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

ITIS records citing this source
 
 Kingdom Animalia
  Abeillia abeillei (Lesson & Delattre, 1839) -- valid -- Colibrí pico corto, Emerald-chinned Hummingbird
  Abronia bogerti Tihen, 1954 -- valid -- Lagarto-alicante de Bogert
  Abronia chiszari Smith and Smith, 1981 -- valid -- Lagarto-alicante de Chiszar
  Abronia fuscolabialis (Tihen, 1944) -- valid -- Lagarto-alicante de Zempoaltepec
  Abronia graminea (Cope, 1864) -- valid -- Lagarto-alicante terrestre
  Abronia kalaina Good and Schwenk, 1985 -- valid -- Lagarto-alicante de Sierra de Juárez
  Abronia lythrochila Smith and Alvarez del Toro, 1963 -- valid -- Lagarto-alicante labios rojos
  Abronia matudai (Hartweg and Tihen, 1946) -- valid -- Lagarto-alicante rayado
  Abronia mitchelli Campbell, 1982 -- valid -- Lagarto-alicante de Mitchell
  Abronia mixteca Bogert and Porter, 1967 -- valid -- Lagarto-alicante mixteco
  Abronia oaxacae (Günther, 1885) -- valid -- Lagarto-alicante oaxaqueño
  Abronia ochoterenai (Martín del Campo, 1939) -- valid -- Lagarto-alicante verde
  Abronia ornelasi Campbell, 1984 -- valid -- Lagarto-alicante de Cerro Baúl
  Abronia reidi Werler and Shannon, 1961 -- valid -- Lagarto-alicante de Reid
  Abronia taeniata (Wiegmann, 1828) -- valid -- Lagarto-alicante de bromelia
  Accipiter bicolor (Vieillot, 1817) -- valid -- Bicolored Hawk, Épervier bicolore, Gavilán bicolor
  Accipiter chionogaster (Kaup, 1852) -- valid -- Gavilán pecho blanco, White-breasted Hawk
  Accipiter cooperii (Bonaparte, 1828) -- valid -- Cooper's Hawk, epervier de Cooper, Épervier de Cooper, Gavilán de Cooper
  Accipiter gentilis (Linnaeus, 1758) -- valid -- Autour des palombes, Gavilán azor, Northern Goshawk
  Accipiter striatus Vieillot, 1808 -- valid -- epervier brun, Épervier brun, Gavilán pecho rufo, Sharp-shinned Hawk
  Acris crepitans Baird, 1854 -- valid -- Northern Cricket Frog, Rana-grillo norteño
  Actitis macularia (Linnaeus, 1766) -- invalid -- chevalier grivelé, Playero alzacolita, Spotted Sandpiper
  Adelophis copei Dugès, 1879 -- valid -- Culebra-de vega de Cope
  Adelophis foxi Rossman and Blaney, 1968 -- valid -- Culebra-de vega de Fox
  Adelphicos latifasciatus Lynch and Smith, 1966 -- valid -- Culebra-cavadora oaxaqueña
  Adelphicos nigrilatus Smith, 1942 -- valid -- Culebra-cavadora ocotera
  Adelphicos quadrivirgatus Jan, 1862 -- valid -- 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 (Gmelin, 1788) -- valid -- Northern Saw-whet Owl, petite nyctale, Tecolote afilador
  Aeronautes saxatalis (Woodhouse, 1853) -- valid -- Vencejo pecho blanco, White-throated Swift
  Aethia cristatella (Pallas, 1769) -- valid -- Alcuela crestada, Crested Auklet, Starique cristatelle
  Agalychnis callidryas (Cope, 1862) -- valid -- Rana-de árbol ojos rojos, Red-eyed Treefrog
  Agamia agami (Gmelin, 1789) -- valid -- Agami Heron, Garza agami, Héron agami
  Agelaius phoeniceus (Linnaeus, 1766) -- valid -- carouge à épaulettes, Red-winged Blackbird, Tordo sargento
  Agelaius tricolor (Audubon, 1837) -- valid -- Tordo tricolor, Tricolored Blackbird
  Agkistrodon contortrix (Linnaeus, 1766) -- valid -- Cantil cobrizo, 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 -- Black-chested Sparrow, Zacatonero pecho negro
  Aimophila mystacalis (Hartlaub, 1852) -- invalid -- Bridled Sparrow, Zacatonero embridado
  Aimophila notosticta (P. L. Sclater & Salvin, 1868) -- valid -- Oaxaca Sparrow, Zacatonero oaxaqueño
  Aimophila rufescens (Swainson, 1827) -- valid -- Rusty Sparrow, Zacatonero rojizo
  Aimophila ruficauda (Bonaparte, 1853) -- invalid -- Stripe-headed Sparrow, Zacatonero corona rayada
  Aimophila ruficeps (Cassin, 1852) -- valid -- Rufous-crowned Sparrow, Zacatonero corona rufa
  Aimophila sumichrasti Lawrence, 1871 -- invalid -- Cinnamon-tailed Sparrow, Zacatonero istmeño
  Aix sponsa (Linnaeus, 1758) -- valid -- canard branchu, Pato arcoiris, Wood Duck
  Ajaia ajaja (Linnaeus, 1758) -- invalid -- Espátula rosada, Roseate Spoonbill
  Alectoris chukar (J. E. Gray, 1830) -- valid -- Chukar, Chukar Partridge, Perdiz chukar
  Alligator mississippiensis (Daudin, 1802) -- valid -- Aligator americano, alligator, American Alligator, Florida alligator, gator, Louisiana alligator, Mississippi alligator
  Alouatta palliata (Gray, 1849) -- valid -- Mantled Howler, mantled howler monkey, Saraguato de manto
  Alouatta pigra Lawrence, 1933 -- valid -- Central American Black Howler, Guatemalan Black Howler, Mexican black howler monkey, Saraguato yucateco
  Amastridium veliferum Cope, 1861 -- valid -- Culebra cabeza cobriza
  Amaurolimnas concolor (Gosse, 1847) -- valid -- Rascón café, Uniform Crake
  Amazilia beryllina (Deppe, 1830) -- valid -- Berylline Hummingbird, Colibrí berilo
  Amazilia candida (Bourcier & Mulsant, 1846) -- valid -- Colibrí cándido, White-bellied Emerald
  Amazilia cyanocephala (Lesson, 1829) -- valid -- Azure-crowned Hummingbird, Colibrí corona azul
  Amazilia cyanura Gould, 1859 -- valid -- Blue-tailed Hummingbird, Colibrí cola azul
  Amazilia rutila (Delattre, 1843) -- valid -- Cinnamon Hummingbird, Colibrí canela
  Amazilia tzacatl (De la Llave, 1833) -- valid -- Colibrí cola rojiza, Rufous-tailed Hummingbird
  Amazilia violiceps (Gould, 1859) -- valid -- Colibrí corona violeta, Violet-crowned Hummingbird
  Amazilia viridifrons (Elliot, 1871) -- valid -- Colibrí frente verde, Green-fronted Hummingbird
  Amazilia yucatanensis (Cabot, 1845) -- valid -- Buff-bellied Hummingbird, Colibrí yucateco
  Amazona albifrons (Sparrman, 1788) -- valid -- Loro frente blanca, White-fronted Amazon, White-fronted Parrot
  Amazona auropalliata (Lesson, 1842) -- valid -- Loro nuca amarilla, Yellow-naped Amazon, Yellow-naped Parrot
  Amazona autumnalis (Linnaeus, 1758) -- valid -- Loro cachete amarillo, Red-lored Amazon, Red-lored Parrot
  Amazona farinosa (Boddaert, 1783) -- valid -- Loro corona azul, Mealy Amazon, Mealy Parrot
  Amazona finschi (P. L. Sclater, 1864) -- valid -- Lilac-crowned Amazon, Lilac-crowned Parrot, Loro corona lila
  Amazona oratrix Ridgway, 1887 -- valid -- Loro cabeza amarilla, Yellow-headed Amazon, Yellow-headed Parrot
  Amazona viridigenalis (Cassin, 1853) -- valid -- Loro tamaulipeco, Red-crowned Amazon, Red-crowned Parrot
  Amazona xantholora (G. R. Gray, 1859) -- valid -- Loro yucateco, Yellow-lored Parrot, Yucatan Amazon
  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 -- Eastern Tiger Salamander, Salamandra tigre, Tiger Salamander
  Ambystoma velasci (Dugès, 1888) -- valid -- Salamandra tigre de meseta
  Ameiva chaitzami Stuart, 1942 -- valid -- Ameiva de Chaitzam
  Ameiva festiva (Lichtenstein and Von Martens, 1856) -- valid -- Ameiva centroamericana
  Ameiva undulata (Wiegmann, 1834) -- valid -- Ameiva metálica o arcoiris
  Ammodramus bairdii (Audubon, 1844) -- valid -- Baird's Sparrow, Gorrión de Baird
  Ammodramus caudacutus (J. F. Gmelin, 1788) -- valid -- Gorrión cola aguda, Saltmarsh Sharp-tailed Sparrow, Saltmarsh Sparrow
  Ammodramus leconteii (Audubon, 1844) -- valid -- bruant de le Conte, Gorrión de Le Conte, Le Conte's Sparrow
  Ammodramus maritimus (A. Wilson, 1811) -- valid -- Gorrión costero, Seaside Sparrow
  Ammodramus savannarum (J. F. Gmelin, 1789) -- valid -- bruant sauterelle, Gorrión chapulín, Grasshopper Sparrow
  Ammospermophilus harrisii (Audubon and Bachman, 1854) -- valid -- Ardilla-antilope de Sonora, Harris' antelope squirrel, 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 -- Black-throated Sparrow, Zacatonero garganta negra
  Amphispiza quinquestriata (P. L. Sclater & Salvin, 1868) -- valid -- Five-striped Sparrow, Zacatonero cinco rayas
  Anabacerthia variegaticeps (P. L. Sclater, 1857) -- valid -- Breñero cejudo, Scaly-throated Foliage-gleaner
  Anas acuta Linnaeus, 1758 -- valid -- canard pilet, Northern Pintail, Pato golondrino
  Anas americana Gmelin, 1789 -- valid -- American Wigeon, canard d'Amérique, Pato chalcuán
  Anas clypeata Linnaeus, 1758 -- valid -- canard souchet, Northern Shoveler, Pato cucharón-norteño
  Anas crecca Linnaeus, 1758 -- valid -- Cerceta ala verde, Eurasian Teal, Green-winged Teal, sarcelle d'hiver
  Anas cyanoptera Vieillot, 1816 -- valid -- Cerceta canela, Cinnamon Teal, sarcelle cannelle
  Anas diazi Ridgway, 1886 -- invalid -- Mexican Duck, Pato mexicano
  Anas discors Linnaeus, 1766 -- valid -- Blue-winged Teal, Cerceta ala azul, sarcelle à ailes bleues
  Anas fulvigula Ridgway, 1874 -- valid -- Mottled Duck, Pato tejano
  Anas penelope Linnaeus, 1758 -- valid -- canard siffleur, Eurasian Wigeon, Pato silbón
  Anas platyrhynchos Linnaeus, 1758 -- valid -- canard colvert, Mallard, Pato de collar
  Anas querquedula Linnaeus, 1758 -- valid -- Cerceta ceja blanca, Garganey, sarcelle d'été
  Anas strepera Linnaeus, 1758 -- valid -- canard chipeau, Gadwall, Pato friso
  Aneides lugubris (Hallowell, 1849) -- valid -- Arboreal Salamander, Salamandra arbórea
  Anelytropsis papillosus Cope, 1885 -- valid -- 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
  Anniella pulchra Gray, 1852 -- valid -- California Legless Lizard, Lagartija-sin patas californiana, Silvery 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 -- anole vert, Anolis verde, Green Anole
  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, Gray Anole, Oaxacan Oak Anole
  Anolis rodriguezi Bocourt, 1873 -- invalid -- Anolis liso
  Anolis sagrei Cocteau in A. M. C. Duméril and Bibron, 1837 -- valid -- Anolis café, Brown Anole, 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) -- valid -- Rana-de árbol coronada
  Anous minutus F. Boie, 1844 -- valid -- Black Noddy, Charrán-bobo negro, Noddi noir
  Anous stolidus (Linnaeus, 1758) -- valid -- Brown Noddy, Charrán-bobo café, Noddi brun
  Anser albifrons (Scopoli, 1769) -- valid -- Ganso careto-mayor, Greater White-fronted Goose, oie rieuse
  Anthracothorax prevostii (Lesson, 1832) -- valid -- Colibrí garganta negra, Green-breasted Mango
  Anthus cervinus (Pallas, 1811) -- valid -- Bisbita garganta roja, Red-throated Pipit
  Anthus rubescens (Tunstall, 1771) -- valid -- American Pipit, Bisbita de agua, Buff-bellied Pipit, pipit d'Amérique
  Anthus spragueii (Audubon, 1844) -- valid -- Bisbita llanera, Sprague's Pipit
  Antilocapra americana (Ord, 1815) -- valid -- Berrendo, Pronghorn, pronghorn
  Antrozous pallidus (LeConte, 1856) -- valid -- Murciélago-desértico norteño, Pallid Bat, 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, Spiny Softshell Turtle, tortue-molle à épines, Tortuga-casco suave espinosa
  Aphelocoma coerulescens (Bosc, 1795) -- valid -- Chara pecho rayado, Florida Scrub Jay, Florida Scrub-Jay, Scrub Jay
  Aphelocoma ultramarina (Bonaparte, 1825) -- valid -- Chara pecho gris, Gray-breasted Jay, Mexican Jay
  Aphelocoma unicolor (Du Bus de Gisignies, 1847) -- valid -- Chara unicolor, Unicolored Jay
  Aphriza virgata (Gmelin, 1789) -- valid -- Bécasseau du ressac, Playero roquero, Surfbird
  Aquila chrysaetos (Linnaeus, 1758) -- valid -- Águila real, Aigle royal, Golden Eagle
  Ara macao (Linnaeus, 1758) -- valid -- Guacamaya roja, Scarlet Macaw
  Ara militaris (Linnaeus, 1766) -- valid -- Guacamaya verde, Military Macaw
  Aramides axillaris Lawrence, 1863 -- valid -- Rascón cuello rufo, Rufous-necked Wood Rail, Rufous-necked Wood-Rail
  Aramides cajanea (Statius Muller, 1776) -- valid -- Gray-necked Wood-Rail, Grey-necked Wood Rail, Rascón cuello gris
  Aramus guarauna (Linnaeus, 1766) -- valid -- Carao, Limpkin
  Aratinga canicularis (Linnaeus, 1758) -- valid -- Orange-fronted Parakeet, Perico frente naranja
  Aratinga holochlora (P. L. Sclater, 1859) -- valid -- Green Parakeet, Perico mexicano
  Aratinga nana (Vigors, 1830) -- valid -- Jamaican Parakeet, Olive-throated Parakeet, Perico pecho sucio
  Aratinga strenua (Ridgway, 1915) -- valid -- Pacific Parakeet, Perico centroamericano
  Archilochus alexandri (Bourcier & Mulsant, 1846) -- valid -- Black-chinned Hummingbird, Colibrí barba negra
  Archilochus colubris (Linnaeus, 1758) -- valid -- colibri à gorge rubis, Colibrí garganta rubí, Ruby-throated Hummingbird
  Arctocephalus townsendi Merriam, 1897 -- valid -- Guadalupe Fur Seal, Lobo-fino de Guadalupe
  Ardea herodias Linnaeus, 1758 -- valid -- Garza morena, Grand Héron, Great Blue Heron
  Arenaria interpres (Linnaeus, 1758) -- valid -- Ruddy Turnstone, Tournepierre à collier, Vuelvepiedras rojizo
  Arenaria melanocephala (Vigors, 1829) -- valid -- Black Turnstone, Tournepierre noir, Vuelvepiedras negro
  Aristelliger georgeensis (Bocourt, 1873) -- valid -- Geco pestañudo
  Arizona elegans Kennicott in Baird, 1859 -- valid -- Culebra brillante, Glossy Snake
  Arremon aurantiirostris Lafresnaye, 1847 -- valid -- Orange-billed Sparrow, Rascador pico naranja
  Arremonops chloronotus (Salvin, 1861) -- valid -- Green-backed Sparrow, Rascador dorso verde
  Arremonops rufivirgatus (Lawrence, 1851) -- valid -- Olive Sparrow, Rascador oliváceo
  Artibeus jamaicensis Leach, 1821 -- valid -- Jamaican fruit-eating bat, Jamaican Fruit-eating Bat, Murciélago-frutero de Jamaica
  Asio flammeus (Pontoppidan, 1763) -- valid -- Búho cuerno corto, hibou des marais, Short-eared Owl
  Asio otus (Linnaeus, 1758) -- valid -- Búho cara café, hibou moyen-duc, Long-eared Owl
  Asio stygius (Wagler, 1832) -- valid -- Búho cara oscura, Stygian Owl
  Aspatha gularis (Lafresnaye, 1840) -- valid -- Blue-throated Motmot, Momoto garganta azul
  Ateles geoffroyi Kuhl, 1820 -- valid -- Central American Spider Monkey, Mono-araña centroamericano
  Athene cunicularia (Molina, 1782) -- valid -- Burrowing Owl, chevêche des terriers, Tecolote llanero
  Atlapetes albinucha (Lafresnaye & d'Orbigny, 1838) -- valid -- Atlapetes nuca blanca, White-naped Brush Finch, White-naped Brush-Finch
  Atlapetes pileatus Wagler, 1831 -- valid -- Atlapetes gorra rufa, Rufous-capped Brush Finch, Rufous-capped Brush-Finch
  Atropoides nummifer (Rüppell, 1845) -- valid -- Jumping Pit Viper, Nauyaca o nayaraca saltadora
  Atropoides olmec (Perez-Higareda, H. M. Smith and Julia-Zertuche, 1985) -- valid -- Nauyaca de Los Tuxtlas, Olmecan Pit Viper
  Atthis ellioti Ridgway, 1878 -- valid -- Wine-throated Hummingbird, Zumbador magenta
  Atthis heloisa (Lesson & Delattre, 1839) -- valid -- Bumblebee Hummingbird, Zumbador mexicano
  Attila spadiceus (Gmelin, 1789) -- valid -- Atila, Bright-rumped Attila
  Aulacorhynchus prasinus (Gould, 1833) -- valid -- Emerald Toucanet, Tucaneta verde
  Auriparus flaviceps (Sundevall, 1850) -- valid -- Baloncillo, Verdin
  Automolus ochrolaemus (Tschudi, 1844) -- valid -- Breñero garganta pálida, Buff-throated Foliage-gleaner
  Automolus rubiginosus (P. L. Sclater, 1857) -- valid -- Breñero rojizo, Ruddy Foliage-gleaner
  Aythya affinis (Eyton, 1838) -- valid -- Lesser Scaup, Pato boludo-menor, petit fuligule
  Aythya americana (Eyton, 1838) -- valid -- fuligule à tête rouge, Pato cabeza roja, Redhead
  Aythya collaris (Donovan, 1809) -- valid -- fuligule à collier, Pato pico anillado, Ring-necked Duck
  Aythya marila (Linnaeus, 1761) -- valid -- fuligule milouinan, Greater Scaup, Pato boludo-mayor
  Aythya valisineria (A. Wilson, 1814) -- valid -- Canvasback, fuligule à dos blanc, Pato coacoxtle
  Baeolophus bicolor (Linnaeus, 1766) -- valid -- Carbonero cresta negra, Tufted Titmouse
  Baeolophus inornatus (Gambel, 1845) -- valid -- Carbonero sencillo, Oak Titmouse, Plain Titmouse
  Baeolophus wollweberi (Bonaparte, 1850) -- valid -- Bridled Titmouse, Carbonero embridado
  Baiomys taylori (Thomas, 1887) -- valid -- Northern Pygmy Mouse, Ratón-pigmeo norteño
  Balaenoptera acutorostrata Lacépède, 1804 -- valid -- Ballena menor, Common Minke Whale, Minke Whale, northern minke whale, petit rorqual
  Balaenoptera borealis Lesson, 1828 -- valid -- Ballena de Sei, rorqual boréal, Sei Whale
  Balaenoptera edeni Anderson, 1879 -- valid -- Ballena tropical, Eden's whale
  Balaenoptera musculus (Linnaeus, 1758) -- valid -- Ballena azul, Blue Whale, rorqual bleu
  Balaenoptera physalus (Linnaeus, 1758) -- valid -- Ballena de aleta, Fin Whale, finback whale, rorqual commun
  Barisia imbricata (Wiegmann, 1828) -- valid -- Lagarto-alicante del Popocatépetl
  Barisia levicollis Stejneger, 1890 -- valid -- Lagarto-alicante de Chihuahua
  Barisia rudicollis (Wiegmann, 1828) -- valid -- Lagarto-alicante cuello rugoso
  Bartramia longicauda (Bechstein, 1812) -- valid -- Maubèche des champs, Upland Sandpiper, Zarapito ganga
  Basileuterus belli (Giraud Jr, 1841) -- valid -- Chipe ceja dorada, Golden-browed Warbler, Paruline à sourcils dorés
  Basileuterus culicivorus (Deppe, 1830) -- valid -- Chipe corona dorada, Golden-crowned Warbler, Paruline à couronne dorée, Stripe-crowned Warbler
  Basileuterus rufifrons (Swainson, 1838) -- valid -- Chipe gorra rufa, Paruline à calotte rousse, Rufous-capped Warbler
  Basiliscus vittatus Wiegmann, 1828 -- valid -- Basilisco rayado, Brown Basilisk
  Bassariscus astutus (Lichtenstein, 1830) -- valid -- Cacomixtle norteño, Ringtail
  Batrachoseps pacificus (Cope, 1865) -- valid -- Channel Islands Slender Salamander, Pacific Slender Salamander, Salamandra-delgada del Pacífico
  Bipes biporus (Cope, 1894) -- valid -- Lagartija-topo cinco dedos
  Bipes canaliculatus Latreille in Sonnini and Latreille, 1801 -- valid -- Lagartija-topo cuatro dedos
  Bipes tridactylus (Dugès, 1894) -- valid -- Lagartija-topo tres dedos
  Bison bison (Linnaeus, 1758) -- valid -- American bison, American Bison, bison, Bisonte americano
  Bogertophis rosaliae (Mocquard, 1899) -- valid -- Baja California Rat Snake, Baja California Ratsnake, Culebra-ratonera de Baja California
  Bogertophis subocularis (Brown, 1901) -- valid -- Culebra-ratonera de Transpecos, Trans-pecos Rat Snake, Trans-Pecos Ratsnake
  Bolborhynchus lineola (Cassin, 1853) -- valid -- Barred Parakeet, Perico barrado
  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 in Cuvier, 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 -- American Bittern, Avetoro norteño, Butor d'Amérique
  Botaurus pinnatus (Wagler, 1829) -- valid -- Avetoro neotropical, Butor mirasol, Pinnated Bittern
  Bothriechis aurifer (Salvin, 1860) -- valid -- Nauyaca-de árbol manchas amarillas, Yellow-blotched Palm Pit Viper
  Bothriechis bicolor (Bocourt, 1868) -- valid -- Guatemala Palm Pit Viper, Nauyaca-de árbol bicolor
  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 (Gmelin, 1789) -- valid -- Guillemot marbré, Marbled Murrelet, Marbled Murrelet
  Branta bernicla (Linnaeus, 1758) -- valid -- bernache cravant, Brant, Brant Goose, Brent Goose, Ganso de collar
  Branta canadensis (Linnaeus, 1758) -- valid -- bernache du Canada, Canada Goose, Ganso canadiense
  Brotogeris jugularis (Statius Muller, 1776) -- valid -- Orange-chinned Parakeet, Perico ala amarilla
  Bubo virginianus (Gmelin, 1788) -- valid -- Búho cornudo, grand-duc d'Amérique, Great Horned Owl
  Bubulcus ibis (Linnaeus, 1758) -- valid -- Cattle Egret, Garza ganadera, Héron garde-boeufs, Western Cattle Egret
  Bucephala albeola (Linnaeus, 1758) -- valid -- Bufflehead, Pato monja, petit garrot
  Bucephala clangula (Linnaeus, 1758) -- valid -- Common Goldeneye, garrot à oeil d'or, Pato chillón
  Bufo alvarius Girard in Baird, 1859 -- invalid -- Colorado River Toad, Sapo del desierto-sonorense, Sonoran Desert Toad
  Bufo bocourti Brocchi, 1877 -- invalid -- Sapo de Bocourt
  Bufo boreas Baird and Girard, 1852 -- invalid -- Sapo del Oeste, Western Toad
  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, 1823 -- 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 -- Cane Toad, Giant Toad, Marine Toad, Sapo gigante
  Bufo marmoreus Wiegmann, 1833 -- invalid -- Sapo marmoleado
  Bufo mazatlanensis Taylor, 1940 -- invalid -- Sapo sinaloense
  Bufo microscaphus Cope, 1867 -- invalid -- Arizona Toad, Sapo del suroeste, 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 -- Sapo verde-sonorense, Sonoran Green Toad
  Bufo speciosus Girard, 1854 -- invalid -- Sapo texano, Texas Toad
  Bufo tacanensis Smith, 1952 -- invalid -- Sapo del Tacaná
  Bufo valliceps Wiegmann, 1833 -- invalid -- Gulf Coast Toad, Sapo del golfo
  Burhinus bistriatus (Wagler, 1829) -- valid -- Alcaraván americano, Double-striped Thick-knee, Oedicnème bistrié
  Busarellus nigricollis (Latham, 1790) -- valid -- Aguililla canela, Black-collared Hawk, Busarelle à tête blanche
  Buteo albicaudatus Vieillot, 1816 -- valid -- Aguililla cola blanca, Buse à queue blanche, White-tailed Hawk
  Buteo albonotatus Kaup, 1847 -- valid -- Aguililla aura, Buse à queue barrée, Zone-tailed Hawk
  Buteo brachyurus Vieillot, 1816 -- valid -- Aguililla cola corta, Buse à queue courte, Short-tailed Hawk
  Buteo jamaicensis (Gmelin, 1788) -- valid -- Aguililla cola roja, Buse à queue rousse, Red-tailed Hawk
  Buteo lagopus (Pontoppidan, 1763) -- valid -- Aguililla ártica, Buse pattue, Rough-legged Buzzard, Rough-legged Hawk, Roughleg
  Buteo lineatus (Gmelin, 1788) -- valid -- Aguililla pecho rojo, Buse à épaulettes, Red-shouldered Hawk
  Buteo nitidus (Latham, 1790) -- valid -- Aguililla gris, Buse cendrée, Gray Hawk, Grey Hawk
  Buteo platypterus (Vieillot, 1823) -- valid -- Aguililla ala ancha, Broad-winged Hawk, Petite Buse
  Buteo regalis (G. R. Gray, 1844) -- valid -- Aguililla real, Buse rouilleuse, Ferruginous Hawk
  Buteo swainsoni Bonaparte, 1838 -- valid -- Aguililla de Swainson, Buse de Swainson, Swainson's Hawk
