spanish dagger
  Yucca schottii Engelm. -- not accepted -- Izote de Schott, Schott's yucca
  Yucca thompsoniana Trel. -- accepted -- Izote cenizo, beaked yucca, Thompson's yucca
  Yucca torreyi Shafer -- not accepted -- Izote criollo, torrey yucca, Torrey's yucca
  Yucca treculeana Carrière -- accepted -- Izote de Chocha, trecul yucca, Don Quixote's lace
  Yucca whipplei Torr. -- not accepted -- Izote de hoz, chaparral yucca
   

A gray bar