  Buteogallus anthracinus (Deppe, 1830) -- valid -- Aguililla-negra menor, Buse noire, Common Black Hawk, Common Black-Hawk
  Buteogallus urubitinga (Gmelin, 1788) -- valid -- Aguililla-negra mayor, Buse urubu, Great Black Hawk, Great Black-Hawk
  Butorides virescens (Linnaeus, 1758) -- valid -- Garceta verde, Green Heron, Héron vert
  Cacicus melanicterus (Bonaparte, 1825) -- valid -- Cacique mexicano, Mexican Cacique, Yellow-winged Cacique
  Cairina moschata (Linnaeus, 1758) -- valid -- Muscovy Duck, Pato real
  Calamospiza melanocorys Stejneger, 1885 -- valid -- bruant noir et blanc, Gorrión ala blanca, Lark Bunting
  Calcarius lapponicus (Linnaeus, 1758) -- valid -- bruant lapon, Escribano ártico, Lapland Longspur
  Calcarius mccownii (Lawrence, 1851) -- invalid -- Escribano de McCown, McCown's Longspur
  Calcarius ornatus (J. K. Townsend, 1837) -- valid -- Chestnut-collared Longspur, Escribano collar castaño
  Calidris alba (Pallas, 1764) -- valid -- Bécasseau sanderling, Playero blanco, Sanderling
  Calidris alpina (Linnaeus, 1758) -- valid -- Bécasseau variable, Dunlin, Playero dorso rojo
  Calidris bairdii (Coues, 1861) -- valid -- Baird's Sandpiper, Bécasseau de Baird, Playero de Baird
  Calidris canutus (Linnaeus, 1758) -- valid -- Bécasseau maubèche, Playero canuto, Red Knot
  Calidris fuscicollis (Vieillot, 1819) -- valid -- Bécasseau à croupion blanc, Playero rabadilla blanca, White-rumped Sandpiper
  Calidris himantopus (Bonaparte, 1826) -- valid -- Bécasseau à échasses, Playero zancón, Stilt Sandpiper
  Calidris mauri (Cabanis, 1857) -- valid -- Bécasseau d'Alaska, Playero occidental, Western Sandpiper
  Calidris melanotos (Vieillot, 1819) -- valid -- Bécasseau à poitrine cendrée, Pectoral Sandpiper, Playero pectoral
  Calidris minutilla (Vieillot, 1819) -- valid -- Bécasseau minuscule, Least Sandpiper, Playero chichicuilote
  Calidris pusilla (Linnaeus, 1766) -- valid -- Bécasseau semipalmé, Playero semipalmeado, Semipalmated Sandpiper
  Callipepla californica (Shaw, 1798) -- valid -- California Quail, Californian Quail, Codorniz californiana
  Callipepla douglasii (Vigors, 1829) -- valid -- Codorniz cresta dorada, Elegant Quail
  Callipepla gambelii (Gambel, 1843) -- valid -- Codorniz chiquiri, Gambel's Quail
  Callipepla squamata (Vigors, 1830) -- valid -- Codorniz escamosa, Scaled Quail
  Callisaurus draconoides Blainville, 1835 -- valid -- Lagartija cachora, Zebra-tailed Lizard
  Calocitta colliei (Vigors, 1829) -- valid -- Black-throated Magpie-Jay, Urraca-hermosa cara negra
  Calocitta formosa (Swainson, 1827) -- valid -- Urraca-hermosa cara blanca, White-throated Magpie-Jay
  Calonectris diomedea (Scopoli, 1769) -- valid -- Cory's Shearwater, Pardela de Cory, Puffin cendré, puffin cendrée
  Calothorax lucifer (Swainson, 1827) -- valid -- Colibrí lucifer, Lucifer Hummingbird, Lucifer Sheartail
  Calothorax pulcher Gould, 1859 -- valid -- Beautiful Hummingbird, Beautiful Sheartail, Colibrí oaxaqueño
  Calypte anna (Lesson, 1829) -- valid -- Anna's Hummingbird, Colibrí cabeza roja
  Calypte costae (Bourcier, 1839) -- valid -- Colibrí cabeza violeta, Costa's Hummingbird
  Campephilus guatemalensis (Hartlaub, 1844) -- valid -- Carpintero pico plata, Pale-billed Woodpecker
  Campephilus imperialis (Gould, 1832) -- valid -- Carpintero imperial, Imperial Woodpecker
  Camptostoma imberbe P. L. Sclater, 1857 -- valid -- Mosquero lampiño, Northern Beardless Tyrannulet, Northern Beardless-Tyrannulet
  Campylopterus curvipennis (Deppe, 1830) -- valid -- Fandanguero cola cuña, Wedge-tailed Sabrewing
  Campylopterus excellens (Wetmore, 1941) -- valid -- Fandanguero cola larga
  Campylopterus hemileucurus (Deppe, 1830) -- valid -- Violet Sabrewing
  Campylopterus rufus Lesson, 1840 -- valid -- 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 -- Boucard's Wren, Matraca del Balsas
  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 -- Band-backed Wren, Matraca tropical
  Canis latrans Say, 1823 -- valid -- Coyote, coyote, Coyote
  Canis lupus Linnaeus, 1758 -- valid -- Gray Wolf, Lobo gris, loup, Wolf
  Cantorchilus modestus (Cabanis, 1861) -- valid -- Chivirín modesto, Plain Wren
  Caprimulgus badius (Bangs & Peck, 1908) -- valid -- Tapacamino huil, Yucatan Nightjar
  Caprimulgus carolinensis Gmelin, 1789 -- valid -- Chuck-will's-widow, engoulevent de Caroline, Tapacamino de Carolina
  Caprimulgus maculicaudus (Lawrence, 1862) -- valid -- Spot-tailed Nightjar, Tapacamino cola pinta
  Caprimulgus ridgwayi (Nelson, 1897) -- valid -- Buff-collared Nightjar, Tapacamino tu-cuchillo
  Caprimulgus salvini Hartert, 1892 -- valid -- Tapacamino ticuer, Tawny-collared Nightjar
  Caprimulgus vociferus A. Wilson, 1812 -- valid -- engoulevent bois-pourri, Tapacamino cuerporruín-norteño, Whip-poor-will
  Caracara plancus (J. F. Miller, 1777) -- valid -- Caracara quebrantahuesos, Crested Caracara, Southern Caracara, Southern Crested Caracara
  Cardellina rubrifrons (Giraud Jr, 1841) -- valid -- Chipe cara roja, Paruline à face rouge, Red-faced Warbler
  Cardinalis cardinalis (Linnaeus, 1758) -- valid -- Cardenal rojo, cardinal rouge, Northern Cardinal
  Cardinalis sinuatus Bonaparte, 1838 -- valid -- Cardenal pardo, Pyrrhuloxia
  Carduelis atriceps (Salvin, 1863) -- invalid -- Black-capped Siskin, Jilguero corona negra
  Carduelis lawrencei Cassin, 1850 -- invalid -- Jilguero gris, Lawrence's Goldfinch
  Carduelis notata Du Bus de Gisignies, 1847 -- invalid -- Black-headed Siskin, Jilguero encapuchado
  Carduelis pinus (A. Wilson, 1810) -- invalid -- Jilguero pinero, Pine Siskin, tarin des pins
  Carduelis psaltria (Say, 1822) -- invalid -- Jilguero dominico, Lesser Goldfinch
  Carduelis tristis (Linnaeus, 1758) -- invalid -- American Goldfinch, chardonneret jaune, Jilguero canario
  Caretta caretta (Linnaeus, 1758) -- valid -- Loggerhead, Loggerhead Sea Turtle, Tortuga-marina caguama
  Carpodacus cassinii S. F. Baird, 1854 -- invalid -- Cassin's Finch, Pinzón de Cassin
  Carpodacus mexicanus (P. L. Statius Müller, 1776) -- invalid -- House Finch, Pinzón mexicano, roselin familier
  Carpodacus purpureus (J. F. Gmelin, 1789) -- invalid -- Pinzón purpúreo, Purple Finch, roselin pourpré
  Caryothraustes poliogaster (Du Bus de Gisignies, 1847) -- valid -- Black-faced Grosbeak, Picogordo cara negra
  Casmerodius albus (Linnaeus, 1758) -- invalid -- Garza blanca, grande aigrette, Great Egret
  Catharacta maccormicki (H. Saunders, 1893) -- invalid -- labbe de Mccormick, Págalo sureño, South Polar Skua
  Cathartes aura (Linnaeus, 1758) -- valid -- Turkey Vulture, Urubu à tête rouge, Zopilote aura
  Cathartes burrovianus Cassin, 1845 -- valid -- Lesser Yellow-headed Vulture, Urubu à tête jaune, Zopilote sabanero
  Catharus aurantiirostris (Hartlaub, 1850) -- valid -- Orange-billed Nightingale-Thrush, Zorzal pico naranja
  Catharus dryas (Gould, 1855) -- valid -- Spotted Nightingale-Thrush, Zorzal pecho amarillo
  Catharus frantzii Cabanis, 1861 -- valid -- Ruddy-capped Nightingale-Thrush, Zorzal de Frantzius
  Catharus fuscescens (Stephens, 1817) -- valid -- grive fauve, Veery, Zorzal rojizo
  Catharus guttatus (Pallas, 1811) -- valid -- grive solitaire, Hermit Thrush, Zorzal cola rufa
  Catharus mexicanus (Bonaparte, 1856) -- valid -- Black-headed Nightingale-Thrush, Zorzal corona negra
  Catharus minimus (Lafresnaye, 1848) -- valid -- Gray-cheeked Thrush, Grey-cheeked Thrush, grive à joues grises, Zorzal cara gris
  Catharus occidentalis P. L. Sclater, 1859 -- valid -- Russet Nightingale-Thrush, Zorzal mexicano
  Catharus ustulatus (Nuttall, 1840) -- valid -- grive à dos olive, Swainson's Thrush, Zorzal de Swainson
  Catherpes mexicanus (Swainson, 1829) -- valid -- Canyon Wren, Chivirín barranqueño
  Catoptrophorus semipalmatus (Gmelin, 1789) -- invalid -- chevalier semipalmé, Willet, Willet
  Celestus enneagrammus (Cope, 1860) -- valid -- Celesto huasteco
  Celestus rozellae Smith, 1942 -- valid -- Celesto vientre verde
  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, Guillemot colombin, Pigeon Guillemot
  Cercomacra tyrannina (P. L. Sclater, 1855) -- valid -- Dusky Antbird, Hormiguero tirano
  Cerorhinca monocerata (Pallas, 1811) -- valid -- Alca rinoceronte, Macareux rhinocéros, Rhinoceros Auklet
  Cerrophidion barbouri (Dunn, 1919) -- invalid -- Nauyaca-de montaña guerrerense
  Cerrophidion godmani (Günther, 1863) -- valid -- Godman's Montane Pit Viper, Nauyaca-de montaña de Godman
  Cerrophidion tzotzilorum (Campbell, 1985) -- valid -- Nauyaca-de montaña tzotzil, Tzotzil Montane Pit Viper
  Certhia americana Bonaparte, 1838 -- valid -- Brown Creeper, grimpereau brun, Trepador americano
  Cervus elaphus Linnaeus, 1758 -- valid -- Ciervo común, elk, Red Deer (see comments), wapiti, wapiti, wapiti or elk
  Ceryle alcyon (Linnaeus, 1758) -- invalid -- Belted Kingfisher, martin-pêcheur d'Amérique, Martín-pescador norteño
  Ceryle torquata (Linnaeus, 1766) -- invalid -- Martín-pescador de collar, Ringed Kingfisher
  Chaetodipus baileyi (Merriam, 1894) -- valid -- Bailey's Pocket Mouse, Ratón-de abazones Sonorense
  Chaetodipus californicus (Merriam, 1889) -- valid -- California Pocket Mouse, Ratón-de abazones de California
  Chaetodipus fallax (Merriam, 1889) -- valid -- Ratón-de abazones de San Diego, San Diego Pocket Mouse
  Chaetodipus formosus (Merriam, 1889) -- valid -- Long-tailed Pocket Mouse, Ratón-de abazones cola larga
  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 -- Desert Pocket Mouse, Ratón-de abazones desértico
  Chaetodipus spinatus (Merriam, 1889) -- valid -- Ratón-de abazones de Baja California, Spiny Pocket Mouse
  Chaetura pelagica (Linnaeus, 1758) -- valid -- Chimney Swift, martinet ramoneur, Vencejo de chimenea
  Chaetura vauxi (J. K. Townsend, 1839) -- valid -- Vaux's Swift, Vencejo de Vaux
  Chamaea fasciata (Gambel, 1845) -- valid -- Camea, Wrentit
  Charadrius alexandrinus Linnaeus, 1758 -- valid -- Chorlo nevado, Kentish Plover, Snowy Plover
  Charadrius collaris Vieillot, 1818 -- valid -- Chorlo de collar, Collared Plover, Pluvier d'Azara
  Charadrius melodus Ord, 1824 -- valid -- Chorlo chiflador, Piping Plover, Pluvier siffleur
  Charadrius montanus J. K. Townsend, 1837 -- valid -- Chorlo llanero, Mountain Plover, Pluvier montagnard
  Charadrius semipalmatus Bonaparte, 1825 -- valid -- Chorlo semipalmeado, pluvier à semipalmé, Pluvier semipalmé, Semipalmated Plover
  Charadrius vociferus Linnaeus, 1758 -- valid -- Chorlo tildío, Killdeer, Pluvier kildir
  Charadrius wilsonia Ord, 1814 -- valid -- Chorlo pico grueso, Pluvier de Wilson, Wilson's Plover
  Chelonia mydas (Linnaeus, 1758) -- valid -- common green sea turtle, Green Sea Turtle, Tortuga-marina verde-del Atlántico
  Chelydra serpentina (Linnaeus, 1758) -- valid -- chélydre serpentine, Common Snapping Turtle, North American Snapping Turtle, Snapping Turtle, Tortuga-lagarto común
  Chen caerulescens (Linnaeus, 1758) -- valid -- Blue Goose, Ganso blanco, oie des neiges, Snow Goose
  Chen rossii (Cassin, 1861) -- valid -- Ganso de Ross, oie de Ross, Ross' Goose, Ross's Goose
  Chersodromus liebmanni Reinhardt, 1860 -- valid -- Culebra-corredora de Liebmann
  Chersodromus rubriventris (Taylor, 1949) -- valid -- Culebra-corredora vientre rojo
  Chilomeniscus cinctus Cope, 1861 -- invalid -- Banded Sand Snake, Culebra-arenera bandada
  Chilomeniscus punctatissimus Van Denburgh and Slevin, 1921 -- valid -- Culebra-arenera punteada
  Chilomeniscus savagei Cliff, 1954 -- valid -- Culebra-arenera de Cerralvo
  Chilomeniscus stramineus Cope, 1860 -- valid -- Culebra-arenera manchada, Variable Sandsnake
  Chionactis occipitalis (Hallowell, 1854) -- valid -- Culebra-nariz de pala del oeste, Western Shovel-nosed Snake
  Chionactis palarostris (Klauber, 1937) -- valid -- Culebra-nariz de pala sonorense, Sonoran Shovel-nosed Snake
  Chironectes minimus (Zimmermann, 1780) -- valid -- Tlacuache acuático, Water Opossum, yapok
  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 -- Black Tern, Charrán negro, Guifette noire
  Chloroceryle aenea (Pallas, 1764) -- valid -- American Pygmy Kingfisher, Martín-pescador enano
  Chloroceryle amazona (Latham, 1790) -- valid -- Amazon Kingfisher, Martín-pescador amazónico
  Chloroceryle americana (Gmelin, 1788) -- valid -- Green Kingfisher, Martín-pescador verde
  Chlorophanes spiza (Linnaeus, 1758) -- valid -- Green Honeycreeper, Mielero verde
  Chlorophonia occipitalis (Du Bus de Gisignies, 1847) -- valid -- Blue-crowned Chlorophonia, Clorofonia corona azul
  Chlorospingus ophthalmicus (Du Bus de Gisignies, 1847) -- invalid -- Chinchinero común, Common Bush Tanager, Common Bush-Tanager
  Chlorostilbon auriceps (Gould, 1852) -- valid -- Esmeralda mexicana, Golden-crowned Emerald
  Chlorostilbon canivetii (Lesson, 1832) -- valid -- Canivet's Emerald, Esmeralda tijereta
  Chlorostilbon forficatus Ridgway, 1885 -- valid -- Cozumel Emerald, Esmeralda de Cozumel
  Choeronycteris mexicana Tschudi, 1844 -- valid -- long-tongued bat, Mexican long-tongued bat, Mexican Long-tongued Bat, Murciélago trompudo
  Chondestes grammacus (Say, 1822) -- valid -- bruant à joues marron, Gorrión arlequín, Lark Sparrow
  Chondrohierax uncinatus (Temminck, 1822) -- valid -- Gavilán pico gancho, Hook-billed Kite, Milan bec-en-croc
  Chordeiles acutipennis (Hermann, 1783) -- valid -- Chotacabras menor, Lesser Nighthawk
  Chordeiles minor (J. R. Forster, 1771) -- valid -- Chotacabras zumbón, Common Nighthawk, engoulevent d'Amérique
  Chrysemys picta (Schneider, 1783) -- valid -- Eastern Painted Turtle, Painted Turtle, tortue peinte, Tortuga pintada
  Ciccaba nigrolineata P. L. Sclater, 1859 -- valid -- Black-and-white Owl, Búho blanquinegro
  Ciccaba virgata (Cassin, 1849) -- valid -- Búho café
  Cinclus mexicanus Swainson, 1827 -- valid -- American Dipper, Mirlo-acuático norteamericano
  Circus cyaneus (Linnaeus, 1766) -- valid -- Busard Saint-Martin, Gavilán rastrero, Northern Harrier
  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 -- harelde kakawi, Long-tailed Duck, Oldsquaw, Pato cola larga
  Claravis mondetoura (Bonaparte, 1856) -- valid -- Maroon-chested Ground Dove, Maroon-chested Ground-Dove, Tórtola pecho morado
  Claravis pretiosa (Ferrari-Perez, 1886) -- valid -- Blue Ground Dove, Blue Ground-Dove, Tórtola azul
  Claudius angustatus Cope, 1865 -- valid -- Narrow-bridged Musk Turtle, Tortuga-almizclera chopontil
  Clelia clelia (Daudin, 1803) -- valid -- Culebra-viborera común
  Clelia scytalina (Cope, 1867) -- valid -- Culebra-viborera mexicana
  Clemmys marmorata (Baird and Girard, 1852) -- invalid -- Pacific pond turtle, Tortuga marmoleada, western pond turtle
  Cnemidophorus alpinus Maslin and Walker, 1965 -- valid -- Huico alpino
  Cnemidophorus angusticeps Cope, 1878 -- valid -- Huico yucateco
  Cnemidophorus bacatus Van Denburgh and Slevin, 1921 -- valid -- Huico de Nolasco
  Cnemidophorus burti Taylor, 1938 -- valid -- Canyon Spotted Whiptail, Huico de cañón o punteado de cañón
  Cnemidophorus calidipes Duellman, 1955 -- valid -- Huico de Tepalcatepec
  Cnemidophorus canus Van Denburgh and Slevin, 1921 -- valid -- Huico de Salsipuedes
  Cnemidophorus catalinensis Van Denburgh and Slevin, 1921 -- valid -- Huico de Santa Catalina
  Cnemidophorus celeripes Dickerson, 1919 -- valid -- Huico de San José
  Cnemidophorus ceralbensis (Van Denburgh and Slevin, 1921) -- valid -- Huico de Cerralbo
  Cnemidophorus communis Cope, 1878 -- valid -- Huico moteado-gigante
  Cnemidophorus costatus Cope, 1878 -- valid -- Huico del oeste-mexicano
  Cnemidophorus cozumela Gadow, 1906 -- valid -- Huico de Cozumel
  Cnemidophorus deppii Wiegmann, 1834 -- valid -- Huico siete líneas
  Cnemidophorus estebanensis Dickerson, 1919 -- valid -- Huico de San Esteban
  Cnemidophorus exsanguis Lowe, 1956 -- valid -- Chihuahuan Spotted Whiptail, Huico chihuahuense
  Cnemidophorus gularis Baird and Girard, 1852 -- valid -- Huico texano, Texas Spotted Whiptail
  Cnemidophorus guttatus Wiegmann, 1834 -- valid -- Huico picuiliche
  Cnemidophorus hyperythrus Cope, 1863 -- valid -- Huico garganta anaranjada, Orange-throated Whiptail
  Cnemidophorus inornatus Baird, 1859 -- valid -- Huico adornado, Little Striped Whiptail
  Cnemidophorus labialis Stejneger, 1890 -- valid -- Huico de Baja California
  Cnemidophorus laredoensis McKinney, Kay and Anderson, 1973 -- valid -- Huico de Laredo, Laredo Striped Whiptail
  Cnemidophorus lineattissimus Cope, 1878 -- valid -- Huico muchas líneas
  Cnemidophorus martyris Stejneger, 1892 -- valid -- Huico de San Pedro Mártir
  Cnemidophorus maximus Cope, 1863 -- valid -- Huico del Cabo
  Cnemidophorus mexicanus Peters, 1869 -- valid -- Huico mexicano
  Cnemidophorus motaguae Sackett, 1941 -- valid -- Giant Whiptail, Huico gigante
  Cnemidophorus neomexicanus Lowe and Zweifel, 1952 -- valid -- Huico de Nuevo México, New Mexican Whiptail, New Mexico Whiptail
  Cnemidophorus opatae Wright, 1967 -- valid -- Huico opata
  Cnemidophorus parvisocius Zweifel, 1960 -- valid -- Huico pigmeo
  Cnemidophorus rodecki McCoy and Maslin, 1962 -- valid -- Huico de Rodeck
  Cnemidophorus sonorae Lowe and Wright, 1964 -- valid -- Huico de Sonora, Sonoran Spotted Whiptail
  Cnemidophorus tesselatus (Say in James, 1823) -- valid -- Checkered Whiptail, Colorado Checkered Whiptail, Common Checkered Whiptail, Huico de cuadros
  Cnemidophorus tigris Baird and Girard, 1852 -- valid -- Huico occidental, Western Whiptail
  Cnemidophorus uniparens Wright and Lowe, 1965 -- valid -- 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 -- coulicou à bec jaune, Cuclillo pico amarillo, Yellow-billed Cuckoo
  Coccyzus erythropthalmus (A. Wilson, 1811) -- valid -- Black-billed Cuckoo, coulicou à bec noir, Cuclillo pico negro
  Coccyzus minor (Gmelin, 1788) -- valid -- Cuclillo manglero, Mangrove Cuckoo
  Cochlearius cochlearius (Linnaeus, 1766) -- valid -- Boat-billed Heron, Garza cucharón, Savacou huppé
  Coereba flaveola (Linnaeus, 1758) -- valid -- Bananaquit, Reinita-mielera
  Colaptes auratus (Linnaeus, 1758) -- valid -- Carpintero de pechera, Northern Flicker, pic flamboyant
  Coleonyx brevis Stejneger, 1893 -- valid -- Cuija texana, Texas Banded Gecko
  Coleonyx elegans Gray, 1845 -- valid -- Cuija yucateca
  Coleonyx fasciatus (Boulenger, 1885) -- valid -- Cuija negra
  Coleonyx reticulatus Davis and Dixon, 1958 -- valid -- Big Bend gecko, Cuija reticulada, Reticulate Banded Gecko, Reticulated Gecko
  Coleonyx switaki (Murphy, 1974) -- valid -- Barefoot Gecko, Cuija descalza, Switak's Banded Gecko
  Coleonyx variegatus (Baird, 1859) -- valid -- Cuija occidental, Western Banded Gecko
  Colibri thalassinus (Swainson, 1827) -- valid -- Colibrí oreja violeta, Green Violet-ear, Green Violetear
  Colinus nigrogularis (Gould, 1843) -- valid -- Black-throated Bobwhite, Codorniz yucateca, Yucatan Bobwhite
  Colinus virginianus (Linnaeus, 1758) -- valid -- Codorniz cotuí, colin de Virginie, Northern Bobwhite
  Coluber constrictor Linnaeus, 1758 -- valid -- Culebra-corredora constrictor, Racer
  Columba cayennensis Bonnaterre, 1792 -- invalid -- Paloma colorada
  Columba fasciata Say, 1823 -- invalid -- Band-tailed Pigeon, Paloma de collar
  Columba flavirostris Wagler, 1831 -- invalid -- Paloma morada, Red-billed Pigeon
  Columba leucocephala Linnaeus, 1758 -- invalid -- Paloma corona blanca, White-crowned Pigeon
  Columba livia Gmelin, 1789 -- valid -- Common Pigeon, Paloma doméstica, pigeon biset, Rock Dove, Rock Pigeon
  Columba nigrirostris P. L. Sclater, 1860 -- invalid -- Paloma triste
  Columba speciosa Gmelin, 1789 -- invalid -- Paloma escamosa
  Columbina inca (Lesson, 1847) -- valid -- Inca Dove, Tórtola cola larga
  Columbina minuta (Linnaeus, 1766) -- valid -- Plain-breasted Ground Dove, Plain-breasted Ground-Dove, Tórtola pecho liso
  Columbina passerina (Linnaeus, 1758) -- valid -- Common Ground Dove, Common Ground-Dove, Tórtola coquita
  Columbina talpacoti (Temminck, 1810) -- valid -- Ruddy Ground Dove, Ruddy Ground-Dove, Tórtola rojiza
  Conepatus leuconotus (Lichtenstein, 1832) -- valid -- American Hog-nosed Skunk, badger skunk, eastern hog-nosed skunk, rooter skunk, Texas skunk, white-backed hog-nosed skunk, Zorrillo-narigón occidental
  Conepatus mesoleucus (Lichtenstein, 1832) -- invalid -- hog-nosed skunk, western hog-nosed skunk, Zorrillo-narigón norteño
  Coniophanes alvarezi Campbell, 1989 -- valid -- Culebra sin rayas-chiapaneca
  Coniophanes bipunctatus (Günther, 1858) -- valid -- Culebra dos puntos
  Coniophanes fissidens (Günther, 1858) -- valid -- Culebra vientre amarillo
  Coniophanes imperialis (Kennicott in Baird, 1859) -- valid -- Culebra rayas negras, Regal Black-striped Snake
  Coniophanes lateritius Cope, 1862 -- valid -- Culebra sin rayas
  Coniophanes meridanus Schmidt and Andrews, 1936 -- valid -- Culebra sin rayas-peninsular
  Coniophanes piceivittis Cope, 1870 -- valid -- Culebra rayada-de Cope
  Coniophanes quinquevittatus (Duméril, Bibron and Duméril, 1854) -- valid -- Culebra rayada-escofinada
  Conophis lineatus (Duméril, Bibron and Duméril, 1854) -- valid -- Culebra-guardacaminos lineada
  Conophis pulcher Cope, 1869 -- valid -- Culebra-guardacaminos hermosa
  Conophis vittatus Peters, 1860 -- valid -- Culebra-guardacaminos rayada
  Conopsis biserialis Taylor and Smith, 1942 -- valid -- Culebra-terrestre dos líneas
  Conopsis nasus Günther, 1858 -- valid -- Culebra-terrestre narigona
  Contopus borealis (Swainson, 1832) -- invalid -- Olive-sided Flycatcher, Pibí boreal
  Contopus cinereus (Spix, 1825) -- valid -- Pibí tropical, Tropical Pewee
  Contopus pertinax Cabanis & Heine, 1859 -- valid -- Greater Pewee, Pibí tengofrío
  Contopus sordidulus P. L. Sclater, 1859 -- valid -- Pibí occidental, Western Wood Pewee, Western Wood-Pewee
  Contopus virens (Linnaeus, 1766) -- valid -- Eastern Wood Pewee, Eastern Wood-Pewee, Pibí oriental, pioui de l'est
  Cophosaurus texanus Troschel, 1852 -- valid -- Greater Earless Lizard, Lagartija-sorda mayor, Texas Greater Earless Lizard
  Coragyps atratus (Bechstein, 1793) -- valid -- Black Vulture, Urubu noir, Zopilote común
  Corvus brachyrhynchos C. L. Brehm, 1822 -- valid -- American Crow, corneille d'Amérique, Cuervo americano
  Corvus corax Linnaeus, 1758 -- valid -- Common Raven, Cuervo común, grand corbeau, Northern Raven
  Corvus cryptoleucus Couch, 1854 -- valid -- Chihuahuan Raven, Cuervo llanero
  Corvus imparatus J. L. Peters, 1929 -- valid -- Cuervo tamaulipeco, Mexican Crow, Tamaulipas Crow
  Corvus sinaloae L. I. Davis, 1958 -- valid -- Cuervo sinaloense, Sinaloa Crow
  Corytophanes cristatus (Merrem, 1821) -- valid -- Smooth Helmeted Iguana, Turipache cabeza lisa
  Corytophanes percarinatus A. H. A. Duméril, 1856 -- valid -- Keeled Helmeted Basilisk, Keeled Helmeted Iguana, Turipache aquillado
  Cotinga amabilis Gould, 1857 -- valid -- Cotinga azuleja, Lovely Cotinga
  Coturnicops noveboracensis (Gmelin, 1789) -- valid -- Polluela amarilla, râle jaune, Yellow Rail
  Crax rubra Linnaeus, 1758 -- valid -- Great Curassow, Hocofaisán
  Crocodylus acutus Cuvier, 1807 -- valid -- American Crocodile, caiman de la costa, Central American alligator, cocodrilo, Cocodrilo americano, lagarto
  Crocodylus moreletii Duméril and Bibron, 1851 -- valid -- Belize Crocodile, Central American Crocodile, Cocodrilo de Moreleti, Morelet's Crocodile
  Crotalus atrox Baird and Girard, 1853 -- valid -- Víbora-cascabel de diamantes, Western Diamond-backed Rattlesnake, Western Diamondback Rattlesnake
  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 -- Cascabel Rattlesnake, Central American Rattlesnake, South American Rattlesnake, Víbora-cascabel tropical
  Crotalus enyo (Cope, 1861) -- valid -- Baja California Rattlesnake, Lower California Rattlesnake, Víbora-cascabel bajacaliforniana
  Crotalus intermedius Troschel, 1865 -- valid -- Mexican Smallhead Rattlesnake, Víbora-cascabel enana
  Crotalus lannomi Tanner, 1966 -- valid -- Autlán Long-tailed Rattlesnake, Manantlán Long-tailed Rattlesnake, Víbora-cascabel de Autlán
  Crotalus lepidus (Kennicott, 1861) -- valid -- Rock Rattlesnake, Víbora-cascabel variable
  Crotalus molossus Baird and Girard, 1853 -- valid -- Black-tailed Rattlesnake, Víbora-cascabel cola negra
  Crotalus polystictus (Cope, 1865) -- valid -- Mexican Lancehead Rattlesnake, Víbora-cascabel ocelada
  Crotalus pricei Van Denburgh, 1895 -- valid -- Twin-spotted Rattlesnake, Víbora-cascabel motas gemelas
  Crotalus pusillus Klauber, 1952 -- valid -- Tancitaran Dusky Rattlesnake, Víbora-cascabel de Tancítaro
  Crotalus ruber Cope, 1892 -- valid -- Red Diamond Rattlesnake, Víbora-cascabel colorada
  Crotalus scutulatus (Kennicott, 1861) -- valid -- Green Rattlesnake, Mohave Rattlesnake, Mojave Rattlesnake, Víbora-cascabel del Altiplano
  Crotalus stejnegeri Dunn, 1919 -- valid -- Sinaloan Long-tailed Rattlesnake, Víbora-cascabel cola larga
  Crotalus tortugensis Van Denburgh and Slevin, 1921 -- invalid -- Tortuga Island Rattlesnake, Víbora-cascabel de Isla Tortuga
  Crotalus transversus Taylor, 1944 -- valid -- Cross-banded Mountain Rattlesnake, Víbora-cascabel bandas cruzadas
  Crotalus triseriatus (Wagler, 1830) -- valid -- Central Plateau Dusky Rattlesnake, Víbora-cascabel transvolcánica, Western Dusky Rattlesnake
  Crotalus viridis (Rafinesque, 1818) -- valid -- Prairie Rattlesnake, Víbora-cascabel occidental, Western Rattlesnake
  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, Eastern Collared Lizard, Lagartija-de collar negra
  Crotaphytus reticulatus Baird, 1859 -- valid -- Lagartija-de collar reticulada, Reticulate Collared Lizard
  Crotophaga ani Linnaeus, 1758 -- valid -- Garrapatero pico liso, Smooth-billed Ani
  Crotophaga major Gmelin, 1788 -- valid -- Garrapatero mayor, Greater Ani
  Crotophaga sulcirostris Swainson, 1827 -- valid -- Garrapatero pijuy, Groove-billed Ani
  Cryophis hallbergi Bogert and Duellman, 1963 -- valid -- Culebra-de nebklina de Hallberg
  Cryptotis parva (Say, 1823) -- valid -- bee shrew, Least Shrew, little short-tailed shrew, Musaraña-orejillas mínima, North American Least Shrew, small short-tailed 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 -- Baja California Spiny-tailed Iguana, Cape Spinytail Iguana, Iguana-espinosa de Sonora, Short-crested Spiny-tailed Iguana
  Ctenosaura pectinata (Wiegmann, 1834) -- valid -- Guerreran Spiny-tailed Iguana, Iguana-espinosa mexicana, Mexican Spiny-tailed Iguana, Spiny-tailed Iguana, Western Spiny-tailed Iguana
  Ctenosaura similis (Gray, 1831) -- valid -- Black Iguana, Black Spiny-tailed Iguana, Common Spiny-tailed Iguana, Iguana-espinosa rayada
  Cyanerpes cyaneus (Linnaeus, 1766) -- valid -- Mielero pata roja, Red-legged Honeycreeper
  Cyanerpes lucidus (P. L. Sclater & Salvin, 1859) -- valid -- Mielero brillante, Shining Honeycreeper
  Cyanocitta cristata (Linnaeus, 1758) -- valid -- Blue Jay, Chara azul, geai bleu
  Cyanocitta stelleri (Gmelin, 1788) -- valid -- Chara crestada, geai de Steller, Steller's Jay
  Cyanocompsa cyanoides (Lafresnaye, 1847) -- valid -- Blue-black Grosbeak, Picogordo negro
  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 -- Chara verde, Green Jay, Inca Jay
  Cyanocorax yucatanicus (Dubois, 1875) -- valid -- Chara yucateca, Yucatan Jay
  Cyanolyca cucullata (Ridgway, 1885) -- valid -- Azure-hooded Jay, Chara gorro azul
  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 -- Black-throated Jay, Chara de niebla
  Cyclarhis gujanensis (Gmelin, 1789) -- valid -- Rufous-browed Peppershrike, Vireón ceja rufa
  Cygnus buccinator Richardson, 1831 -- valid -- Cisne trompetero, cygne trompette, Trumpeter Swan
  Cygnus columbianus (Ord, 1815) -- valid -- Cisne de tundra, cygne siffleur, Tundra Swan
  Cynanthus latirostris Swainson, 1827 -- valid -- Broad-billed Hummingbird, Colibrí pico ancho
  Cynanthus sordidus (Gould, 1859) -- valid -- Colibrí oscuro, Dusky Hummingbird
  Cynomys ludovicianus (Ord, 1815) -- valid -- Arizona black-tailed prairie dog, Black-tailed Prairie Dog, Perro-llanero cola negra
  Cypseloides niger (Gmelin, 1789) -- valid -- American Black Swift, Black Swift, Vencejo negro
  Cypseloides storeri Navarro, A. T. Peterson, Escalante & Benitez, 1992 -- valid -- Vencejo frente blanca, White-fronted Swift
  Cyrtonyx montezumae (Vigors, 1830) -- valid -- Codorniz Moctezuma, Montezuma Quail
  Cyrtonyx ocellatus (Gould, 1837) -- valid -- Codorniz ocelada, Ocellated Quail
  Dactylortyx thoracicus (Gambel, 1848) -- valid -- Codorniz silbadora, Singing Quail
  Daptrius americanus (Boddaert, 1783) -- invalid -- Caracara comecacao
  Dasyprocta mexicana Saussure, 1860 -- valid -- Guaqueque mexicano, Mexican Agouti
  Dasyprocta punctata Gray, 1842 -- valid -- Central American Agouti, Guaqueque centroamericano
  Dasypus novemcinctus Linnaeus, 1758 -- valid -- Armadillo nueve bandas, long-nosed armadillo, Nine-banded Armadillo
  Delphinus delphis Linnaeus, 1758 -- valid -- common dolphin, Delfín común, saddle-backed dolphin, Short-beaked Common Dolphin, short-beaked saddle-backed dolphin, Short-beaked Saddleback Dolphin
  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 -- Amazonian Barred Woodcreeper, Trepatroncos barrado
  Dendrocolaptes picumnus Lichtenstein, 1820 -- valid -- Black-banded Woodcreeper, Trepatroncos vientre barrado
  Dendrocygna autumnalis (Linnaeus, 1758) -- valid -- Black-bellied Whistling Duck, Black-bellied Whistling-Duck, Pijije ala blanca
  Dendrocygna bicolor (Vieillot, 1816) -- valid -- dendrocygne fauve, Fulvous Whistling Duck, Fulvous Whistling-Duck, Pijije canelo
  Dendroica caerulescens (J. F. Gmelin, 1789) -- invalid -- Black-throated Blue Warbler, Chipe azulnegro, paruline bleue
  Dendroica castanea (A. Wilson, 1810) -- invalid -- Bay-breasted Warbler, Chipe castaño, paruline à poitrine baie
  Dendroica cerulea (A. Wilson, 1810) -- invalid -- Cerulean Warbler, Chipe cerúleo, paruline azurée
  Dendroica chrysoparia P. L. Sclater & Salvin, 1860 -- invalid -- Chipe mejilla dorada, Golden-cheeked Warbler, Golden-cheeked Wood Warbler
  Dendroica coronata (Linnaeus, 1766) -- invalid -- Chipe coronado, paruline à croupion jaune, Yellow-rumped Warbler
  Dendroica discolor (Vieillot, 1809) -- invalid -- Chipe de pradera, paruline des prés, Prairie Warbler
  Dendroica dominica (Linnaeus, 1766) -- invalid -- Chipe garganta amarilla, paruline à gorge jaune, Yellow-throated Warbler
  Dendroica fusca (Statius Müller, 1776) -- invalid -- Blackburnian Warbler, Chipe garganta naranja, paruline à gorge orangée
  Dendroica graciae S. F. Baird, 1865 -- invalid -- Chipe ceja amarilla, Grace's Warbler
  Dendroica magnolia (A. Wilson, 1811) -- invalid -- Chipe de magnolia, Magnolia Warbler, paruline à tête cendrée
  Dendroica nigrescens (J. K. Townsend, 1837) -- invalid -- Black-throated Gray Warbler, Black-throated Grey Warbler, Chipe negrogris, paruline grise
  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, Palm Warbler, paruline à couronne rousse
  Dendroica pensylvanica (Linnaeus, 1766) -- invalid -- Chestnut-sided Warbler, Chipe flanco castaño, paruline à flancs marron
  Dendroica petechia (Linnaeus, 1766) -- invalid -- American Yellow Warbler, Chipe amarillo, paruline jaune, Yellow Warbler
  Dendroica pinus (Linnaeus, 1766) -- invalid -- Chipe pinero, paruline des pins, Pine Warbler
  Dendroica striata (J. R. Forster, 1772) -- invalid -- Blackpoll Warbler, Chipe gorra negra, paruline rayée
  Dendroica tigrina (J. F. Gmelin, 1789) -- invalid -- Cape May Warbler, Chipe atigrado, paruline tigrée
  Dendroica townsendi (J. K. Townsend, 1837) -- invalid -- Chipe negroamarillo, Townsend's Warbler
  Dendroica virens (J. F. Gmelin, 1789) -- invalid -- Black-throated Green Warbler, Chipe dorso verde, paruline à gorge noire
  Dendrophidion vinitor Smith, 1941 -- valid -- Culebra-corredora barrada
  Dendrortyx barbatus Gould, 1846 -- valid -- Bearded Wood Partridge, Bearded Wood-Partridge, Codorniz-coluda veracruzana
  Dendrortyx leucophrys (Gould, 1844) -- valid -- Buffy-crowned Wood Partridge, Buffy-crowned Wood-Partridge, Codorniz-coluda centroamericana
  Dendrortyx macroura (Jardine & Selby, 1828) -- valid -- Codorniz-coluda neovolcánica, Long-tailed Wood Partridge, 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 -- Central American River Turtle, Tortuga-riverina centroamericana
  Dermochelys coriacea (Vandelli, 1761) -- valid -- Leatherback, Leatherback Sea Turtle, leatherback turtle, tinglar, tortue luth, Tortuga-marina laúd
  Dermophis mexicanus (Duméril and Bibron, 1841) -- valid -- Cecilia mexicana
  Dermophis oaxacae (Mertens, 1930) -- valid -- Cecilia oaxaqueña
  Diadophis punctatus (Linnaeus, 1766) -- valid -- couleuvre à collier, Culebra de collar, Ring-necked Snake, Ringneck Snake
  Didelphis marsupialis Linnaeus, 1758 -- valid -- Common Opossum, Tlacuache sureño
  Didelphis virginiana Kerr, 1792 -- valid -- opossum d'Amérique, Tlacuache norteño, Virginia Opossum
  Diglossa baritula Wagler, 1832 -- valid -- Cinnamon-bellied Flowerpiercer, Picaflor canelo
  Diomedea albatrus Pallas, 1769 -- invalid -- Albatros rabón, Short-tailed Albatross
  Diomedea immutabilis Rothschild, 1893 -- invalid -- Albatros de Laysan, Laysan Albatross
  Diomedea nigripes Audubon, 1839 -- invalid -- Albatros pata negra, Black-footed Albatross
  Diphylla ecaudata Spix, 1823 -- valid -- hairy-legged vampire bat, Hairy-legged Vampire Bat, Vampiro pata peluda
  Dipodomys agilis Gambel, 1848 -- valid -- Agile Kangaroo Rat, Rata-canguro ágil
  Dipodomys compactus True, 1889 -- valid -- Gulf Coast Kangaroo Rat, Rata-canguro de Del Padre
  Dipodomys deserti Stephens, 1887 -- valid -- Desert Kangaroo Rat, Rata-canguro desértica
  Dipodomys merriami Mearns, 1890 -- valid -- Merriam's Kangaroo Rat, Rata-canguro de Merriam
  Dipodomys ordii Woodhouse, 1853 -- valid -- Ord's Kangaroo Rat, Rata-canguro común
  Dipodomys spectabilis Merriam, 1890 -- valid -- Banner-tailed Kangaroo Rat, Rata-canguro cola de bandera
  Dipsas brevifacies (Cope, 1866) -- valid -- Culebra-caracolera chata
  Dipsas gaigeae (Oliver, 1937) -- valid -- Culebra-caracolera de Gaige
  Dipsosaurus dorsalis (Baird and Girard, 1852) -- valid -- Common Desert Iguana, Desert Iguana, Iguana de desierto
  Dives dives (Deppe, 1830) -- valid -- Melodious Blackbird, Tordo cantor
  Dolichonyx oryzivorus (Linnaeus, 1758) -- valid -- Bobolink, goglu des prés, Tordo arrocero
  Doricha eliza (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 -- valid -- Culebra-lagartijera de Clifton
  Dryadophis melanolomus (Cope, 1868) -- valid -- Culebra-lagartijera común
  Drymobius chloroticus (Cope, 1886) -- valid -- Culebra-corredora verdosa
  Drymobius margaritiferus (Schlegel, 1837) -- valid -- Central American Speckled Racer, Culebra-corredora de Petatillos
  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 -- Gray Catbird, Grey Catbird, Maullador gris, moqueur chat
  Dysithamnus mentalis (Temminck, 1823) -- valid -- Hormiguero sencillo, Plain Antvireo
  Egretta caerulea (Linnaeus, 1758) -- valid -- aigrette bleu, Aigrette bleue, Garceta azul, Little Blue Heron
  Egretta rufescens (Gmelin, 1789) -- valid -- Aigrette roussâtre, Garceta rojiza, Reddish Egret
  Egretta thula (Molina, 1782) -- valid -- Aigrette neigeuse, Garceta pie-dorado, Snowy Egret
  Egretta tricolor (Statius Muller, 1776) -- valid -- Aigrette tricolore, Garceta tricolor, Tricolored Heron
  Elaenia flavogaster (Thunberg, 1822) -- valid -- Elenia vientre amarillo, Yellow-bellied Elaenia
  Elaenia martinica (Linnaeus, 1766) -- valid -- Caribbean Elaenia, Elenia caribeña
  Elanoides forficatus (Linnaeus, 1758) -- valid -- American Swallow-tailed Kite, Milan à queue fourchue, Milano tijereta, Swallow-tailed Kite
  Elanus leucurus (Vieillot, 1818) -- valid -- Élanion à queue blanche, Milano cola blanca, White-tailed Kite
  Elaphe bairdi (Yarrow, 1880) -- valid -- Baird's Rat Snake, Baird's Ratsnake, Culebra-ratonera de Baird
  Elaphe flavirufa (Cope, 1867) -- valid -- Culebra-ratonera tropical
  Elaphe guttata (Linnaeus, 1766) -- valid -- Corn Snake, Cornsnake, Culebra-ratonera de maiz
  Elaphe phaescens Dowling, 1952 -- valid -- Culebra-ratonera yucateca
  Electron carinatum (Du Bus de Gisignies, 1847) -- valid -- Keel-billed Motmot, Momoto pico quilla
  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) -- valid -- 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 -- Lagarto-escorpión del Sur, Southern Alligator Lizard
  Elgaria parva (Knight and Scudday, 1985) -- valid -- Lagarto-escorpión pigmeo
  Elgaria paucicarinata (Fitch, 1934) -- valid -- Lagarto-escorpión de San Lucas
  Empidonax affinis (Swainson, 1827) -- valid -- Mosquero pinero, Pine Flycatcher
  Empidonax albigularis P. L. Sclater & Salvin, 1859 -- valid -- Mosquero garganta blanca, White-throated Flycatcher
  Empidonax alnorum Brewster, 1895 -- valid -- Alder Flycatcher, Mosquero ailero, moucherolle des aulnes
  Empidonax difficilis S. F. Baird, 1858 -- valid -- Mosquero californiano, Pacific-slope Flycatcher, Western Flycatcher
  Empidonax flavescens Lawrence, 1865 -- valid -- Mosquero amarillento, Yellowish Flycatcher
  Empidonax flaviventris (W. M. Baird & S. F. Baird, 1843) -- valid -- Mosquero vientre amarillo, moucherolle à ventre jaune, Yellow-bellied Flycatcher
  Empidonax fulvifrons (Giraud, 1841) -- valid -- Buff-breasted Flycatcher, Mosquero pecho leonado
  Empidonax hammondii (Xantus de Vesey, 1858) -- valid -- Hammond's Flycatcher, Mosquero de Hammond
  Empidonax minimus (W. M. Baird & S. F. Baird, 1843) -- valid -- Least Flycatcher, Mosquero mímimo, 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, moucherolle des saules, Willow Flycatcher
  Empidonax virescens (Vieillot, 1818) -- valid -- Acadian Flycatcher, Mosquero verdoso, moucherolle vert
  Empidonax wrightii S. F. Baird, 1858 -- valid -- Gray Flycatcher, Grey Flycatcher, Mosquero gris
  Enhydra lutris (Linnaeus, 1758) -- valid -- Nutria marina, Sea Otter
  Ensatina eschscholtzii Gray, 1850 -- valid -- Ensatina, Salamandra ensantina
  Enulius flavitorques (Cope, 1869) -- valid -- Culebra-cola larga del Pacífico
  Enulius oligostichus Smith, Arndt and Sherbrooke, 1967 -- valid -- Culebra-cola larga mexicana
  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 -- big brown bat, Big Brown Bat, grande chauve-souris brune, Murciélago-moreno norteamericano
  Eremophila alpestris (Linnaeus, 1758) -- valid -- Alondra cornuda, alouette hausse-col, Horned Lark
  Erethizon dorsatum (Linnaeus, 1758) -- invalid -- common porcupine, porc-épic d'Amérique, porcupine, Puercoespín norteamericano
  Eretmochelys imbricata (Linnaeus, 1766) -- valid -- carey, Hawksbill, Hawksbill Sea Turtle, Tortuga-marina de carey
  Ergaticus ruber (Swainson, 1827) -- invalid -- Chipe rojo, Red Warbler
  Ergaticus versicolor (Salvin, 1863) -- invalid -- Chipe rosado, Pink-headed Warbler
  Eridiphas slevini (Tanner, 1943) -- valid -- Culebra-nocturna de Baja California
  Eschrichtius robustus (Lilljeborg, 1861) -- valid -- Ballena gris, Gray Whale, grey whale
  Eubalaena glacialis (Müller, 1776) -- valid -- baleine noire, Ballena franca, black right whale, North Atlantic Right Whale, Northern Right Whale
  Eucometis penicillata (von Spix, 1825) -- valid -- Gray-headed Tanager, Grey-headed Tanager, Tángara cabeza gris
  Euderma maculatum (J. A. Allen, 1891) -- valid -- Murciélago pinto, Spotted Bat, spotted bat
  Eudocimus albus (Linnaeus, 1758) -- valid -- American White Ibis, Ibis blanc, Ibis blanco, White Ibis
  Eugenes fulgens (Swainson, 1827) -- valid -- Colibrí magnífico, Magnificent Hummingbird
  Eumeces altamirani Dugès, 1891 -- valid -- Eslizón de Tepalcatepec
  Eumeces brevirostris (Günther, 1860) -- valid -- Eslizón chato
  Eumeces colimensis Taylor, 1935 -- valid -- Eslizón de Colima
  Eumeces copei Taylor, 1933 -- valid -- Eslizón de Cope
  Eumeces gilberti Van Denburgh, 1896 -- valid -- Eslizón de Gilbert, Gilbert's Skink
  Eumeces lagunensis Van Denburgh, 1895 -- valid -- Eslizón de San Lucas
  Eumeces lynxe Wiegmann, 1834 -- valid -- Eslizón encinero
  Eumeces multilineatus Tanner, 1957 -- valid -- Eslizón de Chihuahua
  Eumeces multivirgatus (Hallowell, 1857) -- valid -- Eslizón muchas líneas, Many-lined Skink
  Eumeces obsoletus (Baird and Girard, 1852) -- valid -- Eslizón de la Gran Planicie, Great Plains Skink
  Eumeces ochoterenae Taylor, 1933 -- valid -- Eslizón guerrerense
  Eumeces parviauriculatus Taylor, 1933 -- valid -- Eslizón pigmeo-norteño
  Eumeces parvulus Taylor, 1933 -- valid -- Eslizón pigmeo-del sur
  Eumeces schwartzei Fischer, 1884 -- valid -- Eslizón de Schwartz
  Eumeces skiltonianus (Baird and Girard, 1852) -- valid -- Eslizón occidental, Western Skink
  Eumeces sumichrasti (Cope, 1866) -- valid -- Eslizón listado
  Eumeces tetragrammus (Baird, 1859) -- valid -- Eslizón cuatro líneas, Four-lined Skink
  Eumomota superciliosa (Sandbach, 1837) -- valid -- Momoto ceja azul, Turquoise-browed Motmot
  Eumops glaucinus (Wagner, 1843) -- valid -- Murciélago-con bonete de Wagner, Wagner's Bonneted Bat, Wagner's mastiff-bat
  Eumops perotis (Schinz, 1821) -- valid -- Greater Bonneted Bat, Murciélago-con bonete mayor, Western Bonneted Bat, western mastiff-bat
  Eumops underwoodi Goodwin, 1940 -- valid -- Murciélago-con bonete de Underwood, Underwood's Bonneted Bat, Underwood's mastiff-bat
  Euphagus carolinus (Statius Muller, 1776) -- valid -- quiscale rouilleux, Rusty Blackbird, Tordo canadiense
  Euphagus cyanocephalus (Wagler, 1829) -- valid -- Brewer's Blackbird, quiscale de Brewer, Tordo ojo amarillo
  Eupherusa cyanophrys J. S. Rowley & Orr, 1964 -- valid -- Blue-capped Hummingbird, Colibrí oaxaqueño, Oaxaca Hummingbird
  Eupherusa eximia (Delattre, 1843) -- valid -- Colibrí cola rayada, Stripe-tailed Hummingbird
  Eupherusa poliocerca Elliot, 1871 -- valid -- Colibrí cola blanca, White-tailed Hummingbird
  Euphonia affinis (Lesson, 1842) -- valid -- Eufonia garganta negra, Scrub Euphonia
  Euphonia elegantissima (Bonaparte, 1838) -- valid -- Elegant Euphonia, Eufonia capucha azul
  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 -- Eared Quetzal, Eared Trogon, Trogón orejón
  Eurypyga helias (Pallas, 1781) -- valid -- Ave sol, Sunbittern
  Euthlypis lachrymosa (Bonaparte, 1850) -- invalid -- Chipe de roca, Fan-tailed Warbler
  Exiliboa placata Bogert, 1968 -- valid -- Boa-enana oaxaqueña
  Falco columbarius Linnaeus, 1758 -- valid -- Faucon émerillon, Halcón esmerejón, Merlin
  Falco deiroleucus Temminck, 1825 -- valid -- Faucon orangé, Halcón pecho rufo, Orange-breasted Falcon
  Falco femoralis Temminck, 1822 -- valid -- Aplomado Falcon, Faucon aplomado, Halcón fajado
  Falco mexicanus Schlegel, 1850 -- valid -- Faucon des prairies, Halcón mexicano, Prairie Falcon
  Falco peregrinus Tunstall, 1771 -- valid -- Faucon pèlerin, faucon pélerin, Halcón peregrino, Peregrine Falcon
  Falco rufigularis Daudin, 1800 -- valid -- Bat Falcon, Faucon des chauves-souris, Halcón enano
  Falco sparverius Linnaeus, 1758 -- valid -- American Kestrel, Cernícalo americano, Crécerelle d'Amérique
  Feresa attenuata Gray, 1874 -- valid -- Orca pigmea, Pygmy Killer Whale
  Ficimia olivacea Gray, 1849 -- valid -- Culebra-naricilla huasteca
  Ficimia publia Cope, 1866 -- valid -- Culebra-naricilla manchada
  Ficimia ramirezi Smith and Langebartel, 1950 -- valid -- Culebra-naricilla de Ramírez
  Ficimia ruspator Smith and Taylor, 1941 -- valid -- Culebra-naricilla guerrerense
  Ficimia streckeri Taylor, 1931 -- valid -- Culebra-naricilla mexicana, Mexican Hook-nosed Snake, Tamaulipan Hook-nosed Snake
  Ficimia variegata (Günther, 1858) -- valid -- Culebra-naricilla de Tehuantepec
  Florisuga mellivora (Linnaeus, 1758) -- valid -- Colibrí nuca blanca, White-necked Jacobin
  Formicarius analis (Orbigny & Lafresnaye, 1837) -- valid -- Black-faced Antthrush, Hormiguero-cholino cara negra
  Forpus cyanopygius (Souance, 1856) -- valid -- Mexican Parrotlet, Perico catarina
  Fregata magnificens Mathews, 1914 -- valid -- Fragata magnífica, Frégate superbe, Magnificent Frigatebird
  Fregata minor (Gmelin, 1789) -- valid -- Fragata pelágica, Frégate du Pacifique, Great Frigatebird
  Fulica americana Gmelin, 1789 -- valid -- American Coot, foulque d'Amérique, Gallareta americana
  Fulmarus glacialis (Linnaeus, 1761) -- valid -- Fulmar boréal, Fulmar norteño, Northern Fulmar
  Galbula ruficauda Cuvier, 1816 -- valid -- Jacamar cola rufa, Rufous-tailed Jacamar
  Gallinago gallinago (Linnaeus, 1758) -- valid -- Agachona común, Bécassine des marais, Common Snipe
  Gallinula chloropus (Linnaeus, 1758) -- valid -- Common Moorhen, Gallineta frente roja, gallinule poule-d'eau
  Gambelia wislizenii (Baird and Girard, 1852) -- valid -- Lagartija-leopardo narigona, Long-nosed Leopard Lizard, 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) -- valid -- Sapo-boca angosta huasteco
  Gavia adamsii (G. R. Gray, 1859) -- valid -- Colimbo de Adams, Plongeon à bec blanc, White-billed Diver, Yellow-billed Loon
  Gavia immer (Brunnich, 1764) -- valid -- Colimbo mayor, Common Loon, Great Northern Diver, Great Northern Loon, Plongeon huard
  Gavia pacifica (Lawrence, 1858) -- valid -- Colimbo pacífico, Pacific Diver, Pacific Loon, Plongeon du Pacifique
  Gavia stellata (Pontoppidan, 1763) -- valid -- Colimbo menor, Plongeon catmarin, Red-throated Diver, Red-throated Loon
  Geagras redimitus Cope, 1876 -- valid -- Culebra-minera de Tehuantepec
  Gehyra mutilata (Wiegmann, 1834) -- valid -- Geco plano, Mutilating Gecko, Stump-toed Gecko
  Geococcyx californianus (Lesson, 1829) -- valid -- Correcaminos norteño, Greater Roadrunner
  Geococcyx velox (Wagner, 1836) -- valid -- Correcaminos tropical, Lesser Roadrunner
  Geomys arenarius Merriam, 1895 -- valid -- Desert Pocket Gopher, Tuza arenera
  Geomys personatus True, 1889 -- valid -- Texas Pocket Gopher, Tuza texana
  Geophis anocularis Dunn, 1920 -- valid -- Culebra-minera de Sierra Mije
  Geophis bicolor Günther, 1868 -- valid -- Culebra-minera del Altiplano
  Geophis blanchardi Taylor and Smith, 1939 -- valid -- Culebra-minera de Blanchard
  Geophis cancellatus H. M. Smith, 1941 -- valid -- Culebra-minera de Chiapas
  Geophis carinosus Stuart, 1941 -- valid -- Culebra-minera aquillada
  Geophis chalybeus (Wagler, 1830) -- valid -- Culebra-minera veracruzana
  Geophis dubius (Peters, 1861) -- valid -- Culebra-minera de la Mesa del Sur
  Geophis duellmani Smith and Holland, 1969 -- valid -- Culebra-minera de Sierra de Juárez
  Geophis dugesi Bocourt, 1883 -- valid -- Culebra-minera de Chihuahua
  Geophis immaculatus Downs, 1967 -- valid -- Culebra-minera inmaculada
  Geophis incomptus Duellman, 1959 -- valid -- Culebra-minera de Sierra Coacolman
  Geophis isthmicus (Boulenger, 1894) -- valid -- Culebra-minera de Tehuantepec
  Geophis laticinctus Smith and Williams, 1963 -- valid -- Culebra-minera de la Mesa Central
  Geophis latifrontalis Garman, 1883 -- valid -- Culebra-minera potosina
  Geophis maculiferus Taylor, 1941 -- valid -- Culebra-minera michoacana
  Geophis mutitorques (Cope, 1885) -- valid -- Culebra-minera de tierras altas
  Geophis nasalis (Cope, 1868) -- valid -- culeba-minera del café
  Geophis nigrocinctus Duellman, 1959 -- valid -- Culebra-minera rayas negras
  Geophis omiltemanus Günther, 1893 -- valid -- Culebra-minera guerrerense
  Geophis pyburni Campbell and Murphy, 1977 -- valid -- Culebra-minadora de Pyburn
  Geophis russatus Smith and Williams, 1966 -- valid -- Culebra-minadora roja
  Geophis sallaei Boulenger, 1894 -- valid -- Culebra-minadora de Salle
  Geophis semidoliatus (Duméril, Bibron and Duméril, 1854) -- valid -- Culebra-minadora coralillo
  Geophis sieboldi (Jan, 1862) -- valid -- Culebra-miandora de Siebold
  Geophis tarascae Hartweg, 1959 -- valid -- Culebra-miandora tarasca
  Geothlypis beldingi Ridgway, 1882 -- valid -- Belding's Yellowthroat, Mascarita peninsular, Paruline de Belding
  Geothlypis flavovelata Ridgway, 1896 -- valid -- Altamira Yellowthroat, Mascarita de Altamira, Paruline à couronne jaune
  Geothlypis nelsoni Richmond, 1900 -- valid -- Hooded Yellowthroat, Mascarita matorralera, Paruline de Nelson
  Geothlypis poliocephala S. F. Baird, 1865 -- valid -- Gray-crowned Yellowthroat, Grey-crowned Yellowthroat, Mascarita pico grueso, Paruline à calotte grise
  Geothlypis speciosa P. L. Sclater, 1859 -- valid -- Black-polled Yellowthroat, Mascarita transvolcánica, Paruline à face noire
  Geothlypis trichas (Linnaeus, 1766) -- valid -- Common Yellowthroat, Mascarita común, Paruline masquée
  Geotrygon albifacies P. L. Sclater, 1858 -- valid -- Paloma-perdiz cara blanca, White-faced Quail-Dove
  Geotrygon lawrencii Salvin, 1874 -- valid -- Paloma-perdiz tuxtleña, Purplish-backed Quail-Dove
  Geotrygon montana (Linnaeus, 1758) -- valid -- Paloma-perdiz rojiza, Ruddy Quail-Dove
  Geranospiza caerulescens (Vieillot, 1817) -- valid -- Buse échasse, Crane Hawk, Gavilán zancón
  Gerrhonotus liocephalus Wiegmann, 1828 -- valid -- Lagarto-escorpión texano, Smooth-headed Alligator Lizard, Texas Alligator Lizard
  Gerrhonotus lugoi McCoy, 1970 -- valid -- Lagarto-escorpión de Lugo
  Glaucidium brasilianum (Gmelin, 1788) -- valid -- Ferruginous Pygmy Owl, Ferruginous Pygmy-Owl, Tecolote bajeño
  Glaucidium gnoma Wagler, 1832 -- valid -- Mountain Pygmy Owl, Northern Pygmy-Owl, Tecolote serrano
  Glaucidium griseiceps Sharpe, 1875 -- valid -- Central American Pygmy Owl, Central American Pygmy-Owl, Tecolote mesoamericano
  Glaucidium palmarum Nelson, 1901 -- valid -- Colima Pygmy Owl, Colima Pygmy-Owl, Tecolote colimense
  Glaucidium sanchezi Lowery & R. J. Newman, 1949 -- valid -- Tamaulipas Pygmy Owl, Tamaulipas Pygmy-Owl, Tecolote tamaulipeco
  Glaucomys volans (Linnaeus, 1758) -- valid -- Ardilla-voladora del sur, petit polatouche, Southern Flying Squirrel
  Gonatodes albogularis (Duméril and Bibron, 1836) -- valid -- Geco cabeza amarilla, Yellow-headed Gecko
  Gopherus berlandieri (Agassiz, 1857) -- valid -- Berlandier's Tortoise, Galápago tamaulipeco, Texas Tortoise
  Gopherus flavomarginatus Legler, 1959 -- valid -- Bolson Tortoise, Galápago de Mapimí
  Grallaria guatimalensis Prevost & Des Murs, 1842 -- valid -- Hormiguero-cholino escamoso, Scaled Antpitta
  Grampus griseus (G. Cuvier, 1812) -- valid -- Delfín chato, grampus, Risso's Dolphin
  Granatellus sallaei (Bonaparte, 1856) -- valid -- Granatelo yucateco, Gray-throated Chat, Grey-throated Chat
  Granatellus venustus Bonaparte, 1850 -- valid -- Granatelo mexicano, Red-breasted Chat
  Grus americana (Linnaeus, 1758) -- valid -- Grulla blanca, Whooping Crane
  Grus canadensis (Linnaeus, 1758) -- valid -- grue du Canada, Grulla gris, Sandhill Crane
  Guiraca caerulea (Linnaeus, 1758) -- invalid -- Blue Grosbeak, guicara bleu, Picogordo azul
  Gyalopion canum Cope, 1860 -- valid -- Chihuahuan Hook-nosed Snake, Culebra-nariz ganchuda de Chihuahua, Western Hook-nosed Snake
  Gyalopion quadrangulare (Günther, 1893) -- valid -- Culebra-nariz ganchuda de desierto, Thornscrub Hook-nosed Snake
  Gymnogyps californianus (Shaw, 1797) -- valid -- California Condor, Cóndor californiano, Condor de Californie
  Gymnophthalmus speciosus (Hallowell, 1861) -- valid -- Lagartija-anteojada dorada
  Gymnorhinus cyanocephalus Wied-Neuwied, 1841 -- valid -- Chara piñonera, Pinyon Jay
  Habia fuscicauda (Cabanis, 1861) -- valid -- Red-throated Ant Tanager, Red-throated Ant-Tanager, Tángara-hormiguera garganta roja
  Habia rubica (Vieillot, 1817) -- valid -- Red-crowned Ant Tanager, Red-crowned Ant-Tanager, Tángara-hormiguera corona roja
  Haematopus bachmani Audubon, 1838 -- valid -- American Black Oystercatcher, Black Oystercatcher, Huîtrier de Bachman, Ostrero negro
  Haematopus palliatus Temminck, 1820 -- valid -- American Oystercatcher, Huîtrier d'Amérique, Ostrero americano
  Haliaeetus leucocephalus (Linnaeus, 1766) -- valid -- Águila cabeza blanca, Bald Eagle, Pygargue à tête blanche
  Haplospiza rustica (Tschudi, 1844) -- valid -- Semillero pizarra, Slaty Finch
  Harpagus bidentatus (Latham, 1790) -- valid -- Double-toothed Kite, Gavilán bidentado, Milan bidenté
  Harpia harpyja (Linnaeus, 1758) -- valid -- Águila arpía, Harpie féroce, Harpy Eagle
  Harpyhaliaetus solitarius (Tschudi, 1844) -- valid -- Águila solitaria, Buse solitaire, Montane Solitary Eagle, Solitary Eagle
  Heliomaster constantii (Delattre, 1843) -- valid -- Colibrí picudo, Plain-capped Starthroat
  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, paruline vermivore, Worm-eating Warbler
  Heloderma horridum (Wiegmann, 1829) -- valid -- Beaded Lizard, Lagarto enchaquirado, Mexican Beaded Lizard
  Heloderma suspectum Cope, 1869 -- valid -- Gila Monster, Lagarto de Gila
  Hemidactylus frenatus Schlegel, 1836 -- valid -- Bridled House Gecko, Common House Gecko, Geco-casero bocón
  Hemidactylus mabouia (Moreau De Jonnès, 1818) -- valid -- Afro-American House Gecko, Afroamerican house gecko, Cosmopolitan House Gecko, Geco-casero tropical, Wood Slave
  Hemidactylus turcicus (Linnaeus, 1758) -- valid -- Geco-casero del Mediterráneo, Mediterranean Gecko, Mediterranean Gekko, Mediterranean House Gecko
  Henicorhina leucophrys (Tschudi, 1844) -- valid -- Chivirín pecho gris, Gray-breasted Wood-Wren, Grey-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 -- Halcón guaco, Laughing Falcon, Macagua rieur
  Heterodon nasicus Baird and Girard, 1852 -- valid -- Culebra-nariz de cerdo occidental, Western Hog-nosed Snake
  Heteroscelus incanus (Gmelin, 1789) -- invalid -- Playero vagabundo, Wandering Tattler
  Himantopus mexicanus (Statius Muller, 1776) -- valid -- Ae'o, Black-necked Stilt, Candelero americano, echasse d'Amérique, Échasse d'Amérique, Hawaiian Stilt
  Hirundo fulva Vieillot, 1808 -- invalid -- Cave Swallow, Golondrina pueblera
  Hirundo pyrrhonota Vieillot, 1817 -- invalid -- Cliff Swallow, Golondrina risquera
  Hirundo rustica Linnaeus, 1758 -- valid -- Barn Swallow, Golondrina tijereta, hirondelle rustique
  Histrionicus histrionicus (Linnaeus, 1758) -- valid -- arlequin plongeur, Harlequin Duck, Pato arlequín
  Holbrookia lacerata Cope, 1880 -- valid -- Lagartija-sorda cola punteada, Northern Spot-tailed Earless Lizard, Plateau Earless Lizard, Spot-tailed Earless Lizard
  Holbrookia maculata Girard, 1851 -- valid -- Common Earless Lizard, Common Lesser Earless Lizard, Lagartija-sorda menor, 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 -- valid -- 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 -- valid -- Rana-de árbol de Los Altos-del Sur
  Hyla eximia Baird, 1854 -- valid -- 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 -- valid -- 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 -- valid -- Rana-de árbol de Walker
  Hylocharis eliciae (Bourcier & Mulsant, 1846) -- valid -- Blue-throated Goldentail, Blue-throated Sapphire, Zafiro garganta azul
  Hylocharis leucotis (Vieillot, 1818) -- valid -- White-eared Hummingbird, Zafiro oreja blanca
  Hylocharis xantusii (Lawrence, 1860) -- valid -- Xantus's Hummingbird, Zafiro de Xantus
  Hylocichla mustelina (Gmelin, 1789) -- valid -- grive des bois, Wood Thrush, Zorzal maculado
  Hylomanes momotula Lichtenstein, 1839 -- valid -- Momoto enano, Tody Motmot
  Hylophilus decurtatus (Bonaparte, 1838) -- valid -- Lesser Greenlet, Verdillo gris
  Hylophilus ochraceiceps P. L. Sclater, 1860 -- valid -- Tawny-crowned Greenlet, Verdillo ocre
  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 -- Ballena-picuda frente plana, southern bottle-nosed whale, Southern Bottlenose Whale
  Hypopachus barberi Schmidt, 1939 -- valid -- Rana-oveja de Barber
  Hypopachus variolosus (Cope, 1866) -- valid -- Northern Sheep Frog, Rana-oveja común, Sheep Frog
  Hypsiglena torquata (Günther, 1860) -- valid -- Culebra-nocturna ojo de gato, Night Snake, Nightsnake
  Ibycter americanus (Boddaert, 1783) -- valid -- Caracara à gorge rouge, Caracara comecacao, Red-throated Caracara
  Icteria virens (Linnaeus, 1758) -- valid -- Buscabreña, Paruline polyglotte, Yellow-breasted Chat
  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 -- Bolsero encapuchado, Hooded Oriole
  Icterus dominicensis (Linnaeus, 1766) -- valid -- Black-cowled Oriole, Bolsero dominico, Greater Antillean Oriole
  Icterus galbula (Linnaeus, 1758) -- valid -- Baltimore Oriole, Bolsero de Baltimore, Northern 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 -- Bar-winged Oriole, Bolsero guatemalteco
  Icterus mesomelas (Wagler, 1829) -- valid -- Bolsero cola amarilla, Yellow-tailed Oriole
  Icterus parisorum Bonaparte, 1838 -- valid -- Bolsero tunero, Scott's Oriole
  Icterus pectoralis (Wagler, 1829) -- valid -- Bolsero pecho manchado, Spot-breasted Oriole
  Icterus pustulatus (Wagler, 1829) -- valid -- Bolsero dorso rayado, Streak-backed Oriole
  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 -- Milan du Mississippi, Milano de Misisipi, Mississippi Kite
  Ictinia plumbea (Gmelin, 1788) -- valid -- Milan bleuâtre, Milano plomizo, Plumbeous Kite
  Idionycteris phyllotis (G. M. Allen, 1916) -- valid -- Allen's big-eared bat, Allen's Big-eared Bat, Murciélago-mula de Allen
  Iguana iguana (Linnaeus, 1758) -- valid -- Common Green Iguana, Green Iguana, Iguana verde, iguane commun
  Imantodes cenchoa (Linnaeus, 1758) -- valid -- Blunt-headed Treesnake, Blunthead Treesnake, Culebra-cordelilla chata, Fiddle-string Snake
  Imantodes gemmistratus (Cope, 1861) -- valid -- Culebra-cordelilla centroamericana
  Imantodes tenuissimus Cope, 1867 -- valid -- Culebra-cordelilla yucateca
  Ixalotriton niger Wake and Johnson, 1989 -- invalid -- Salamandra-saltarina negra
  Ixobrychus exilis (Gmelin, 1789) -- valid -- Avetoro mínimo, Least Bittern, Petit Blongios
  Ixoreus naevius (Gmelin, 1789) -- valid -- grive à collier, Mirlo pecho cinchado, Varied Thrush
  Jabiru mycteria (Lichtenstein, 1819) -- valid -- Cigüeña jabirú, Jabiru, Jabiru d'Amérique
  Jacana spinosa (Linnaeus, 1758) -- valid -- Jacana du Mexique, Jacana norteña, Northern Jacana
  Junco hyemalis (Linnaeus, 1758) -- valid -- Dark-eyed Junco, junco ardoisé, Junco ojo oscuro
  Junco insularis Ridgway, 1876 -- valid -- Guadalupe Junco, Junco de Guadalupe
  Junco phaeonotus Wagler, 1831 -- valid -- Junco ojo de lumbre, Yellow-eyed Junco
  Kinosternon acutum Gray, 1831 -- valid -- Tabasco Mud Turtle, Tortuga-pecho quebrado de Tabasco
  Kinosternon alamosae Berry and Legler, 1980 -- valid -- Alamos Mud Turtle, Tortuga-pecho quebrado de Álamos
  Kinosternon creaseri Hartweg, 1934 -- valid -- Creaser's Mud Turtle, Tortuga-pecho quebrado de Craser
  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, Rough-footed Mud Turtle, Tortuga-pecho quebrado pata rugosa
  Kinosternon integrum Le Conte, 1854 -- valid -- Mexican Mud Turtle, Tortuga-pecho quebrado mexicana
  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 -- Oaxaca Mud Turtle, Tortuga-pecho quebrado oaxaqueña
  Kinosternon scorpioides (Linnaeus, 1766) -- valid -- Scorpion Mud Turtle, Tortuga-pecho quebrado escorpión
  Kinosternon sonoriense Le Conte, 1854 -- valid -- Sonora Mud Turtle, Sonoran mud turtle, Tortuga-pecho quebrado sonorense
  Kogia breviceps (Blainville, 1838) -- valid -- Cachalote pigmeo, Pygmy Sperm Whale
  Laemanctus longipes Wiegmann, 1834 -- valid -- Eastern Casquehead Iguana, Lemacto coludo
  Laemanctus serratus Cope, 1864 -- valid -- Lemacto coronado, Serrated Casquehead Iguana
  Lagenodelphis hosei Fraser, 1956 -- valid -- Delfín de Fraser, Fraser's Dolphin
  Lagenorhynchus obliquidens Gill, 1865 -- valid -- Delfín costado blanco, Pacific White-sided Dolphin
  Lampornis amethystinus Swainson, 1827 -- valid -- Amethyst-throated Hummingbird, Amethyst-throated Mountaingem, Colibrí garganta amatista
  Lampornis clemenciae (Lesson, 1829) -- valid -- Blue-throated Hummingbird, Blue-throated Mountaingem, Colibrí garganta azul
  Lampornis viridipallens (Bourcier & Mulsant, 1846) -- valid -- Colibrí garganta verde, Green-throated Mountain-gem, Green-throated Mountaingem
  Lamprolaima rhami (Lesson, 1839) -- valid -- Colibrí ala castaña, Garnet-throated Hummingbird
  Lampropeltis alterna (Brown, 1901) -- valid -- Culebra-real bandas grises, Gray-banded Kingsnake
  Lampropeltis getula (Linnaeus, 1766) -- valid -- Common Kingsnake, Culebra-real común
  Lampropeltis mexicana (Garman, 1884) -- valid -- Culebra-real potosina, Gray-banded Kingsnake
  Lampropeltis pyromelana (Cope, 1867) -- valid -- Culebra-real sonorense, Sonoran Mountain Kingsnake
  Lampropeltis ruthveni Blanchard, 1920 -- valid -- Culebra-real de Ruthven
  Lampropeltis triangulum (Lacépède, 1789) -- valid -- couleuvre tachetée, Culebra-real coralillo, Milk Snake, Milksnake
  Lampropeltis zonata (Lockington, 1876 ex Blainville, 1835) -- valid -- California Mountain Kingsnake, Culebra-real californiana
  Lanio aurantius Lafresnaye, 1846 -- valid -- Black-throated Shrike-Tanager, Tángara garganta negra
  Laniocera rufescens (P. L. Sclater, 1858) -- valid -- Plañidera jaspeada, Speckled Mourner
  Lanius ludovicianus Linnaeus, 1766 -- valid -- Alcaudón verdugo, Loggerhead Shrike, pie-grièche migratrice
  Larus argentatus Pontoppidan, 1763 -- valid -- European Herring Gull, Gaviota plateada, Goéland argenté, Herring Gull
  Larus atricilla Linnaeus, 1758 -- invalid -- Gaviota reidora, Laughing Gull, mouette atricille
  Larus californicus Lawrence, 1854 -- valid -- California Gull, Gaviota californiana, Goéland de Californie
  Larus canus Linnaeus, 1758 -- valid -- Gaviota cana, Goéland cendré, Mew Gull
  Larus delawarensis Ord, 1815 -- valid -- Gaviota pico anillado, Goéland à bec cerclé, Ring-billed Gull
  Larus dominicanus Lichtenstein, 1823 -- valid -- Gaviota dominicana, Goéland dominicain, Kelp Gull
  Larus fuscus Linnaeus, 1758 -- valid -- Gaviota sombría, Goéland brun, Lesser Black-backed Gull
  Larus glaucescens J. F. Naumann, 1840 -- valid -- Gaviota ala glauca, Glaucous-winged Gull, Goéland à ailes grises
  Larus heermanni Cassin, 1852 -- valid -- Gaviota ploma, Goéland de Heermann, Heermann's Gull
  Larus hyperboreus Gunnerus, 1767 -- valid -- Gaviota blanca, Glaucous Gull, Goéland bourgmestre
  Larus livens Dwight, 1919 -- valid -- Gaviota pata amarilla, Goéland de Cortez, Yellow-footed Gull
  Larus minutus Pallas, 1776 -- invalid -- Gaviota mínima, Little Gull, mouette pygmée
  Larus occidentalis Audubon, 1839 -- valid -- Gaviota occidental, Goéland d'Audubon, Western Gull
  Larus philadelphia (Ord, 1815) -- invalid -- Bonaparte's Gull, Gaviota de Bonaparte, mouette de Bonaparte
  Larus pipixcan Wagler, 1831 -- invalid -- Franklin's Gull, Gaviota de Franklin, mouette de Franklin
  Larus ridibundus Linnaeus, 1766 -- invalid -- Black-headed Gull, Common Black-headed Gull, Gaviota encapuchada, mouette rieuse
  Larus thayeri W. S. Brooks, 1915 -- valid -- Gaviota de Thayer, Goéland de Thayer, Thayer's Gull
  Lasionycteris noctivagans (Le Conte, 1831) -- valid -- chauve-souris argentée, Murciélago pelo plateado, silver-haired bat, Silver-haired Bat
  Lasiurus blossevillii (Lesson and Garnot, 1826) -- valid -- Murciélago-cola peluda de Blossevilli, Red Bat, Western Red Bat, western red bat
  Lasiurus borealis (Müller, 1776) -- valid -- chauve-souris rousse, eastern red bat, Eastern Red Bat, Murciélago-cola peluda rojizo, red bat
  Lasiurus cinereus (Palisot de Beauvois, 1796) -- valid -- chauve-souris cendrée, Hoary Bat, hoary bat, Murciélago-cola peluda canoso
  Lasiurus ega (Gervais, 1856) -- valid -- Murciélago-cola peluda amarillo, Southern Yellow Bat, southern yellow bat
  Lasiurus intermedius H. Allen, 1862 -- valid -- Murciélago-cola peluda norteño, Northern Yellow Bat, northern yellow bat
  Lasiurus xanthinus (Thomas, 1897) -- valid -- Murciélago-cola peluda de La Laguna, western yellow bat, Western Yellow Bat
  Laterallus jamaicensis (Gmelin, 1789) -- valid -- Black Rail, Polluela negra, râle noir
  Laterallus ruber (P. L. Sclater & Salvin, 1860) -- valid -- Polluela rojiza, Ruddy Crake
  Legatus leucophaius (Vieillot, 1818) -- valid -- Papamoscas pirata, Piratic Flycatcher
  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 -- Olive Ridley, Olive Ridley Sea Turtle, Pacific ridley, Pacific Ridley Sea Turtle, Tortuga-marina escamosa-del Pacífico
  Lepidocolaptes affinis (Lafresnaye, 1839) -- valid -- Spot-crowned Woodcreeper, Trepatroncos corona punteada
  Lepidocolaptes leucogaster (Swainson, 1827) -- valid -- Trepatroncos escarchado, White-striped Woodcreeper
  Lepidocolaptes souleyetii (Des Murs, 1849) -- valid -- Streak-headed Woodcreeper, Trepatroncos corona rayada
  Lepidophyma alvarezi Smith, 1973 -- valid -- Lagartija-nocturna de Álvarez del Toro
  Lepidophyma chicoasensis Alvarez and Valentin, 1988 -- valid -- Lagartija-nocturna del Sumidero
  Lepidophyma dontomasi Smith, 1942 -- valid -- Lagartija-nocturna de MacDougall
  Lepidophyma flavimaculatum Duméril, 1851 -- valid -- Lagartija-nocturna puntos amarillos
  Lepidophyma gaigeae Mosauer, 1936 -- valid -- Lagartija-nocturna de Gaiger
  Lepidophyma lipetzi Smith and Alvarez del Toro, 1977 -- valid -- Lagartija-nocturna del Ocote
  Lepidophyma micropholis Walker, 1955 -- valid -- Lagartija-nocturna de cueva
  Lepidophyma occulor Smith, 1942 -- valid -- Lagartija-nocturna de Jalapa
  Lepidophyma pajapanensis Werler, 1957 -- valid -- Lagartija-nocturna de Pajapan
  Lepidophyma radula Smith, 1942 -- valid -- Lagartija-nocturna de Yautepec
  Lepidophyma sawini Smith, 1973 -- valid -- Lagartija-nocturna de Sawin
  Lepidophyma sylvaticum Taylor, 1939 -- valid -- Lagartija-nocturna de montaña
  Lepidophyma tarascae Bezy, Webb and Alvarez, 1982 -- valid -- Lagartija-nocturna tarasca
  Lepidophyma tuxtlae Werler and Shannon, 1957 -- valid -- Lagartija-nocturna de Los Tuxtlas
  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
  Leptodeira frenata (Cope, 1886) -- valid -- Culebra-ojo de gato de selva
  Leptodeira maculata (Hallowell, 1861) -- valid -- Culebra-ojo de gato del suroeste
  Leptodeira nigrofasciata Günther, 1868 -- valid -- Culebra-ojo de gato cabeza negra
  Leptodeira punctata (Peters, 1867) -- valid -- Culebra-ojo de gato occidental
  Leptodeira septentrionalis (Kennicott in Baird, 1859) -- valid -- Cat-eyed Snake, Culebra-ojo de gato norteña o manchada
  Leptodeira splendida Günther, 1895 -- valid -- Culebra-ojo de gato espléndida
  Leptodon cayanensis (Latham, 1790) -- valid -- Gavilán cabeza gris, Gray-headed Kite, Grey-headed Kite, Milan de Cayenne
  Leptonycteris curasoae Miller, 1900 -- valid -- Curaçaoan Long-nosed Bat, Murciélago-hocicudo de Curazao, southern long-nosed bat
  Leptonycteris nivalis (Saussure, 1860) -- valid -- big long-nosed bat, Mexican Long-nosed Bat, Mexican long-nosed bat, Murciélago-hocicudo mayor
  Leptophis ahaetulla (Linnaeus, 1758) -- valid -- Culebra-perico verde
  Leptophis diplotropis (Günther, 1872) -- valid -- Culebra-perico gargantilla
  Leptophis mexicanus Duméril, Bibron and Duméril, 1854 -- valid -- Culebra-perico mexicana
  Leptophis modestus (Günther, 1872) -- valid -- Culebra-perico de niebla
  Leptopogon amaurocephalus Tschudi, 1846 -- valid -- Mosquero gorra parda, Sepia-capped Flycatcher
  Leptotila cassini (Lawrence, 1867) -- valid -- Gray-chested Dove, Grey-chested Dove, Paloma pecho gris
  Leptotila jamaicensis (Linnaeus, 1766) -- valid -- Caribbean Dove, Paloma caribeña
  Leptotila rufaxilla (Richard & Bernard, 1792) -- valid -- Grey-fronted Dove, Paloma cabeza ploma
  Leptotila verreauxi (Bonaparte, 1855) -- valid -- Paloma arroyera, White-tipped Dove
  Leptotyphlops bressoni Taylor, 1939 -- valid -- Serpiente-lombriz michoacana
  Leptotyphlops humilis (Baird and Girard, 1853) -- valid -- Serpiente-lombriz occidental, Western Slender Blind Snake, Western Threadsnake
  Leptotyphlops maximus Loveridge, 1932 -- valid -- Serpiente-lombriz gigante
  Lepus alleni Mearns, 1890 -- valid -- antelope jack rabbit, Antelope Jackrabbit, Liebre antilope
  Lepus californicus Gray, 1837 -- valid -- black-tailed jack rabbit, Black-tailed Jackrabbit, Liebre cola negra
  Lepus callotis Wagler, 1830 -- valid -- Beautiful-eared jack rabbit, Gaillard jack rabbit, Liebre torda, snow sides, white-sided jack rabbit, White-sided Jackrabbit
  Leucopternis albicollis (Latham, 1790) -- valid -- Aguililla blanca, Buse blanche, White Hawk
  Limnodromus griseus (Gmelin, 1789) -- valid -- Bécassin roux, Costurero pico corto, Short-billed Dowitcher
  Limnodromus scolopaceus (Say, 1822) -- valid -- Bécassin à long bec, Costurero pico largo, Long-billed Dowitcher
  Limnothlypis swainsonii (Audubon, 1834) -- valid -- Chipe corona café, Paruline de Swainson, Swainson's Warbler
  Limosa fedoa (Linnaeus, 1758) -- valid -- Barge marbrée, Marbled Godwit, Picopando canelo
  Limosa haemastica (Linnaeus, 1758) -- valid -- Barge hudsonienne, Hudsonian Godwit, Picopando ornamentado
  Limosa lapponica (Linnaeus, 1758) -- valid -- Bar-tailed Godwit, Barge rousse, Picopando cola barrada
  Liomys irroratus (Gray, 1868) -- valid -- Mexican Spiny Pocket Mouse, Ratón-espinoso mexicano
  Lipaugus unirufus P. L. Sclater, 1860 -- valid -- Pía guardabosques, Rufous Piha
  Lissodelphis borealis (Peale, 1848) -- valid -- Delfín-ballena norteño, Northern Right Whale Dolphin
  Lontra canadensis (Schreber, 1777) -- valid -- common otter, loutre de Canada, loutre de rivière, North American River Otter, northern river otter, nutria del Canada, nutria norteamericana, Nutria-de río norteamericana, river otter
  Lophodytes cucullatus (Linnaeus, 1758) -- valid -- harle couronné, Hooded Merganser, Mergo cresta blanca
  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 -- bec-croisé des sapins, Picotuerto rojo, Red Crossbill
  Loxocemus bicolor Cope, 1861 -- valid -- Serpiente chatilla
  Lurocalis semitorquatus (Gmelin, 1789) -- valid -- Chotacabras cola corta, Short-tailed Nighthawk
  Lynx rufus (Schreber, 1777) -- valid -- Bobcat, Lince americano, lynx roux
  Mabuya brachypoda Taylor, 1956 -- valid -- Mabuya centroamericana
  Macrotus californicus Baird, 1858 -- valid -- California leaf-nosed bat, Californian Leaf-nosed Bat, Murciélago-orejón californiano
  Macrotus waterhousii Gray, 1843 -- valid -- Murciélago-orejón mexicano, Waterhouse's leaf-nosed bat, Waterhouse's Leaf-nosed Bat
  Malacoptila panamensis Lafresnaye, 1847 -- valid -- Buco barbón, White-whiskered Puffbird
  Manacus candei (Parzudaki, 1841) -- valid -- Manaquín cuello blanco, White-collared Manakin
  Manolepis putnami (Jan, 1863) -- valid -- Culebra cabeza surcada
  Marmosa canescens (J. A. Allen, 1893) -- invalid -- Tlacuache-ratón gris
  Marmosa mexicana Merriam, 1897 -- valid -- Mexican Mouse Opossum, Tlacuache-ratón mexicano
  Masticophis anthonyi Stejneger, 1901 -- valid -- Culebra-chirriadora de Isla Clarion
  Masticophis aurigulus (Cope, 1861) -- valid -- Culebra-chirriadora de Baja California
  Masticophis bilineatus Jan, 1863 -- valid -- Culebra-chirriadora sonorense, Sonoran Whipsnake
  Masticophis flagellum (Shaw, 1802) -- valid -- Coachwhip, Culebra-chirriadora común
  Masticophis lateralis (Hallowell, 1853) -- valid -- Culebra-chirriadora rayada, Striped Racer
  Masticophis mentovarius (Duméril, Bibron and Duméril, 1854) -- valid -- Culebra-chirriadora neotropical
  Masticophis taeniatus (Hallowell, 1852) -- valid -- Culebra-chirriadora adornada, Striped Whipsnake
  Megaptera novaeangliae (Borowski, 1781) -- valid -- Ballena jorobada, Humpback Whale, rorqual à bosse
  Megarynchus pitangua (Linnaeus, 1766) -- valid -- Boat-billed Flycatcher, Luis pico grueso
  Megascops barbarus (P. L. Sclater & Salvin, 1868) -- valid -- Bearded Screech Owl, Bearded Screech-Owl, Tecolote barbudo
  Megascops kennicottii (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 -- Carpintero cheje, Golden-fronted Woodpecker
  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, Gray-breasted Woodpecker, Grey-breasted Woodpecker
  Melanerpes lewis (G. R. Gray, 1849) -- valid -- Carpintero de Lewis, Lewis' Woodpecker, Lewis's Woodpecker
  Melanerpes pucherani (Malherbe, 1849) -- valid -- Black-cheeked Woodpecker, Carpintero cara negra
  Melanerpes pygmaeus (Ridgway, 1885) -- valid -- Carpintero yucateco, Yucatan Woodpecker
  Melanerpes uropygialis (S. F. Baird, 1854) -- valid -- Carpintero del desierto, Gila Woodpecker
  Melanitta fusca (Linnaeus, 1758) -- valid -- macreuse brune, Negreta ala blanca, Velvet Scoter, White-winged Scoter
  Melanitta nigra (Linnaeus, 1758) -- valid -- Black Scoter, macreuse noire, Negreta negra
  Melanitta perspicillata (Linnaeus, 1758) -- valid -- macreuse à front blanc, Negreta nuca blanca, Surf Scoter
  Melanoptila glabrirostris P. L. Sclater, 1858 -- valid -- Black Catbird, Maullador negro
  Melanotis caerulescens (Swainson, 1827) -- valid -- Blue Mockingbird, Mulato azul
  Melanotis hypoleucus Hartlaub, 1852 -- valid -- Blue-and-white Mockingbird, Mulato pecho blanco
  Meleagris gallopavo Linnaeus, 1758 -- valid -- dindon sauvage, Guajolote norteño, Wild Turkey
  Melospiza georgiana (Latham, 1790) -- valid -- bruant des marais, Gorrión pantanero, Swamp Sparrow
  Melospiza lincolnii (Audubon, 1834) -- valid -- bruant de Lincoln, Gorrión de Lincoln, Lincoln's Sparrow
  Melospiza melodia (A. Wilson, 1810) -- valid -- bruant chanteur, Gorrión cantor, Song Sparrow
  Melozone biarcuatum (Prévost & Des Murs, 1846) -- invalid -- Rascador patilludo
  Melozone kieneri (Bonaparte, 1850) -- valid -- Rascador nuca rufa, Rusty-crowned Ground Sparrow, Rusty-crowned Ground-Sparrow
  Melozone leucotis Cabanis, 1861 -- valid -- Rascador oreja blanca, White-eared Ground Sparrow, White-eared Ground-Sparrow
  Mephitis macroura Lichtenstein, 1832 -- valid -- Hooded Skunk, Zorrillo-listado del sur
  Mephitis mephitis (Schreber, 1776) -- valid -- mouffette rayée, Striped Skunk, Zorrillo-listado del norte
  Mergus merganser Linnaeus, 1758 -- valid -- Common Merganser, grand harle, Mergo mayor
  Mergus serrator Linnaeus, 1758 -- valid -- harle huppé, Mergo copetón, Red-breasted Merganser
  Mesaspis antauges (Cope, 1866) -- valid -- Lagarto-escorpión de Monte Orizaba
  Mesaspis juarezi (Karges and Wright, 1987) -- valid -- Lagarto-escorpión de Sierra de Juárez
  Mesaspis moreleti (Bocourt, 1871) -- valid -- Lagarto-escorpión de Morelet
  Mesaspis viridiflava (Bocourt, 1873) -- valid -- Lagarto-escorpión enano
  Mesoplodon carlhubbsi Moore, 1963 -- valid -- arch-beaked whale, archbeaked whale, Ballena-picuda de Hubb, Hubbs' Beaked Whale, Hubbs's Beaked Whale
  Mesoplodon densirostris (Blainville, 1817) -- valid -- Ballena-picuda de Blainsville, Blainville's Beaked Whale, dense-beaked whale, densebeak whale
  Mesoplodon ginkgodens Nishiwaki and Kamiya, 1958 -- valid -- Ballena-picuda japonesa, Ginkgo-toothed Beaked Whale, ginkgo-toothed whale
  Mesoplodon peruvianus Reyes, Mead and Van Waerebeek, 1991 -- valid -- Ballena-picuda peruana, Peruvian beaked whale, Pygmy Beaked Whale
  Metachirus nudicaudatus (É. Geoffroy Saint-Hilaire, 1803) -- valid -- Brown Four-eyed Opossum, Tlacuache-cuatrojos café
  Micrastur ruficollis (Vieillot, 1817) -- valid -- Barred Forest Falcon, Barred Forest-Falcon, Carnifex barré, Halcón-selvático barrado
  Micrastur semitorquatus (Vieillot, 1817) -- valid -- Carnifex à collier, Collared Forest Falcon, Collared Forest-Falcon, Halcón-selvático de collar
  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 -- Dot-winged Antwren, Hormiguero ala punteada
  Microtus californicus (Peale, 1848) -- valid -- Amargosa Vole, California Vole, Meteoro de California
  Microtus mexicanus (Saussure, 1861) -- valid -- Meteoro mexicano, Mexican Vole
  Microtus pennsylvanicus (Ord, 1815) -- valid -- campagnol des champs, Meadow Vole, Meteoro de prado
  Micruroides euryxanthus (Kennicott, 1860) -- valid -- Serpiente-coralillo sonorense, Sonoran Coralsnake, Western Coral Snake
  Micrurus bogerti Roze, 1967 -- valid -- Bogert's Coral Snake, Serpiente-coralillo de Bogert
  Micrurus browni K. P. Schmidt and H. M. Smith, 1943 -- valid -- Brown's Coral Snake, Serpiente-coralillo de Brown
  Micrurus diastema (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Diastema Coral Snake, Serpiente-coralillo variable, Variable Coral Snake
  Micrurus distans (Kennicott, 1860) -- valid -- Serpiente-coralillo del oeste mexicano, West Mexican Coral Snake
  Micrurus elegans (Jan, 1858) -- valid -- Elegant Coral Snake, Serpiente-coralillo elegante
  Micrurus ephippifer (Cope, 1886) -- valid -- Oaxacan Coral Snake, Serpiente-coralillo oaxaqueña
  Micrurus fulvius (Linnaeus, 1766) -- valid -- Eastern Coral Snake, Harlequin Coralsnake, Northern Coral Snake, Serpiente-coralillo arlequín
  Micrurus laticollaris (W. C. H. Peters, 1870) -- valid -- Balsas Coral Snake, Serpiente-coralillo del Balsas
  Micrurus latifasciatus K. P. Schmidt, 1933 -- valid -- Broad-ringed Coral Snake, Serpiente-coralillo franjas anchas
  Micrurus limbatus Fraser, 1964 -- valid -- Serpiente-coralillo de Los Tuxtlas, Tuxtlan Coral Snake
  Micrurus nebularis Roze, 1989 -- valid -- Cloud Forest Coral Snake, Serpiente-coralillo de niebla
  Micrurus nigrocinctus (Girard, 1854) -- valid -- Central American Coral Snake, Serpiente-coralillo centroamericana
  Micrurus proximans H. M. Smith and Chrapliwy, 1958 -- valid -- Nayarit Coral Snake, Serpiente-coralillo nayarita
  Mimodes graysoni (Lawrence, 1871) -- invalid -- Centzontle de Socorro, Socorro Mockingbird
  Mimus gilvus (Vieillot, 1808) -- valid -- Centzontle tropical, Tropical Mockingbird
  Mimus graysoni (Lawrence, 1871) -- valid -- Centzontle de Socorro, Socorro Mockingbird
  Mimus polyglottos (Linnaeus, 1758) -- valid -- Centzontle norteño, moqueur polyglotte, Northern Mockingbird
  Mionectes oleagineus (Lichtenstein, 1823) -- valid -- Mosquero ocrillo, Ochre-bellied Flycatcher
  Mirounga angustirostris (Gill, 1866) -- valid -- Elefante-marino norteño, Northern Elephant Seal, northern sea elephant
  Mitrephanes phaeocercus (P. L. Sclater, 1859) -- valid -- Mosquero copetón, Northern Tufted Flycatcher, Tufted Flycatcher
  Mniotilta varia (Linnaeus, 1766) -- valid -- Black-and-white Warbler, Chipe trepador, Paruline noir et blanc
  Molossus molossus (Pallas, 1766) -- valid -- Murciélago-mastín de Pallas, Pallas' free-tailed bat, Pallas's mastiff bat, Pallas's Mastiff Bat
  Molothrus aeneus (Wagler, 1829) -- valid -- Bronzed Cowbird, Tordo ojo rojo
  Molothrus ater (Boddaert, 1783) -- valid -- Brown-headed Cowbird, Tordo cabeza café, vacher à tête brune
  Momotus mexicanus Swainson, 1827 -- valid -- Momoto corona café, Russet-crowned Motmot
  Momotus momota (Linnaeus, 1766) -- valid -- Blue-crowned Motmot, Momoto corona azul
  Monachus tropicalis (Gray, 1850) -- valid -- Caribbean Monk Seal, Foca-monje del Caribe, West Indian monk seal
  Mormoops megalophylla (Peters, 1864) -- valid -- ghost-faced bat, Murciélago-barba arrugada norteño, Peter's ghost-faced bat, 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 -- Bobo norteño, Fou de Bassan, Northern Gannet
  Motacilla alba Linnaeus, 1758 -- valid -- Lavandera blanca, White Wagtail
  Mustela frenata Lichtenstein, 1831 -- valid -- belette à longue queue, Comadreja cola larga, Long-tailed Weasel
  Myadestes occidentalis Stejneger, 1882 -- valid -- Brown-backed Solitaire, Clarín jilguero
  Myadestes townsendi (Audubon, 1838) -- valid -- Clarín norteño, solitaire de Townsend, Townsend's Solitaire
  Myadestes unicolor P. L. Sclater, 1857 -- valid -- Clarín unicolor, Slate-colored Solitaire
  Mycteria americana Linnaeus, 1758 -- valid -- Cigüeña americana, Tantale d'Amérique, Wood Stork
  Myiarchus cinerascens (Lawrence, 1851) -- valid -- Ash-throated Flycatcher, Papamoscas cenizo, tyran à gorge cendrée
  Myiarchus crinitus (Linnaeus, 1758) -- valid -- Great Crested Flycatcher, Papamoscas viajero, 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 -- Papamoscas yucateco, Yucatan Flycatcher
  Myioborus miniatus (Swainson, 1827) -- valid -- Chipe de montaña, Paruline ardoisée, Slate-throated Redstart, Slate-throated Whitestart
  Myioborus pictus (Swainson, 1829) -- valid -- Chipe ala blanca, Painted Redstart, Painted Whitestart, Paruline à ailes blanches
  Myiodynastes luteiventris P. L. Sclater, 1859 -- valid -- Papamoscas atigrado, Sulphur-bellied Flycatcher
  Myiodynastes maculatus (Statius Muller, 1776) -- valid -- Papamoscas rayado, Streaked Flycatcher
  Myiopagis viridicata (Vieillot, 1817) -- valid -- Elenia verdosa, Greenish Elaenia
  Myiozetetes similis (Spix, 1825) -- valid -- Luis gregario, Social Flycatcher
  Myotis auriculus Baker and Stains, 1955 -- valid -- Miotis orejudo, Southwestern Myotis, southwestern myotis
  Myotis californicus (Audubon and Bachman, 1842) -- valid -- California myotis, California Myotis, Californian Myotis, Miotis californiano
  Myotis ciliolabrum (Merriam, 1886) -- valid -- Miotis cara negra, small-footed myotis, western small-footed bat, Western Small-footed Myotis
  Myotis evotis (H. Allen, 1864) -- valid -- long-eared myotis, Long-eared Myotis, Miotis oreja larga
  Myotis fortidens Miller and G. M. Allen, 1928 -- valid -- cinnamon myotis, Cinnamon Myotis, Miotis canelo
  Myotis lucifugus (Le Conte, 1831) -- valid -- little brown bat, little brown myotis, Little Brown Myotis, Miotis norteamericano, petite chauve-souris brune
  Myotis thysanodes Miller, 1897 -- valid -- fringed myotis, Fringed Myotis, Miotis bordado
  Myotis velifer (J. A. Allen, 1890) -- valid -- cave myotis, Cave Myotis, Miotis mexicano
  Myotis volans (H. Allen, 1866) -- valid -- long-legged myotis, Long-legged Myotis, Miotis pata larga
  Myotis yumanensis (H. Allen, 1864) -- valid -- Miotis de Yuma, Yuma Myotis, Yuma myotis
  Myrmotherula schisticolor (Lawrence, 1865) -- valid -- Hormiguero apizarrado, Slaty Antwren
  Nannus troglodytes (Linnaeus, 1758) -- invalid -- Chivirín chochín, troglodyte mignon, Winter Wren
  Nasua narica (Linnaeus, 1766) -- valid -- Coatí norteño, White-nosed Coati
  Neotoma albigula Hartley, 1894 -- valid -- Rata-cambalachera garganta blanca, White-throated Woodrat
  Neotoma devia Goldman, 1927 -- valid -- Arizona Woodrat, Rata-cambalachera de Coronado
  Neotoma fuscipes Baird, 1857 -- valid -- Dusky-footed Woodrat, Rata-cambalachera patas oscuras
  Neotoma lepida Thomas, 1893 -- valid -- Desert Woodrat, Rata-cambalachera desértica
  Neotoma mexicana Baird, 1855 -- valid -- Mexican Woodrat, Rata-cambalachera mexicana
  Neotoma micropus Baird, 1855 -- valid -- Rata-cambalachera de pradera, Southern Plains Woodrat
  Nerodia erythrogaster (Forster in Bossu, 1771) -- valid -- Culebra-de agua vientre claro, Plain-bellied Water Snake
  Nerodia melanogaster (Peters, 1864) -- invalid -- Culebra-de agua vientre negro
  Nerodia rhombifer (Hallowell, 1852) -- valid -- Culebra-de agua de diamantes, Diamondback Water Snake
  Nerodia rufipunctatus (Cope, 1875) -- invalid -- Culebra-de agua cabeza angosta
  Ninia diademata Baird and Girard, 1853 -- valid -- Culebra-de cafetal de collar
  Ninia sebae (Duméril, Bibron and Duméril, 1854) -- valid -- Culebra-de cafetal espalda roja
  Noctilio leporinus (Linnaeus, 1758) -- valid -- greater bulldog bat, Greater Bulldog Bat, Murciélago-pescador mayor
  Notharchus macrorhynchos (Gmelin, 1788) -- valid -- Buco de collar, White-necked Puffbird
  Notiochelidon pileata (Gould, 1858) -- valid -- Black-capped Swallow, Golondrina gorra negra
  Notiosorex crawfordi (Coues, 1877) -- valid -- Crawford's Gray Shrew, Desert Shrew, gray shrew, Musaraña-desértica norteña
  Notophthalmus meridionalis (Cope, 1880) -- valid -- Black-spotted Newt, Tritón manchas negras
  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 -- Cascanueces americano, Clark's Nutcracker
  Numenius americanus Bechstein, 1812 -- valid -- Courlis à long bec, Long-billed Curlew, Zarapito pico largo
  Numenius borealis (J. R. Forster, 1772) -- valid -- Courlis esquimau, Eskimo Curlew, Zarapito boreal
  Numenius phaeopus (Linnaeus, 1758) -- valid -- Courlis corlieu, Whimbrel, Zarapito trinador
  Nyctanassa violacea (Linnaeus, 1758) -- valid -- Bihoreau violacé, Pedrete corona clara, Yellow-crowned Night Heron, Yellow-crowned Night-Heron
  Nyctanolis pernix Elias and Wake, 1983 -- valid -- Salamandra-patas largas ágil
  Nyctibius grandis (Gmelin, 1789) -- valid -- Bienparado mayor, Great Potoo
  Nyctibius griseus (Gmelin, 1789) -- valid -- Bienparado norteño, Common Potoo
  Nycticeius humeralis (Rafinesque, 1818) -- valid -- evening bat, Evening Bat, Murciélago-crepuscular americano
  Nycticorax nycticorax (Linnaeus, 1758) -- valid -- Bihoreau gris, Black-crowned Night Heron, Black-crowned Night-Heron, Pedrete corona negra
  Nyctidromus albicollis (Gmelin, 1789) -- valid -- Chotacabras pauraque, Common Pauraque, Pauraque
  Nyctinomops femorosaccus (Merriam, 1889) -- valid -- Murciélago-cola suelta de bolsa, Pocketed Free-tailed Bat, pocketed free-tailed bat
  Nyctinomops macrotis (Gray, 1840) -- valid -- big free-tailed bat, Big Free-tailed Bat, Murciélago-cola suelta mayor
  Nyctiphrynus mcleodii (Brewster, 1888) -- valid -- Eared Poorwill, Tapacamino prío
  Nyctiphrynus yucatanicus (Hartert, 1892) -- valid -- Tapacamino yucateco, Yucatan Poorwill
  Oceanites oceanicus (Kuhl, 1820) -- valid -- Océanite de Wilson, Paíño de Wilson, Wilson's Storm Petrel, Wilson's Storm-Petrel
  Oceanodroma castro (Harcourt, 1851) -- valid -- Band-rumped Storm Petrel, Band-rumped Storm-Petrel, Océanite de Castro, Paíño de Harcourt
  Oceanodroma homochroa (Coues, 1864) -- valid -- Ashy Storm Petrel, Ashy Storm-Petrel, Océanite cendré, Paíño cenizo
  Oceanodroma leucorhoa (Vieillot, 1818) -- valid -- Leach's Storm Petrel, Leach's Storm-Petrel, Océanite cul-blanc, Paíño de Leach
  Oceanodroma macrodactyla W. E. Bryant, 1887 -- valid -- Guadalupe Storm-Petrel, Océanite de Guadalupe, Paíño de Guadalupe
  Oceanodroma melania (Bonaparte, 1854) -- valid -- Black Storm Petrel, Black Storm-Petrel, Océanite noir, Paíño negro
  Oceanodroma microsoma (Coues, 1864) -- valid -- Least Storm Petrel, Least Storm-Petrel, Océanite minute, Paíño mínimo
  Oceanodroma tethys (Bonaparte, 1852) -- valid -- Océanite téthys, Paíño de Galápagos, Wedge-rumped Storm Petrel, Wedge-rumped Storm-Petrel
  Odocoileus hemionus (Rafinesque, 1817) -- valid -- mule deer, Mule Deer, Venado bura
  Odocoileus virginianus (Zimmermann, 1780) -- valid -- cerf de Virginie, Venado cola blanca, white-tailed deer, White-tailed Deer
  Odontophorus guttatus (Gould, 1838) -- valid -- Codorniz bolonchaco, Spotted Wood Quail, 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 -- Mosquero pico curvo, Northern Bentbill
  Onychomys arenicola Mearns, 1896 -- valid -- Chihuahuan Grasshopper Mouse, Mearns' Grasshopper Mouse, Mearns's Grasshopper Mouse, Ratón-saltamontes arenero
  Onychomys leucogaster (Wied-Neuwied, 1841) -- valid -- Northern Grasshopper Mouse, Ratón-saltamontes norteño
  Onychomys torridus (Coues, 1874) -- valid -- Ratón-saltamontes sureño, Southern Grasshopper Mouse
  Onychorhynchus coronatus (Statius Muller, 1776) -- valid -- Amazonian Royal Flycatcher, Mosquero real, Royal Flycatcher
  Opheodrys aestivus (Linnaeus, 1766) -- valid -- Culebra-verde rugosa, Rough Green Snake, Rough Greensnake
  Opheodrys vernalis (Harlan, 1827) -- valid -- Culebra-verde lisa, Smooth Greensnake
  Ophisaurus ceroni Holman, 1965 -- valid -- Lagarto-de cristal de Ceron
  Ophisaurus incomptus McConkey, 1955 -- valid -- Lagarto-de cristal cuello simple
  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 -- Chipe de Tolmie, MacGillivray's Warbler
  Orcinus orca (Linnaeus, 1758) -- valid -- épaulard, Killer Whale, orca, Orca común
  Oreophasis derbianus G. R. Gray, 1844 -- valid -- Horned Guan, Pavón
  Oreortyx pictus (Douglas, 1829) -- valid -- Codorniz de montaña, Mountain Quail
  Oreoscoptes montanus (J. K. Townsend, 1837) -- valid -- Cuitlacoche de chías, Sage Thrasher
  Oriturus superciliosus (Swainson, 1838) -- valid -- Striped Sparrow, Zacatonero rayado
  Ornithion semiflavum (P. L. Sclater & Salvin, 1860) -- valid -- Mosquero ceja blanca, Yellow-bellied Tyrannulet
  Ortalis leucogastra (Gould, 1843) -- valid -- Chachalaca vientre blanco, White-bellied Chachalaca
  Ortalis poliocephala (Wagler, 1830) -- valid -- Chachalaca pálida, West Mexican Chachalaca
  Ortalis vetula (Wagler, 1830) -- valid -- Chachalaca vetula, Plain Chachalaca
  Ortalis wagleri G. R. Gray, 1867 -- valid -- Chachalaca vientre castaño, Rufous-bellied Chachalaca
  Oryzomys couesi (Alston, 1877) -- valid -- Coues' Oryzomys, Coues' Rice Rat, Coues's Rice Rat, Rata-arrocera de Coues
  Oryzomys palustris (Harlan, 1837) -- valid -- Marsh Oryzomys, Marsh Rice Rat, Rata-arrocera de pantano
  Otus asio (Linnaeus, 1758) -- invalid -- Eastern Screech-Owl, petit-duc maculé, Tecolote oriental
  Otus barbarus (P. L. Sclater & Salvin, 1868) -- invalid -- Tecolote barbudo
  Otus flammeolus (Kaup, 1852) -- valid -- Flammulated Owl, Tecolote ojo oscuro
  Otus kennicottii (Elliot, 1867) -- invalid -- Tecolote occidental, Western Screech-Owl
  Otus trichopsis (Wagler, 1832) -- invalid -- Tecolote rítmico, Whiskered Screech-Owl
  Ovis canadensis Shaw, 1804 -- valid -- bighorn sheep, Bighorn Sheep, Borrego cimarrón
  Oxybelis aeneus (Wagler, 1824) -- valid -- Brown Vine Snake, Brown Vinesnake, Culebra-bejuquilla mexicana
  Oxybelis fulgidus (Daudin, 1803) -- valid -- Culebra-bejuquilla verde
  Oxyrhopus petola (Linnaeus, 1758) -- valid -- Calico Snake, Culebra-encendida de Cálico
  Oxyura dominica (Linnaeus, 1766) -- invalid -- Masked Duck, Pato enmascarado
  Oxyura jamaicensis (Gmelin, 1789) -- valid -- érismature rousse, Pato tepalcate, Ruddy Duck
  Pachymedusa dacnicolor (Cope, 1864) -- valid -- Rana-de árbol mexicana
  Pachyramphus aglaiae (Lafresnaye, 1839) -- valid -- Mosquero-cabezón degollado, Rose-throated Becard
  Pachyramphus cinnamomeus Lawrence, 1861 -- valid -- Cinnamon Becard
  Pachyramphus major (Cabanis, 1847) -- valid -- Gray-collared Becard, Grey-collared Becard, Mosquero-cabezón mexicano
  Pachyramphus polychopterus (Vieillot, 1818) -- valid -- White-winged Becard
  Pandion haliaetus (Linnaeus, 1758) -- valid -- Balbuzard pêcheur, Gavilán pescador, Osprey, Western Osprey
  Panthera onca (Linnaeus, 1758) -- valid -- Jaguar, Jaguar
  Panyptila cayennensis (Gmelin, 1789) -- valid -- Lesser Swallow-tailed Swift, Vencejo-tijereta menor
  Panyptila sanctihieronymi Salvin, 1863 -- valid -- Great Swallow-tailed Swift, Vencejo-tijereta mayor
  Parabuteo unicinctus (Temminck, 1824) -- valid -- Aguililla rojinegra, Buse de Harris, Harris' Hawk, Harris's Hawk
  Pardirallus maculatus (Boddaert, 1783) -- valid -- Rascón pinto, Spotted Rail
  Parula americana (Linnaeus, 1758) -- invalid -- Northern Parula, Parula norteña, paruline à collier
  Parula pitiayumi (Vieillot, 1817) -- invalid -- Parula tropical, Tropical Parula
  Parula superciliosa (Hartlaub, 1844) -- invalid -- Crescent-chested Warbler, Parula ceja blanca
  Parus bicolor Linnaeus, 1766 -- invalid -- Carbonero cresta negra, Tufted Titmouse
  Parus gambeli Ridgway, 1886 -- invalid -- Carbonero ceja blanca, Mountain Chickadee
  Parus inornatus Gambel, 1845 -- invalid -- Carbonero sencillo, Plain Titmouse
  Parus sclateri O. Kleinschmidt, 1897 -- invalid -- Carbonero mexicano, Mexican Chickadee
  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 -- bruant des prés, Gorrión sabanero, Savannah Sparrow
  Passerella iliaca (Merrem, 1786) -- valid -- bruant fauve, Fox Sparrow, Gorrión rascador, Red Fox Sparrow
  Passerina amoena (Say, 1822) -- valid -- Colorín lázuli, Lazuli Bunting
  Passerina ciris (Linnaeus, 1758) -- valid -- Colorín sietecolores, Painted Bunting
  Passerina cyanea (Linnaeus, 1766) -- valid -- Colorín azul, Indigo Bunting, passerin indigo
  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 -- Colorín morado, Varied Bunting
  Pelamis platurus (Linnaeus, 1766) -- invalid -- Serpiente-marina pelágica, Yellow-bellied Sea Snake, Yellow-bellied Seasnake
  Pelecanus erythrorhynchos Gmelin, 1789 -- valid -- American White Pelican, Pélican d'Amérique, Pelícano blanco
  Pelecanus occidentalis Linnaeus, 1766 -- valid -- Brown Pelican, Pélican brun, Pelícano pardo
  Penelope purpurascens Wagler, 1830 -- valid -- Crested Guan, Pava cojolita
  Penelopina nigra (Fraser, 1852) -- valid -- Highland Guan, Pajuil
  Peponocephala electra (Gray, 1846) -- valid -- Calderón, Melon-headed Whale
  Perognathus amplus Osgood, 1900 -- valid -- Arizona Pocket Mouse, Ratón-de abazones de Arizona
  Perognathus flavescens Merriam, 1889 -- valid -- Plains Pocket Mouse, Ratón-de abazones de pradera
  Perognathus flavus Baird, 1855 -- valid -- Ratón-de abazones sedoso, Silky Pocket Mouse
  Perognathus longimembris (Coues, 1875) -- valid -- Little Pocket Mouse, Ratón-de abazones menor
  Perognathus merriami J. A. Allen, 1892 -- valid -- Merriam's Pocket Mouse, Ratón-de abazones de Merriam
  Peromyscus boylii (Baird, 1855) -- valid -- Brush Deermouse, Brush Mouse, Ratón arbustero
  Peromyscus californicus (Gambel, 1848) -- valid -- California Deermouse, California Mouse, Ratón californiano
  Peromyscus crinitus (Merriam, 1891) -- valid -- Canyon Deermouse, Canyon Mouse, Ratón de cañada
  Peromyscus difficilis (J. A. Allen, 1891) -- valid -- Ratón de roca, Rock Mouse, Southern Rock Deermouse, Zacatecan Deer Mouse
  Peromyscus eremicus (Baird, 1857) -- valid -- Cactus Deermouse, Cactus Mouse, Ratón de cactus
  Peromyscus gratus Merriam, 1898 -- valid -- Merriam's Piñon Mouse, Osgood's Mouse, Ratón de Tlalpan, Saxicoline Deermouse
  Peromyscus maniculatus (Wagner, 1845) -- valid -- Deer Mouse, North American Deermouse, Ratón norteamericano, souris sylvestre
  Peromyscus melanotis J. A. Allen and Chapman, 1897 -- valid -- Black-eared Deermouse, Black-eared Mouse, Ratón orejas negras
  Peromyscus merriami Mearns, 1896 -- valid -- Merriam's Deermouse, Merriam's Mouse, Mesquite Mouse, Ratón de Merriam
  Peromyscus nasutus (J. A. Allen, 1891) -- valid -- Northern Rock Deermouse, Northern Rock Mouse, Ratón de Nuevo Mexico, Rock Mouse
  Peromyscus pectoralis Osgood, 1904 -- valid -- Ratón tobillo blanco, White-ankled Deermouse, White-ankled Mouse
  Peromyscus truei (Shufeldt, 1885) -- valid -- Piñon Deermouse, piñon mouse, Pinyon Mouse, Ratón piñonero
  Petrosaurus mearnsi (Stejneger, 1894) -- valid -- Banded Rock Lizard, Lagartija-de piedra rayada
  Petrosaurus thalassinus (Cope, 1863) -- valid -- Baja California Rock Lizard, Lagartija-de piedra bajacaliforniana
  Peucedramus taeniatus (Du Bus de Gisignies, 1847) -- valid -- Ocotero enmascarado, Olive Warbler
  Phaeochroa cuvierii (Delattre & Bourcier, 1846) -- valid -- Fandanguero pecho escamoso
  Phaethon aethereus Linnaeus, 1758 -- valid -- Phaéton à bec rouge, Rabijunco pico rojo, Red-billed Tropicbird
  Phaethon lepturus Daudin, 1802 -- valid -- Phaéton à bec jaune, Rabijunco cola blanca, White-tailed Tropicbird
  Phaethon rubricauda Boddaert, 1783 -- valid -- Phaéton à brins rouges, Rabijunco cola roja, Red-tailed Tropicbird
  Phaethornis longuemareus (Lesson, 1832) -- valid -- Ermitaño enano, Little Hermit
  Phaethornis superciliosus (Linnaeus, 1766) -- valid -- Eastern Long-tailed Hermit, Ermitaño cola larga, Long-tailed Hermit
  Phainopepla nitens (Swainson, 1838) -- valid -- Capulinero negro, Phainopepla
  Phalacrocorax auritus (Lesson, 1831) -- valid -- Cormoran à aigrettes, Cormorán orejudo, Double-crested Cormorant
  Phalacrocorax brasilianus (Gmelin, 1789) -- valid -- Cormorán oliváceo, Cormoran vigua, Neotropic Cormorant
  Phalacrocorax pelagicus Pallas, 1811 -- valid -- Cormorán pelágico, Cormoran pélagique, Pelagic Cormorant
  Phalacrocorax penicillatus (Brandt, 1837) -- valid -- Brandt's Cormorant, Cormoran de Brandt, Cormorán de Brandt
  Phalaenoptilus nuttallii (Audubon, 1844) -- valid -- Common Poorwill, Tapacamino tevíi
  Phalaropus fulicaria (Linnaeus, 1758) -- invalid -- Falaropo pico grueso, phalarope à bec large, Red Phalarope
  Phalaropus lobatus (Linnaeus, 1758) -- valid -- Falaropo cuello rojo, Phalarope à bec étroit, Red-necked Phalarope
  Phalaropus tricolor (Vieillot, 1819) -- valid -- Falaropo pico largo, Phalarope de Wilson, Wilson's Phalarope
  Pharomachrus mocinno De la Llave, 1832 -- valid -- Quetzal mesoamericano, Resplendent Quetzal
  Phasianus colchicus Linnaeus, 1758 -- valid -- Common Pheasant, faisan de chasse, Faisán de collar, Ring-necked Pheasant
  Pheucticus chrysopeplus (Vigors, 1832) -- valid -- Mexican Yellow Grosbeak, Picogordo amarillo, Yellow Grosbeak
  Pheucticus ludovicianus (Linnaeus, 1766) -- valid -- cardinal à poitrine rose, Picogordo pecho rosa, Rose-breasted Grosbeak
  Pheucticus melanocephalus (Swainson, 1827) -- valid -- Black-headed Grosbeak, Picogordo tigrillo
  Pheugopedius felix (P. L. Sclater, 1860) -- valid -- Chivirín feliz, Happy Wren
  Pheugopedius maculipectus (Lafresnaye, 1845) -- valid -- Chivirín moteado, Spot-breasted Wren
  Philander opossum (Linnaeus, 1758) -- valid -- Gray Four-eyed Opossum, Tlacuache-cuatrojos gris
  Philortyx fasciatus (Gould, 1844) -- valid -- Banded Quail, Codorniz rayada
  Phoca vitulina Linnaeus, 1758 -- valid -- Foca común, Harbor Seal, phoque commun
  Phocoena sinus Norris and McFarland, 1958 -- valid -- cochito, Gulf of California harbor porpoise, Marsopa vaquita, Vaquita
  Phocoenoides dalli (True, 1885) -- valid -- Dall's Porpoise, Marsopa de Dall, True's Porpoise
  Phoenicopterus ruber Linnaeus, 1758 -- valid -- American Flamingo, Flamant des Caraïbes, flamant rose, Flamenco americano, Greater Flamingo
  Phrynohyas venulosa (Laurenti, 1768) -- invalid -- Rana-de árbol lechosa, Veined Frog
  Phrynosoma asio Cope, 1864 -- valid -- Giant Horned Lizard, Lagartija-cornuda gigante
  Phrynosoma braconnieri A. M. C. Duméril and Bocourt, 1870 -- valid -- Lagartija-cornuda cola corta, Short-tail Horned Lizard
  Phrynosoma cerroense Stejneger, 1893 -- valid -- Cedros Island Horned Lizard, Lagartija-cornuda de Isla Cedros
  Phrynosoma cornutum (Harlan, 1825) -- valid -- Lagartija-cornuda texana, Texas Horned Lizard
  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-tail Horned Lizard, Flat-tailed Horned Lizard, Lagartija-cornuda cola plana
  Phrynosoma modestum Girard in Baird and Girard, 1852 -- valid -- Lagartija-cornuda cola redonda, Round-tailed Horned Lizard, 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 -- Lagartija-cornuda real, Regal Horned Lizard
  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 -- Peninsula Leaf-toed Gecko, Peninsular 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 -- Culebra-nariz lanceolada ensillada, Saddled Leaf-nosed Snake
  Phyllorhynchus decurtatus (Cope, 1868) -- valid -- Culebra-nariz lanceolada pinta, Spotted Leaf-nosed Snake
  Physalaemus pustulosus (Cope, 1864) -- invalid -- Guayaquil Dwarf Frog, Rana tungara
  Piaya cayana (Linnaeus, 1766) -- valid -- Cuclillo canela, Squirrel Cuckoo
  Picoides nuttallii (Gambel, 1843) -- valid -- Carpintero californiano, Nuttall's Woodpecker
  Picoides pubescens (Linnaeus, 1766) -- valid -- Carpintero velloso-menor, Downy Woodpecker, pic mineur
  Picoides scalaris (Wagler, 1829) -- valid -- Carpintero mexicano, Ladder-backed Woodpecker
  Picoides stricklandi (Malherbe, 1845) -- valid -- Carpintero de Strickland, Strickland's Woodpecker
  Picoides villosus (Linnaeus, 1766) -- valid -- Carpintero velloso-mayor, Hairy Woodpecker, pic chevelu
  Piculus auricularis (Salvin & Godman, 1889) -- valid -- Carpintero corona gris, Gray-crowned Woodpecker, Grey-crowned Woodpecker
  Piculus rubiginosus (Swainson, 1820) -- valid -- Carpintero oliváceo, Golden-olive Woodpecker
  Pionopsitta haematotis (P. L. Sclater & Salvin, 1860) -- valid -- Brown-hooded Parrot, Loro cabeza oscura
  Pionus senilis (Spix, 1824) -- valid -- Loro corona blanca, White-crowned Parrot
  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 -- Green-tailed Towhee, tohi à queue verte, Toquí cola verde
  Pipilo crissalis (Vigors, 1839) -- invalid -- California Towhee, Toquí californiano
  Pipilo erythrophthalmus (Linnaeus, 1758) -- valid -- Eastern Towhee, Rufous-sided Towhee, tohi à flancs roux, Toquí pinto
  Pipilo fuscus Swainson, 1827 -- invalid -- Brown Towhee, Canyon Towhee, Toquí pardo
  Pipilo ocai (Lawrence, 1865) -- valid -- Collared Towhee, Toquí de collar
  Pipistrellus hesperus (H. Allen, 1864) -- invalid -- Pipistrelo del oeste americano, Western Pipistrelle
  Pipistrellus subflavus (F. Cuvier, 1832) -- invalid -- Eastern Pipistrelle, pipistrelle de l'est, Pipistrelo del este americano
  Pipra mentalis P. L. Sclater, 1857 -- valid -- Manaquín cabeza roja, Red-capped Manakin
  Piranga bidentata Swainson, 1827 -- valid -- Flame-colored Tanager, Tángara dorso rayado
  Piranga erythrocephala (Swainson, 1827) -- valid -- Red-headed Tanager, Tángara cabeza roja
  Piranga flava (Vieillot, 1822) -- valid -- Hepatic Tanager, Red Tanager, Tángara encinera
  Piranga leucoptera Trudeau, 1840 -- valid -- Tángara ala blanca, White-winged Tanager
  Piranga ludoviciana (A. Wilson, 1811) -- valid -- tangara à tête rouge, Tángara capucha roja, Western Tanager
  Piranga olivacea (J. F. Gmelin, 1789) -- valid -- Scarlet Tanager, tangara écarlate, Tángara escarlata
  Piranga roseogularis S. Cabot, 1846 -- valid -- Rose-throated Tanager, Tángara yucateca
  Piranga rubra (Linnaeus, 1758) -- valid -- Summer Tanager, Tángara roja, tangara vermillon
  Pitangus sulphuratus (Linnaeus, 1766) -- valid -- Great Kiskadee, Luis bienteveo
  Pituophis deppei (Duméril, 1853) -- valid -- Culebra-sorda mexicana
  Pituophis lineaticollis (Cope, 1861) -- valid -- Culebra-sorda centroamericana
  Pituophis melanoleucus (Daudin, 1803) -- valid -- Culebra-sorda toro, Pine Snake, Pinesnake
  Platyrinchus cancrominus P. L. Sclater & Salvin, 1860 -- valid -- Mosquero pico chato, Stub-tailed Spadebill
  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 à face blanche, Ibis cara blanca, White-faced Ibis
  Plegadis falcinellus (Linnaeus, 1766) -- valid -- Glossy Ibis, Ibis cara oscura, Ibis falcinelle
  Pliocercus andrewsi Smith, 1942 -- invalid -- Culebra-imita coral de Andrew
  Pliocercus bicolor Smith, 1941 -- invalid -- Culebra-imita coral bicolor
  Pliocercus elapoides Cope, 1860 -- invalid -- Culebra-imita coral común
  Pluvialis dominica (Statius Muller, 1776) -- valid -- American Golden Plover, American Golden-Plover, Chorlo dominico, Lesser Golden-Plover, Pluvier bronzé, pluvier doré d'Amérique
  Pluvialis fulva (Gmelin, 1789) -- valid -- Chorlo fulvo, Pacific Golden Plover, Pacific Golden-Plover, Pluvier fauve
  Pluvialis squatarola (Linnaeus, 1758) -- valid -- Black-bellied Plover, Chorlo gris, Grey Plover, Pluvier argenté
  Podiceps auritus (Linnaeus, 1758) -- valid -- Grèbe esclavon, Horned Grebe, Zambullidor cornudo
  Podiceps nigricollis C. L. Brehm, 1831 -- valid -- Black-necked Grebe, Eared Grebe, Grèbe à cou noir, Zambullidor orejudo
  Podilymbus podiceps (Linnaeus, 1758) -- valid -- Grèbe à bec bigarré, Pied-billed Grebe, Zambullidor pico grueso
  Polioptila albiloris P. L. Sclater & Salvin, 1860 -- valid -- Perlita pispirria, White-lored Gnatcatcher
  Polioptila caerulea (Linnaeus, 1766) -- valid -- Blue-gray Gnatcatcher, Blue-grey Gnatcatcher, gobemoucherons gris-bleu, Perlita azulgris
  Polioptila californica Brewster, 1881 -- valid -- California Gnatcatcher, Perlita californiana
  Polioptila melanura Lawrence, 1857 -- valid -- Black-tailed Gnatcatcher, Perlita del desierto
  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 -- bruant vespéral, Gorrión cola blanca, Vesper Sparrow
  Porphyrula martinica (Linnaeus, 1766) -- invalid -- Gallineta morada, Purple Gallinule, talève violacée
  Porthidium dunni (Hartweg and Oliver, 1938) -- valid -- Dunn's Hognose Viper, Nauyaca-nariz de cerdo oxaqueña
  Porthidium hespere (Campbell, 1976) -- valid -- Nauyaca-nariz de cerdo de Tecomán, Western Hognose Viper
  Porthidium nasutum (Bocourt, 1868) -- valid -- Hognosed Pit Viper, Nauyaca-nariz de cerdo narigona
  Porthidium yucatanicum (H. M. Smith, 1941) -- valid -- Nauyaca-nariz de cerdo yucateca
  Porzana carolina (Linnaeus, 1758) -- valid -- marouette de Caroline, Polluela sora, Sora
  Porzana flaviventer (Boddaert, 1783) -- valid -- Polluela pecho amarillo, Yellow-breasted Crake
  Procellaria parkinsoni G. R. Gray, 1862 -- valid -- Black Petrel, Parkinson's Petrel, Petrel de Parkinson, Puffin de Parkinson
  Procyon lotor (Linnaeus, 1758) -- valid -- common raccoon, Mapache común, northern raccoon, Raccoon, raton laveur
  Progne chalybea (Gmelin, 1789) -- valid -- Golondrina acerada, Gray-breasted Martin, Grey-breasted Martin
  Progne sinaloae Nelson, 1898 -- valid -- Golondrina sinaloense, Sinaloa Martin
  Progne subis (Linnaeus, 1758) -- valid -- Golondrina azulnegra, hirondelle noire, Purple Martin
  Protonotaria citrea (Boddaert, 1783) -- valid -- Chipe dorado, Paruline orangée, Prothonotary Warbler
  Psaltriparus minimus (J. K. Townsend, 1837) -- valid -- American Bushtit, Bushtit, Sastrecillo
  Psarocolius wagleri (G. R. Gray, 1845) -- valid -- Chestnut-headed Oropendola, Oropéndola cabeza castaña
  Pseudacris cadaverina (Cope, 1866) -- valid -- California Chorus Frog, California Treefrog, Rana-de coro californiana
  Pseudacris regilla (Baird and Girard, 1852) -- valid -- Northern Pacific Treefrog, Pacific Chorus Frog, Pacific Treefrog, Rana-de coro del pacífico
  Pseudemys gorzugi Ward, 1984 -- valid -- Rio Grande Cooter, Tortuga del Río Bravo
  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) -- valid -- 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) -- valid -- 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 -- valid -- Tlaconete enano
  Pseudoeurycea praecellens (Rabb, 1955) -- valid -- 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 -- valid -- 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
  Pseudoleptodeira latifasciata (Günther, 1894) -- valid -- Culebra-ojo de gato-falsa cabeza roja
  Pseudorca crassidens (Owen, 1846) -- valid -- False Killer Whale, Orca-falsa
  Pseustes poecilonotus (Günther, 1858) -- valid -- 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 -- Cook's Petrel, Petrel de Cook, Pétrel de Cook
  Pterodroma externa (Salvin, 1875) -- valid -- Juan Fernandez Petrel, Petrel de Juan Fernández, Pétrel de Juan Fernandez
  Pterodroma neglecta (Schlegel, 1863) -- valid -- Kermadec Petrel, Petrel de Kermadec, Pétrel des Kermadec
  Pterodroma nigripennis (Rothschild, 1893) -- valid -- Black-winged Petrel, Pétrel à ailes noires, Petrel ala negra
  Pterodroma phaeopygia (Salvin, 1876) -- valid -- Galapagos Petrel, Petrel de Galápagos, Pétrel des Galapagos
  Pterodroma rostrata (Peale, 1848) -- invalid -- Petrel de Tahití, Pétrel de Tahiti, Tahiti Petrel
  Pteroglossus torquatus (Gmelin, 1788) -- valid -- Arasari de collar, Collared Aracari
  Pteronotus parnellii (Gray, 1843) -- valid -- Common Mustached Bat, Murciélago-bigotudo de Parnell, Parnell's moustached bat, Parnell's mustached bat
  Ptychohyla erythromma (Taylor, 1937) -- valid -- 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 -- Alcuela oscura, Cassin's Auklet, Starique de Cassin
  Puffinus auricularis C. H. Townsend, 1890 -- valid -- 'A'o, Manx, Newell's Townsend's Shearwater, Pardela de Revillagigedo, Puffin de Townsend, Townsend's Shearwater
  Puffinus bulleri Salvin, 1888 -- valid -- Buller's Shearwater, Pardela de Buller, Puffin de Buller
  Puffinus carneipes Gould, 1844 -- valid -- Flesh-footed Shearwater, Pardela pata pálida, 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 -- Great Shearwater, Greater Shearwater, Pardela mayor, Puffin majeur
  Puffinus griseus (Gmelin, 1789) -- valid -- Pardela gris, Puffin fuligineux, Sooty Shearwater
  Puffinus lherminieri Lesson, 1839 -- valid -- Audubon's Shearwater, Pardela de Audubon, Puffin d'Audubon
  Puffinus nativitatis Streets, 1877 -- valid -- Christmas Shearwater, Pardela de Navidad, Puffin de la Nativité
  Puffinus opisthomelas Coues, 1864 -- valid -- Black-vented Shearwater, Pardela mexicana, Puffin cul-noir
  Puffinus pacificus (Gmelin, 1789) -- valid -- Pardela cola cuña, Puffin fouquet, Wedge-tailed Shearwater
  Puffinus tenuirostris (Temminck, 1836) -- valid -- Pardela cola corta, Puffin à bec grêle, Short-tailed Shearwater
  Pulsatrix perspicillata (Latham, 1790) -- valid -- Búho de anteojos, Spectacled Owl
  Puma concolor (Linnaeus, 1771) -- valid -- Cougar, mountain lion, Puma, Puma
  Pyrocephalus rubinus (Boddaert, 1783) -- valid -- Mosquero cardenal, Vermilion Flycatcher
  Quiscalus mexicanus (Gmelin, 1788) -- valid -- Great-tailed Grackle, Zanate mexicano
  Quiscalus palustris (Swainson, 1827) -- valid -- Slender-billed Grackle, Zanate de Lerma
  Rallus elegans Audubon, 1834 -- valid -- King Rail, râle élégant, Rascón real
  Rallus limicola Vieillot, 1819 -- valid -- râle de Virginie, Rascón limícola, Virginia Rail
  Rallus longirostris Boddaert, 1783 -- valid -- Clapper Rail, Rascón picudo
  Ramphastos sulfuratus Lesson, 1830 -- valid -- Keel-billed Toucan, Tucán pico canoa
  Ramphocaenus melanurus Vieillot, 1819 -- valid -- Long-billed Gnatwren, Soterillo picudo
  Ramphocelus passerinii Bonaparte, 1831 -- valid -- Passerini's Tanager, Tángara terciopelo
  Ramphocelus sanguinolentus (Lesson, 1831) -- valid -- Crimson-collared Tanager
  Rana aurora Baird and Girard, 1852 -- valid -- Northern Red-legged Frog, Rana pata roja, Red-legged Frog
  Rana berlandieri Baird, 1859 -- invalid -- Rana del Río Grande, Rio Grande Frog, Rio Grande Leopard Frog
  Rana boylii Baird, 1854 -- valid -- Foothill Yellow-legged Frog, Rana pata amarilla
  Rana catesbeiana Shaw, 1802 -- invalid -- American Bullfrog, Bullfrog, ouaouaron, Rana toro
  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 -- Rana tarahumara, Tarahumara Frog
  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 -- Lowland Leopard Frog, Rana de Yavapai, Yavapai Frog, Yavapai Leopard Frog
  Rana zweifeli Hillis, Frost and Webb, 1984 -- invalid -- Rana de Zweifel
  Recurvirostra americana Gmelin, 1789 -- valid -- American Avocet, Avoceta americana, Avocette d'Amérique
  Regulus calendula (Linnaeus, 1766) -- valid -- Reyezuelo de rojo, roitelet à couronne rubis, Ruby-crowned Kinglet
  Regulus satrapa Lichtenstein, 1823 -- valid -- Golden-crowned Kinglet, Reyezuelo de oro, roitelet à couronne dorée
  Reithrodontomys fulvescens J. A. Allen, 1894 -- valid -- Fulvous Harvest Mouse, Ratón-cosechero leonado
  Reithrodontomys megalotis (Baird, 1857) -- valid -- Ratón-cosechero común, Western Harvest Mouse
  Reithrodontomys montanus (Baird, 1855) -- valid -- Plains Harvest Mouse, Ratón-cosechero de pradera
  Rhadinaea bogertorum Myers, 1974 -- valid -- Culebra-café oaxaqueña
  Rhadinaea cuneata Myers, 1974 -- valid -- Culebra-café veracruzana
  Rhadinaea decorata (Günther, 1858) -- valid -- Culebra-café adornada
  Rhadinaea forbesi H. M. Smith, 1942 -- valid -- Culebra-café de Forbes
  Rhadinaea fulvivittis Cope, 1875 -- valid -- Culebra-café listada
  Rhadinaea gaigeae Bailey, 1937 -- valid -- Culebra-café de Gaige
  Rhadinaea godmani (Günther, 1865) -- valid -- Culebra-café de Godman
  Rhadinaea hannsteini (Stuart, 1949) -- valid -- Culebra-café labios manchados
  Rhadinaea hempsteadae Stuart and Bailey, 1941 -- valid -- Culebra-café de Hempstead
  Rhadinaea hesperia Bailey, 1940 -- valid -- Culebra-café de Occidente
  Rhadinaea lachrymans (Cope, 1870) -- valid -- Culebra-café llorona
  Rhadinaea laureata (Günther, 1868) -- valid -- Culebra-café coronada
  Rhadinaea macdougalli Smith and Langebartel, 1950 -- valid -- Culebra-café de MacDougall
  Rhadinaea marcellae Taylor, 1949 -- valid -- Culebra-café de Marcella
  Rhadinaea montana H. M. Smith, 1944 -- valid -- Culebra-café de Nuevo León
  Rhadinaea myersi Rossman, 1965 -- valid -- Culebra-café de Meyer
  Rhadinaea omiltemana (Günther, 1894) -- valid -- Culebra-café guerrerense
  Rhadinaea posadasi (Slevin, 1936) -- valid -- Culebra-café de Posada
  Rhadinaea quinquelineata Cope, 1886 -- valid -- Culebra-café poblana
  Rhadinaea schistosa (Smith, 1941) -- valid -- Culebra-café collar-incompleto
  Rhadinaea taeniata (Peters, 1863) -- valid -- Culebra-café de pino-encino
  Rhadinophanes monticola Myers and Campbell, 1981 -- valid -- Culebra de montaña
  Rhinocheilus lecontei Baird and Girard, 1853 -- valid -- Culebra narigona, Long-nosed Snake
  Rhinoclemmys areolata (Duméril and Bibron in Duméril and Duméril, 1851) -- valid -- Furrowed Wood Turtle, Tortuga-de monte mojina
  Rhinoclemmys pulcherrima (Gray, 1856) -- valid -- Painted Wood Turtle, Tortuga-de monte pintada
  Rhinoclemmys rubida (Cope, 1870) -- valid -- Mexican Spotted Wood Turtle, Tortuga-de monte payaso
  Rhinophrynus dorsalis Duméril and Bibron, 1841 -- valid -- Burrowing Toad, Mexican Burrowing Toad, Sapo-excavador mexicano
  Rhodinocichla rosea (Lesson, 1832) -- valid -- Rosy Thrush-Tanager, Tángara cuitlacoche
  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 -- Cotorra-serrana occidental, Thick-billed Parrot
  Rhynchopsitta terrisi R. T. Moore, 1947 -- valid -- Cotorra-serrana oriental, Maroon-fronted Parrot
  Rhytipterna holerythra (P. L. Sclater & Salvin, 1860) -- valid -- Plañidera alazán, Rufous Mourner
  Ridgwayia pinicola (P. L. Sclater, 1859) -- valid -- Aztec Thrush, Mirlo pinto
  Riparia riparia (Linnaeus, 1758) -- valid -- Bank Swallow, Golondrina ribereña, hirondelle de rivage, Sand Martin
  Rissa tridactyla (Linnaeus, 1758) -- valid -- Black-legged Kittiwake, Gaviota pata negra, Mouette tridactyle
  Rostrhamus sociabilis (Vieillot, 1817) -- valid -- Gavilán caracolero, Milan des marais, Snail Kite
  Rynchops niger Linnaeus, 1758 -- valid -- Bec-en-ciseaux noir, Black Skimmer, Rayador americano
  Salpinctes obsoletus (Say, 1822) -- valid -- Chivirín saltarroca, Rock Wren
  Saltator atriceps (Lesson, 1832) -- valid -- Black-headed Saltator, Picurero cabeza negra
  Saltator coerulescens Vieillot, 1817 -- valid -- Grayish Saltator, Greyish Saltator, Picurero grisáceo
  Saltator maximus (P. L. Statius Müller, 1776) -- valid -- Buff-throated Saltator, Picurero bosquero
  Salvadora bairdi Jan, 1860 -- valid -- Culebra-parchada de Baird
  Salvadora deserticola Schmidt, 1940 -- valid -- Big Bend Patch-nosed Snake, Culebra-parchada de Big Bend
  Salvadora grahamiae Baird and Girard, 1853 -- valid -- Culebra-parchada de montaña, Mountain Patch-nosed Snake
  Salvadora hexalepis (Cope, 1866) -- valid -- Culebra-parchada de cabestrillo, Western Patch-nosed Snake
  Salvadora intermedia Hartweg, 1940 -- valid -- Culebra-parchada oaxaqueña
  Salvadora lemniscata (Cope, 1890) -- valid -- Culebra-parchada del Pacífico
  Salvadora mexicana (Duméril, Bibron and Duméril, 1854) -- valid -- Culebra-parchada mexicana
  Sarcoramphus papa (Linnaeus, 1758) -- valid -- King Vulture, Sarcoramphe roi, Zopilote rey
  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, Monserrat Chuckwalla, Slevin's 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 -- Eastern Phoebe, moucherolle phébi, Papamoscas fibí
  Sayornis saya (Bonaparte, 1825) -- valid -- moucherolle à ventre roux, Papamoscas llanero, Say's Phoebe
  Scalopus aquaticus (Linnaeus, 1758) -- valid -- Eastern Mole, Topo occidental, topos
  Scapanus latimanus (Bachman, 1842) -- valid -- Broad-footed Mole, Topo pata ancha, topociego
  Scaphidura oryzivora (Gmelin, 1788) -- invalid -- Tordo gigante
  Scaphiodontophis annulatus (Duméril, Bibron and Duméril, 1854) -- valid -- Culebra-añadida guatemalteca
  Sceloporus acanthinus Bocourt, 1873 -- valid -- Bocourt's Spiny Lizard, Lagartija-escamosa de Boucourt
  Sceloporus adleri H. M. Smith and Savitzky, 1974 -- valid -- Adler's Spiny Lizard, Lagartija-escamosa de Adler
  Sceloporus aeneus Wiegmann, 1828 -- valid -- Lagartija-escamosa llanera, Southern Bunchgrass Lizard
  Sceloporus anahuacus Lara-Góngora, 1983 -- valid -- Anahuacan Bunchgrass Lizard, Lagartija-escamosa de Anáhuac
  Sceloporus angustus (Dickerson, 1919) -- valid -- Lagartija-escamosa angosta, Santa Cruz Island Sator
  Sceloporus asper Boulenger, 1897 -- valid -- Asperous Spiny Lizard, Lagartija-escamosa de Boulenger
  Sceloporus bicanthalis H. M. Smith, 1937 -- valid -- Lagartija-escamosa transvolcánica, Trans Volcanic Bunchgrass Lizard
  Sceloporus bulleri Boulenger, 1894 -- valid -- Buller's Spiny Lizard, Lagartija-escamosa de Buller
  Sceloporus carinatus H. M. Smith, 1936 -- valid -- Keeled Spiny Lizard, Lagartija-escamosa aquillada
  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 -- Cozumel Spiny Lizard, Lagartija-escamosa de Cozumel
  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 -- Gadow's Spiny Lizard, Lagartija-escamosa de Gadow
  Sceloporus goldmani H. M. Smith, 1937 -- valid -- Goldman's Bunchgrass Lizard, Lagartija-escamosa de Goldman
  Sceloporus graciosus Baird and Girard, 1852 -- valid -- Lagartija-escamosa de Artemisa, Sagebrush Lizard
  Sceloporus grammicus Wiegmann, 1828 -- valid -- Graphic Spiny Lizard, Lagartija-escamosa de mezquite, Mesquite Lizard
  Sceloporus grandaevus (Dickerson, 1919) -- valid -- Cerralvo Island Sator, Lagartija-escamosa anciana
  Sceloporus heterolepis Boulenger, 1894 -- valid -- Dorsalkeel Spiny Lizard, Lagartija-escamosa dorso aquillado, Southern Odd-scaled Lizard
  Sceloporus horridus Wiegmann, 1834 -- valid -- Horrible Spiny Lizard, Lagartija-escamosa tarasca, Rough Lizard
  Sceloporus hunsakeri Hall and H. M. Smith, 1979 -- valid -- Hunsaker's Spiny Lizard, Lagartija-escamosa de Hunsaker
  Sceloporus insignis Webb, 1967 -- valid -- Coalcoman Black-collared Lizard, Lagartija-escamosa collar negro, Michoacán Blackcollar Lizard
  Sceloporus internasalis H. M. Smith and Bumzahem, 1955 -- valid -- Lagartija-escamosa verde, Mail-snouted Spiny Lizard
  Sceloporus jalapae Günther, 1890 -- valid -- Jalapa Spiny Lizard, Lagartija-escamosa jalapeña
  Sceloporus licki Van Denburgh, 1895 -- valid -- Cape Arboreal Spiny Lizard, Lagartija-escamosa del Cabo
  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, Northern Snub-nosed Lizard, Spotted Spiny Lizard
  Sceloporus magister Hallowell, 1854 -- valid -- Desert Spiny Lizard, Lagartija-escamosa de desierto
  Sceloporus megalepidurus H. M. Smith, 1934 -- valid -- Cursorial Spiny Lizard, Dull Cursorial Spiny Lizard, Lagartija-escamosa escamas grandes, Largescale Spiny Lizard
  Sceloporus melanorhinus Bocourt, 1876 -- valid -- Black-nosed Lizard, Lagartija-escamosa hocico negro, Pastel Tree Lizard
  Sceloporus merriami Stejneger, 1904 -- valid -- Canyon Lizard, Lagartija-escamosa de cañón
  Sceloporus mucronatus Cope, 1885 -- valid -- Cleft Lizard, Lagartija-escamosa de grieta-sureña
  Sceloporus nelsoni Cochran, 1923 -- valid -- Lagartija-escamosa de Nelson, Nelson's Spiny Lizard
  Sceloporus occidentalis Baird and Girard, 1852 -- valid -- Lagartija-escamosa del occidente, Western Fence Lizard
  Sceloporus ochoterenae H. M. Smith, 1934 -- valid -- Lagartija-escamosa de Querétaro, Ochoterena's Lizard, Queretaran Spiny Lizard
  Sceloporus olivaceus H. M. Smith, 1934 -- valid -- Lagartija-escamosa de Texas, Texas Spiny Lizard
  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 -- Bluebelly Lizard, Lagartija-escamosa panza azul
  Sceloporus pyrocephalus Cope, 1864 -- valid -- Boulder Spiny Lizard, Lagartija-escamosa de pedregal, 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 -- Bocourt's Emerald Lizard, Lagartija-escamosa esmeralda-de Bocourt
  Sceloporus spinosus Wiegmann, 1828 -- valid -- Eastern Spiny Lizard, Lagartija-escamosa espinosa
  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 -- Guatemalan Emerald Spiny Lizard, Lagartija-escamosa esmeralda-de Cope
  Sceloporus tanneri H. M. Smith and Larsen, 1975 -- valid -- Lagartija-escamosa de Tanner, Tanner's Spiny Lizard
  Sceloporus torquatus Wiegmann, 1828 -- valid -- Crevice Swift, Lagartija-escamosa barrada, Torquate Lizard
  Sceloporus undulatus (Bosc and Daudin in Sonnini and Latreille, 1801) -- valid -- Eastern Fence Lizard, Fence Lizard, Lagartija-escamosa de pradera, Plateau Lizard, Prairie Lizard
  Sceloporus utiformis Cope, 1864 -- valid -- Antesator, Cope's Largescale Spiny Lizard, Lagartija-escamosa de suelo
  Sceloporus variabilis Wiegmann, 1834 -- valid -- Lagartija-escamosa panza rosada, Rose-bellied Lizard, Rosebelly Lizard
  Sceloporus virgatus H. M. Smith, 1938 -- valid -- Lagartija-escamosa rayada, Striped Plateau Lizard
  Sceloporus zosteromus Cope, 1863 -- valid -- Central Baja Spiny Lizard, Lagartija-escamosa de San Lucas
  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
  Scincella lateralis (Say in James, 1823) -- valid -- Encinela norteña, Ground Skink, Little Brown Skink
  Scincella silvicola (Taylor, 1937) -- valid -- Encinela de Taylor
  Sciurus aberti Woodhouse, 1853 -- valid -- Abert's Squirrel, Ardilla de Albert
  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 -- Ardilla de Nayarit, Mexican Fox Squirrel, Nayarit squirrel
  Sciurus niger Linnaeus, 1758 -- valid -- Ardilla zorra, Eastern Fox Squirrel, fox squirrel
  Sclerurus guatemalensis (Hartlaub, 1844) -- valid -- Hojarasquero oscuro, Scaly-throated Leaftosser
  Sclerurus mexicanus P. L. Sclater, 1857 -- valid -- Hojarasquero pecho rufo, Tawny-throated Leaftosser
  Scolopax minor Gmelin, 1789 -- valid -- American Woodcock, Bécasse d'Amérique, Chocha americana
  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 (Gmelin, 1788) -- valid -- Rufous Hummingbird, Zumbador rufo
  Selasphorus sasin (Lesson, 1829) -- valid -- Allen's Hummingbird, Zumbador de Allen
  Senticolis triaspis (Cope, 1866) -- valid -- Culebra oliva, Green Rat Snake, Green Ratsnake
  Setophaga ruticilla (Linnaeus, 1758) -- valid -- American Redstart, Chipe flameante, Paruline flamboyante
  Sialia currucoides (Bechstein, 1798) -- valid -- Azulejo pálido, merlebleu azuré, Mountain Bluebird
  Sialia mexicana Swainson, 1832 -- valid -- Azulejo garganta azul, merle-bleu de l'ouest, Western Bluebird
  Sialia sialis (Linnaeus, 1758) -- valid -- Azulejo garganta canela, Eastern Bluebird, merlebleu de l'est
  Sibon fischeri (Boulenger, 1894) -- valid -- Culebra-caracolera de Fisher
  Sibon sartorii (Cope, 1863) -- valid -- Culebra-caracolera terrestre
  Sibon zweifeli (Liner and Wilson, 1970) -- valid -- Culebra-caracolera de Zweifel
  Sicalis luteola (Sparrman, 1789) -- valid -- Gorrión-canario sabanero, Grassland Yellow Finch, Grassland Yellow-Finch
  Sigmodon arizonae Mearns, 1890 -- valid -- Arizona Cotton Rat, Rata-algodonera de Arizona
  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 -- Hispid Cotton Rat, Rata-algodonera crespa
  Sigmodon ochrognathus Bailey, 1902 -- valid -- Rata-algodonera nariz amarilla, Yellow-nosed Cotton Rat
  Siren intermedia Barnes, 1826 -- valid -- Lesser Siren, Sirena menor
  Siren lacertina Linnaeus, 1767 -- invalid -- Greater Siren, Sirena mayor
  Sistrurus catenatus (Rafinesque-Schmaltz, 1818) -- valid -- Massasauga, Víbora-cascabel pigmea-norteña
  Sistrurus ravus (Cope, 1865) -- invalid -- Víbora-cascabel pigmea-mexicana
  Sitta canadensis Linnaeus, 1766 -- valid -- Red-breasted Nuthatch, Sita canadiense, sittelle à poitrine rousse
  Sitta carolinensis Latham, 1790 -- valid -- Sita pecho blanco, sittelle à poitrine blanche, White-breasted Nuthatch
  Sitta pygmaea Vigors, 1839 -- valid -- Pygmy Nuthatch, Sita enana
  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
  Sonora michoacanensis Dugès, 1884 -- valid -- Culebra-suelera michoacana
  Sonora semiannulata Baird and Girard, 1853 -- valid -- Culebra-suelera semianillada, Ground Snake, Groundsnake
  Sorex arizonae Diersing and Hoffmeister, 1977 -- valid -- Arizona Shrew, Musaraña de Arizona
  Sorex ornatus Merriam, 1895 -- valid -- Musaraña adornada, Ornate Shrew, Suisun shrew
  Spea bombifrons (Cope, 1863) -- valid -- Plains Spadefoot, Sapo-de espuelas de las planicies
  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 -- Geco-enano ocelado, Ocellated Dwarf Gecko, Ocellated Gecko, Ocellated Gekko
  Sphaerodactylus glaucus Cope, 1865 -- valid -- Geco-enano collarejo
  Sphaerodactylus millepunctatus Hallowell, 1861 -- valid -- Geco-enano punteado
  Sphenomorphus cherriei (Cope, 1893) -- valid -- Encinela-selvática café
  Sphenomorphus incertum (Stuart, 1940) -- valid -- Encinela-selvática hojarasquera
  Sphiggurus mexicanus (Kerr, 1792) -- valid -- Mexican Hairy Dwarf Porcupine, Puercoespín mexicano
  Sphyrapicus nuchalis S. F. Baird, 1858 -- valid -- Chupasavia nuca roja, Red-naped Sapsucker
  Sphyrapicus ruber (Gmelin, 1788) -- valid -- Chupasavia cabeza roja, Red-breasted Sapsucker
  Sphyrapicus thyroideus (Cassin, 1852) -- valid -- Chupasavia oscuro, Williamson's Sapsucker
  Sphyrapicus varius (Linnaeus, 1766) -- valid -- Chupasavia maculado, pic maculé, Yellow-bellied Sapsucker
  Spilogale putorius (Linnaeus, 1758) -- valid -- Eastern Spotted Skunk, spotted skunk, Zorrillo-manchado común
  Spilotes pullatus (Linnaeus, 1758) -- valid -- Culebra-ratonera mica
  Spindalis zena (Linnaeus, 1758) -- valid -- 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, Aigle orné, Ornate Hawk-Eagle
  Spizaetus tyrannus (Wied-Neuwied, 1820) -- valid -- Águila tirana, Aigle tyran, Black Hawk-Eagle
  Spizastur melanoleucus (Vieillot, 1816) -- invalid -- Águila blanquinegra, Black-and-white Hawk-Eagle
  Spizella atrogularis (Cabanis, 1851) -- valid -- Black-chinned Sparrow, Gorrión barba negra
  Spizella breweri Cassin, 1856 -- valid -- Brewer's Sparrow, Gorrión de Brewer
  Spizella pallida (Swainson, 1832) -- valid -- bruant des plaines, Clay-colored Sparrow, Gorrión pálido
  Spizella passerina (Bechstein, 1798) -- valid -- bruant familier, Chipping Sparrow, Gorrión ceja blanca
  Spizella pusilla (A. Wilson, 1810) -- valid -- bruant des champs, Field Sparrow, Gorrión pusila
  Spizella wortheni Ridgway, 1884 -- valid -- Gorrión de Worthen, Worthen's Sparrow
  Sporophila minuta (Linnaeus, 1758) -- valid -- Ruddy-breasted Seedeater, Semillero pecho canela
  Sporophila schistacea (Lawrence, 1862) -- valid -- Semillero apizarrado, Slate-colored Seedeater
  Sporophila torqueola (Bonaparte, 1850) -- valid -- Cinnamon-rumped Seedeater, Semillero de collar, White-collared Seedeater
  Staurotypus triporcatus (Wiegmann, 1828) -- valid -- Mexican Giant Musk Turtle, Northern Giant Musk Turtle, Tortuga-almizclera tres lomos
  Stelgidopteryx serripennis (Audubon, 1838) -- valid -- Golondrina ala aserrada, hirondelle à ailes hérissées, Northern Rough-winged Swallow
  Stellula calliope (Gould, 1847) -- valid -- Calliope Hummingbird, Colibrí garganta rayada
  Stenella attenuata (Gray, 1846) -- valid -- Delfín moteado, Pantropical Spotted Dolphin
  Stenella clymene (Gray, 1850) -- valid -- Clymene Dolphin, Delfín de Clymen, short-snouted spinner dolphin
  Stenella coeruleoalba (Meyen, 1833) -- valid -- Delfín listado, Striped Dolphin
  Stenella frontalis (G. Cuvier, 1829) -- valid -- Atlantic Spotted Dolphin, Delfín embridado
  Stenella longirostris (Gray, 1828) -- valid -- Delfín tornillo, long-snouted spinner dolphin, Spinner Dolphin
  Steno bredanensis (G. Cuvier in Lesson, 1828) -- valid -- Delfín dientes rugosos, Rough-toothed Dolphin
  Stenorrhina freminvillei Duméril, Bibron and Duméril, 1854 -- valid -- Culebra-alacranera de sangre
  Stercorarius longicaudus Vieillot, 1819 -- valid -- Labbe à longue queue, Long-tailed Jaeger, Salteador cola larga
  Stercorarius parasiticus (Linnaeus, 1758) -- valid -- Labbe parasite, Parasitic Jaeger, Salteador parásito
  Stercorarius pomarinus (Temminck, 1815) -- valid -- Labbe pomarin, Pomarine Jaeger, Pomarine Skua, Salteador pomarino
  Sterna anaethetus Scopoli, 1786 -- invalid -- Bridled Tern, Charrán embridado
  Sterna antillarum (Lesson, 1847) -- invalid -- Charrán mínimo, Least Tern
  Sterna caspia Pallas, 1770 -- invalid -- Caspian Tern, Charrán caspia, sterne caspienne
  Sterna dougallii Montagu, 1813 -- valid -- Charrán rosado, Roseate Tern, Sterne de Dougall
  Sterna elegans Gambel, 1849 -- invalid -- Charrán elegante, Elegant Tern
  Sterna forsteri Nuttall, 1834 -- valid -- Charrán de Forster, Forster's Tern, Sterne de Forster
  Sterna fuscata Linnaeus, 1766 -- invalid -- Charrán sombrío, Sooty Tern
  Sterna hirundo Linnaeus, 1758 -- valid -- Charrán común, Common Tern, Sterne pierregarin
  Sterna maxima Boddaert, 1783 -- invalid -- Charrán real, Royal Tern
  Sterna nilotica Gmelin, 1789 -- invalid -- Charrán pico grueso, Gull-billed Tern
  Sterna paradisaea Pontoppidan, 1763 -- valid -- Arctic Tern, Charrán ártico, Sterne arctique
  Sterna sandvicensis Latham, 1787 -- invalid -- Charrán de Sandwich, Sandwich Tern
  Storeria dekayi (Holbrook, 1839) -- valid -- Brown Snake, couleuvre brune, Culebra-parda de Kay, Dekay's Brown Snake, DeKay's Brownsnake
  Storeria hidalgoensis Taylor, 1942 -- valid -- Culebra-parda hidalguense
  Storeria storerioides (Cope, 1865) -- valid -- Culebra-parda mexicana
  Streptoprocne semicollaris (De Saussure, 1859) -- valid -- Vencejo nuca blanca, White-naped Swift
  Streptoprocne zonaris (Shaw, 1796) -- valid -- Vencejo cuello blanco, White-collared Swift
  Strix fulvescens (P. L. Sclater & Salvin, 1868) -- valid -- Búho leonado, Fulvous Owl
  Strix occidentalis (Xantus de Vesey, 1860) -- valid -- Búho manchado, Spotted Owl
  Strix varia Barton, 1799 -- valid -- Barred Owl, Búho listado, chouette rayée
  Strix virgata (Cassin, 1849) -- invalid -- Búho café, Mottled Owl
  Sturnella magna (Linnaeus, 1758) -- valid -- Eastern Meadowlark, Pradero tortilla-con-chile, sturnelle des prés
  Sturnella neglecta Audubon, 1844 -- valid -- Pradero occidental, sturnelle de l'ouest, Western Meadowlark
  Sturnus vulgaris Linnaeus, 1758 -- valid -- Common Starling, Estornino pinto, étourneau sansonnet, European Starling
  Sula dactylatra Lesson, 1831 -- valid -- Bobo enmascarado, Fou masqué, Masked Booby
  Sula leucogaster (Boddaert, 1783) -- valid -- Bobo café, Brown Booby, Fou brun
  Sula nebouxii Milne-Edwards, 1882 -- valid -- Blue-footed Booby, Bobo pata azul, Fou à pieds bleus
  Sula sula (Linnaeus, 1766) -- valid -- Bobo pata roja, Fou à pieds rouges, Red-footed Booby
  Sylvilagus bachmani (Waterhouse, 1839) -- valid -- Brush Rabbit, Conejo matorralero
  Sylvilagus floridanus (J. A. Allen, 1890) -- valid -- Conejo serrano, Eastern Cottontail, lapin à queue blanche
  Symphimus leucostomus Cope, 1870 -- valid -- Culebra-labios blancos de Tehuantepec
  Symphimus mayae (Gaige, 1936) -- valid -- Culebra-labios blancos maya
  Sympholis lippiens Cope, 1862 -- valid -- Culebra cola corta-mexicana
  Synallaxis erythrothorax P. L. Sclater, 1855 -- valid -- Güitío pecho rufo, Rufous-breasted Spinetail
  Synthliboramphus antiquus (Gmelin, 1789) -- valid -- Ancient Murrelet, Guillemot à cou blanc, Mérgulo antiguo
  Synthliboramphus craveri (Salvadori, 1865) -- valid -- Craveri's Murrelet, Guillemot de Craveri, Mérgulo de Craveri
  Synthliboramphus hypoleucus (Xantus de Vesey, 1860) -- valid -- Guillemot de Xantus, Xantus' Murrelet, Xantus' Murrelet, Xantus's Murrelet
  Tachybaptus dominicus (Linnaeus, 1766) -- valid -- Grèbe minime, Least Grebe, Zambullidor menor
  Tachycineta albilinea (Lawrence, 1863) -- valid -- Golondrina manglera, Mangrove Swallow
  Tachycineta bicolor (Vieillot, 1808) -- valid -- Golondrina bicolor, hirondelle bicolore, Tree Swallow
  Tachycineta thalassina (Swainson, 1827) -- valid -- Golondrina verdemar, Violet-green Swallow
  Tadarida brasiliensis (I. Geoffroy, 1824) -- valid -- Brazilian free-tailed bat, Brazilian Free-tailed Bat, Mexican Free-tailed Bat, Murciélago-cola suelta brasileño
  Tangara cabanisi (P. L. Sclater, 1868) -- valid -- Azure-rumped Tanager, Cabanis's Tanager, Tángara chiapaneca
  Tangara larvata (Du Bus de Gisignies, 1846) -- valid -- Golden-hooded Tanager, Tángara capucha dorada
  Tantalophis discolor (Günther, 1860) -- valid -- Culebra-ojo de gato-falsa oaxaqueña
  Tantilla atriceps (Günther, 1895) -- valid -- Culebra-encapuchada mexicana, Mexican Black-headed Snake
  Tantilla bocourti (Günther, 1895) -- valid -- Culebra-encapuchada de Bocourt
  Tantilla briggsi Savitzky and Smith, 1971 -- valid -- Culebra-ciempiés de Briggs
  Tantilla calamarina Cope, 1866 -- valid -- Culebra-ciempiés del Pacífico
  Tantilla canula Cope, 1876 -- invalid -- Culebra-ciempiés imitacoral
  Tantilla cascadae Wilson and Meyer, 1981 -- valid -- Culebra-ciempiés michoacana
  Tantilla coronadoi Hartweg, 1944 -- valid -- Culebra-ciempiés guerrerense
  Tantilla cuniculator Smith, 1939 -- valid -- Culebra-ciempiés del Petén
  Tantilla deppei (Bocourt, 1883) -- valid -- Culebra-ciempiés de Deppe
  Tantilla flavilineata Smith and Burger, 1950 -- valid -- Culebra-ciempiés rayas amarillas
  Tantilla gracilis Baird and Girard, 1853 -- valid -- Culebra-ciempiés cabeza plana, Flat-headed Snake
  Tantilla hobartsmithi Taylor, 1937 -- valid -- Culebra-encapuchada del Suroeste, Southwestern Black-headed Snake
  Tantilla jani (Günther, 1895) -- valid -- Culebra-ciempiés de Jan
  Tantilla miniata Cope, 1863 -- invalid -- Culebra-ciempiés veracruzana
  Tantilla moesta (Günther, 1863) -- valid -- Culebra-ciempiés vientre negro
  Tantilla morgani Hartweg, 1944 -- invalid -- Culebra-encapuchada de Morgan
  Tantilla nigriceps Kennicott, 1860 -- valid -- Culebra-encapuchada de pradera, Plains Black-headed Snake
  Tantilla oaxacae Wilson and Meyer, 1971 -- valid -- Culebra-ciempiés oaxaqueña
  Tantilla planiceps (Blainville, 1835) -- valid -- California Black-headed Snake, Culebra-encapuchada californiana, Western Black-headed Snake
  Tantilla rubra Cope, 1875 -- valid -- Culebra-encapuchada roja, Reddish Black-headed Snake
  Tantilla schistosa (Bocourt, 1883) -- valid -- Culebra-ciempiés de tierra colorada
  Tantilla shawi Taylor, 1949 -- valid -- Culebra-ciempiés de Potosí
  Tantilla slavensi Pérez-Higareda, Smith and Smith, 1985 -- valid -- Culebra-ciempiés de Slavens
  Tantilla striata Dunn, 1928 -- valid -- Culebra-ciempiés rayada
  Tantilla taeniata (Bocourt, 1883) -- valid -- Culebra-ciempiés centroamericana
  Tantilla tayrae Wilson, 1983 -- valid -- Culebra-ciempiés del Tacaná
  Tantilla wilcoxi Stejneger, 1902 -- valid -- Chihuahuan Black-headed Snake, Culebra-encapuchada chihuahuense
  Tantilla yaquia Smith, 1942 -- valid -- Culebra-encapuchada yaqui, Yaqui Black-headed Snake
  Tantillita brevissima (Taylor, 1937) -- valid -- Culebra-cola corta jaspeada
  Tantillita lintoni (Smith, 1940) -- valid -- Culebra-cola corta de Linton
  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 -- Common Box Turtle, Eastern Box Turtle, tortue tabatière, Tortuga de Carolina
  Terrapene coahuila Schmidt and Owens, 1944 -- valid -- Aquatic Box Turtle, Coahuilan Box Turtle, Tortuga de Cuatro CIénegas
  Terrapene nelsoni Stejneger, 1925 -- valid -- Spotted Box Turtle, Tortuga manchada
  Terrapene ornata (Agassiz, 1857) -- valid -- Ornate Box Turtle, Tortuga adornada, Western Box Turtle
  Thalurania ridgwayi Nelson, 1900 -- valid -- Mexican Woodnymph, Ninfa mexicana
  Thamnistes anabatinus P. L. Sclater & Salvin, 1860 -- valid -- Batará café, Russet Antshrike
  Thamnophilus doliatus (Linnaeus, 1764) -- valid -- Barred Antshrike, Batará barrado
  Thamnophis chrysocephalus (Cope, 1885) -- valid -- Culebra-listonada cabeza dorada
  Thamnophis cyrtopsis (Kennicott, 1860) -- valid -- Black-necked Garter Snake, Culebra-listonada cuello negro
  Thamnophis digueti (Mocquard, 1899) -- invalid -- Culebra-listonada de Diguet
  Thamnophis elegans (Baird and Girard, 1853) -- valid -- Culebra-listonada elegante, Western Terrestrial Garter Snake
  Thamnophis eques (Reuss, 1834) -- valid -- Culebra-listonada del sur-mexicano, Mexican Garter Snake
  Thamnophis errans Smith, 1942 -- valid -- Culebra-listonada errante
  Thamnophis exsul Rossman, 1969 -- valid -- Culebra-listonada de montaña
  Thamnophis fulvus (Bocourt, 1893) -- valid -- Culebra-listonada amarillenta
  Thamnophis godmani (Günther, 1894) -- valid -- Culebra-listonada de Godman
  Thamnophis marcianus (Baird and Girard, 1853) -- valid -- Checkered Garter Snake, Culebra-listonada manchada
  Thamnophis melanogaster (Peters, 1864) -- valid -- Culebra-de agua vientre negro
  Thamnophis mendax Walker, 1955 -- valid -- Culebra-listonada tamaulipeca
  Thamnophis proximus (Say in James, 1823) -- valid -- Culebra-listonada occidental, Western Ribbon Snake
  Thamnophis pulchrilatus (Cope, 1885) -- valid -- Culebra-listonada de tierras altas-mexicana
  Thamnophis rufipunctatus (Cope, 1875) -- valid -- Culebra-de agua cabeza angosta, Narrow-headed Garter Snake, Narrowhead Garter Snake
  Thamnophis scalaris Cope, 1861 -- valid -- Culebra-listonada de montaña-cola larga
  Thamnophis scaliger (Jan, 1863) -- valid -- Culebra-listonada de montaña-cola corta
  Thamnophis sirtalis (Linnaeus, 1758) -- valid -- Common Garter Snake, couleuvre rayée, Culebra-listonada común
  Thamnophis sumichrasti (Cope, 1867) -- valid -- Culebra-listonada de Sumichrast
  Thamnophis valida (Kennicott, 1860) -- valid -- Culebra-listonada de la costa-oeste
  Thomomys bottae (Eydoux and Gervais, 1836) -- valid -- Botta's Pocket Gopher, Tuza de Botta
  Thomomys umbrinus (Richardson, 1829) -- valid -- Southern Pocket Gopher, Tuza mexicana
  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
  Thraupis episcopus (Linnaeus, 1766) -- valid -- Blue-gray Tanager, Blue-grey Tanager, Tángara azulgris
  Thryomanes bewickii (Audubon, 1827) -- valid -- Bewick's Wren, Chivirín cola oscura
  Thryomanes sissonii (Grayson, 1868) -- invalid -- Chivirín de Socorro, Socorro Wren
  Thryophilus pleurostictus (P. L. Sclater, 1860) -- valid -- Banded Wren, Chivirín barrado
  Thryophilus rufalbus (Lafresnaye, 1845) -- valid -- Chivirín rojizo, Rufous-and-white Wren
  Thryophilus sinaloa S. F. Baird, 1864 -- valid -- Chivirín sinaloense, Sinaloa Wren
  Thryothorus felix P. L. Sclater, 1860 -- invalid -- Chivirín feliz, Happy Wren
  Thryothorus ludovicianus (Latham, 1790) -- valid -- Carolina Wren, Chivirín de Carolina, 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 -- Banded Wren, Chivirín barrado
  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 -- Semillero oliváceo, Yellow-faced Grassquit
  Tigrisoma lineatum (Boddaert, 1783) -- valid -- Garza-tigre colorada, Onoré rayé, Rufescent Tiger Heron, Rufescent Tiger-Heron
  Tigrisoma mexicanum Swainson, 1834 -- valid -- Bare-throated Tiger Heron, Bare-throated Tiger-Heron, Garza-tigre mexicana, Onoré du Mexique
  Tilmatura dupontii (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 -- Mosquero ojo blanco, Yellow-olive Flatbill, Yellow-olive Flycatcher
  Toluca amphisticha Smith and Laufe, 1945 -- valid -- Culebra-toluqueña manchas gemelas
  Toluca conica Taylor and Smith, 1942 -- valid -- Culebra-toluqueña manchas grandes
  Toluca lineata Kennicott, 1859 -- valid -- Culebra-toluqueña lineada
  Toluca megalodon Taylor and Smith, 1942 -- valid -- 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, Gray Thrasher, Grey Thrasher
  Toxostoma crissale Henry, 1858 -- valid -- Crissal Thrasher, Cuitlacoche crisal
  Toxostoma curvirostre (Swainson, 1827) -- valid -- Cuitlacoche pico curvo, Curve-billed Thrasher
  Toxostoma guttatum (Ridgway, 1885) -- valid -- Cozumel Thrasher, Cuitlacoche de Cozumel
  Toxostoma lecontei Lawrence, 1851 -- valid -- Cuitlacoche pálido, Le Conte's Thrasher
  Toxostoma longirostre (Lafresnaye, 1838) -- valid -- Cuitlacoche pico largo, Long-billed Thrasher
  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 -- Brown Thrasher, Cuitlacoche rojizo, moqueur roux
  Trachemys scripta (Thunberg in Schoepff, 1792) -- valid -- Common Slider, Pond Slider, slider, tortue à oreilles rouges, Tortuga gravada
  Tretanorhinus nigroluteus Cope, 1861 -- valid -- Culebra-buceadora vientre naranja
  Trichechus manatus Linnaeus, 1758 -- valid -- Caribbean manatee, manatee, Manatí del Caribe, West Indian Manatee
  Trimorphodon biscutatus (Duméril, Bibron and Duméril, 1854) -- valid -- Culebra-lira cabeza negra, Western Lyre Snake
  Trimorphodon tau Cope, 1870 -- valid -- Culebra-lira mexicana
  Tringa flavipes (Gmelin, 1789) -- valid -- Lesser Yellowlegs, Patamarilla menor, Petit Chevalier
  Tringa melanoleuca (Gmelin, 1789) -- valid -- Grand Chevalier, Greater Yellowlegs, Patamarilla mayor
  Tringa solitaria A. Wilson, 1813 -- valid -- Chevalier solitaire, Playero solitario, Solitary Sandpiper
  Triprion petasatus (Cope, 1865) -- valid -- Rana-de árbol yucateca
  Triprion spatulatus Günther, 1882 -- invalid -- 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 -- Chivirín de Socorro, Socorro Wren
  Troglodytes tanneri C. H. Townsend, 1890 -- valid -- Chivirín de Clarión, Clarion Wren
  Troglodytes troglodytes (Linnaeus, 1758) -- valid -- Chivirín chochín, troglodyte mignon, Winter Wren
  Trogon citreolus Gould, 1835 -- valid -- Citreoline Trogon, Trogón citrino
  Trogon collaris Vieillot, 1817 -- valid -- Collared Trogon, Trogón de collar
  Trogon elegans Gould, 1834 -- valid -- Elegant Trogon, Trogón elegante
  Trogon massena Gould, 1838 -- valid -- Slaty-tailed Trogon, Trogón cola oscura
  Trogon melanocephalus Gould, 1836 -- valid -- Black-headed Trogon, Trogón cabeza negra
  Trogon mexicanus Swainson, 1827 -- valid -- Mountain Trogon, Trogón mexicano
  Trogon violaceus Gmelin, 1788 -- valid -- Trogón violáceo, Violaceous Trogon
  Tryngites subruficollis (Vieillot, 1819) -- valid -- Bécasseau roussâtre, Buff-breasted Sandpiper, Playero leonado
  Turdus assimilis Cabanis, 1850 -- valid -- Mirlo garganta blanca, White-throated Robin, White-throated Thrush
  Turdus grayi Bonaparte, 1838 -- valid -- Clay-colored Robin, Clay-colored Thrush, Mirlo pardo
  Turdus graysoni (Ridgway, 1882) -- invalid -- Grayson's Thrush, Mirlo nayarita
  Turdus infuscatus (Lafresnaye, 1844) -- valid -- Black Robin, Black Thrush, Mirlo negro
  Turdus migratorius Linnaeus, 1766 -- valid -- American Robin, merle d'Amérique, Mirlo primavera
  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 -- Mirlo dorso rufo, Rufous-backed Robin
  Turdus rufopalliatus graysoni (Ridgway, 1882) -- valid -- Grayson's Thrush, Mirlo nayarita
  Tursiops truncatus (Montagu, 1821) -- valid -- Bottlenose Dolphin, Bottlenosed Dolphin, Delfín tonina
  Typhlops microstomus Cope, 1866 -- valid -- 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, Grey Kingbird, Tirano gris
  Tyrannus forficatus (Gmelin, 1789) -- valid -- Scissor-tailed Flycatcher, Tirano-tijereta rosado, tyran à longue queue
  Tyrannus melancholicus Vieillot, 1819 -- valid -- Tirano tropical, Tropical Kingbird
  Tyrannus savana Vieillot, 1808 -- valid -- Fork-tailed Flycatcher, Tirano-tijereta gris, tyran des savanes
  Tyrannus tyrannus (Linnaeus, 1758) -- valid -- Eastern Kingbird, Tirano dorso negro, tyran tritri
  Tyrannus verticalis Say, 1823 -- valid -- Tirano pálido, tyran de l'ouest, Western Kingbird
  Tyrannus vociferans Swainson, 1826 -- valid -- Cassin's Kingbird, Tirano gritón
  Tyto alba (Scopoli, 1769) -- valid -- Barn Owl, Common Barn-Owl, effraie de clochers, Lechuza de campanario
  Uma exsul K. P. Schmidt and Bogert, 1947 -- valid -- Fringe-toed Sand Lizard, Lagartija-arenera proscrita
  Uma notata Baird, 1859 -- valid -- Colorado Desert Fringe-toed Lizard, Lagartija-arenera del Colorado
  Uma paraphygas Williams, Chrapliwy and H. M. Smith, 1959 -- valid -- Chihuahuan Fringe-toed Lizard, Lagartija-arenera de Chihuahua
  Ungaliophis continentalis Müller, 1880 -- valid -- Boa-enana del Istmo
  Uria aalge (Pontoppidan, 1763) -- valid -- Arao común, Common Murre, Guillemot marmette
  Urocyon cinereoargenteus (Schreber, 1775) -- valid -- Common Gray Fox, Gray Fox, renard gris, Zorra 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 -- Clarion Island Tree Lizard, Lagartija-arbolera de Clarion
  Urosaurus gadovi (K. P. Schmidt, 1921) -- valid -- Gadow's Tree Lizard, Lagartija-arbolera de Gadow
  Urosaurus graciosus Hallowell, 1854 -- valid -- Lagartija-arbolera cola larga, Long-tailed Brush Lizard
  Urosaurus irregularis (Fischer, 1882) -- invalid -- Lagartija-arbolera mexicana
  Urosaurus lahtelai Rau and Loomis, 1977 -- valid -- Baja California Brush Lizard, Lagartija-arbolera de Baja California
  Urosaurus microscutatus (Van Denburgh, 1894) -- invalid -- Lagartija-arbolera escamas chicas, Small-scaled Lizard
  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 -- Lagartija-arbolera común, Ornate Tree Lizard, Tree Lizard
  Urotheca elapoides (Cope, 1860) -- valid -- 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 -- Common Side-blotched Lizard, Lagartija-costado manchado común, Side-blotched Lizard
  Veniliornis fumigatus (Orbigny, 1840) -- valid -- 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, Golden-winged Warbler, Paruline à ailes dorées
  Vermivora crissalis (Salvin & Godman, 1889) -- invalid -- Chipe crisal, Colima Warbler
  Vermivora luciae (J. G. Cooper, 1861) -- invalid -- Chipe rabadilla rufa, Lucy's Warbler
  Vermivora peregrina (A. Wilson, 1811) -- invalid -- Chipe peregrino, paruline obscure, Tennessee Warbler
  Vermivora pinus (Linnaeus, 1766) -- invalid -- Blue-winged Warbler, Chipe ala azul, 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 -- Cozumel Vireo, Vireo de Cozumel
  Vireo bellii Audubon, 1844 -- valid -- Bell's Vireo, Vireo de Bell
  Vireo brevipennis (P. L. Sclater, 1858) -- valid -- Slaty Vireo, Vireo pizarra
  Vireo cassinii Xantus de Vesey, 1858 -- valid -- Cassin's Vireo, Vireo de Cassin
  Vireo flavifrons Vieillot, 1808 -- valid -- viréo à gorge jaune, Vireo garganta amarilla, Yellow-throated Vireo
  Vireo flavoviridis (Cassin, 1851) -- valid -- Vireo verdeamarillo, Yellow-green Vireo
  Vireo gilvus (Vieillot, 1808) -- valid -- Vireo gorjeador, viréo mélodieux, Warbling Vireo
  Vireo griseus (Boddaert, 1783) -- valid -- viréo aux yeux blancs, Vireo ojo blanco, White-eyed Vireo
  Vireo huttoni Cassin, 1851 -- valid -- Hutton's Vireo, Vireo reyezuelo
  Vireo hypochryseus P. L. Sclater, 1863 -- valid -- Golden Vireo, Vireo dorado
  Vireo leucophrys (Lafresnaye, 1844) -- valid -- Brown-capped Vireo, Vireo gorra parda
  Vireo magister (S. F. Baird, 1871) -- valid -- Vireo yucateco, Yucatan Vireo
  Vireo nelsoni Bond, 1936 -- valid -- Dwarf Vireo, Vireo enano
  Vireo olivaceus (Linnaeus, 1766) -- valid -- Red-eyed Vireo, viréo aux yeux rouges, Vireo ojo rojo
  Vireo pallens Salvin, 1863 -- valid -- Mangrove Vireo, Vireo manglero
  Vireo philadelphicus (Cassin, 1851) -- valid -- Philadelphia Vireo, Vireo de Filadelfia, viréo de Philadelphie
  Vireo plumbeus Coues, 1866 -- valid -- Plumbeous Vireo, Vireo plomizo
  Vireo solitarius (A. Wilson, 1810) -- valid -- Blue-headed Vireo, Solitary Vireo, viréo à tête bleue, Vireo anteojillo
  Vireo vicinior Coues, 1866 -- valid -- Gray Vireo, Grey Vireo, Vireo gris
  Vireolanius melitophrys Bonaparte, 1850 -- valid -- Chestnut-sided Shrike-Vireo, Vireón pecho castaño
  Vireolanius pulchellus P. L. Sclater & Salvin, 1859 -- valid -- Green Shrike-Vireo, Vireón esmeralda
  Volatinia jacarina (Linnaeus, 1766) -- valid -- Blue-black Grassquit, Semillero brincador
  Vulpes velox (Say, 1823) -- valid -- Swift Fox, Zorra desértica
  Wilsonia canadensis (Linnaeus, 1766) -- invalid -- Canada Warbler, Chipe de collar, paruline du Canada
  Wilsonia citrina (Boddaert, 1783) -- invalid -- Chipe encapuchado, Hooded Warbler, paruline à capuchon
  Wilsonia pusilla (A. Wilson, 1811) -- invalid -- Chipe corona negra, paruline à calotte noire, Wilson's Warbler
  Xanthocephalus xanthocephalus (Bonaparte, 1826) -- valid -- carouge à tête jaune, Yellow-headed Blackbird, Yellow-headed Blackbird
  Xantusia bolsonae Webb, 1970 -- valid -- Lagartija-escofina de Mapimí
  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, Mouette de Sabine, Sabine's Gull
  Xenodon rabdocephalus (Wied-Neuwied, 1824) -- valid -- Culebra-engañosa norteña
  Xenops minutus (Sparrman, 1788) -- valid -- Picolezna liso, Plain Xenops
  Xenopus laevis (Daudin, 1802) -- valid -- African Clawed Frog, Rana-de garras africana
  Xenosaurus grandis (Gray, 1856) -- valid -- Xenosaurio mayor
  Xenosaurus newmanorum Taylor, 1949 -- valid -- Xenosaurio de Newman
  Xenosaurus platyceps King and Thompson, 1968 -- valid -- Xenosaurio cabeza plana
  Xenospiza baileyi Bangs, 1931 -- valid -- Gorrión serrano, Sierra Madre Sparrow
  Xenotriccus callizonus Dwight & Griscom, 1927 -- valid -- Belted Flycatcher, Mosquero fajado
  Xenotriccus mexicanus (Zimmer, 1938) -- valid -- Mosquero del Balsas, Pileated Flycatcher
  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 sea lion, California Sealion, Lobo-marino californiano
  Zenaida asiatica (Linnaeus, 1758) -- valid -- Paloma ala blanca, tourterelle à ailes blanches, White-winged Dove
  Zenaida aurita (Temminck, 1809) -- valid -- Paloma aurita, Zenaida Dove
  Zenaida graysoni (Lawrence, 1871) -- valid -- Paloma de Socorro, Socorro Dove
  Zenaida macroura (Linnaeus, 1758) -- valid -- Mourning Dove, Paloma huilota, tourterelle triste
  Zimmerius vilissimus (P. L. Sclater & Salvin, 1859) -- valid -- Mosquero ceja gris, Paltry Tyrannulet
  Ziphius cavirostris G. Cuvier, 1823 -- valid -- Ballena-picuda de Couvier, Cuvier's Beaked Whale, goose-beaked whale, goosebeak whale
  Zonotrichia albicollis (J. F. Gmelin, 1789) -- valid -- bruant à gorge blanche, Gorrión garganta blanca, White-throated Sparrow
  Zonotrichia atricapilla (J. F. Gmelin, 1789) -- valid -- Golden-crowned Sparrow, Gorrión corona dorada
  Zonotrichia capensis (P. L. Statius Müller, 1776) -- valid -- Gorrión chingolo, Rufous-collared Sparrow
  Zonotrichia leucophrys (J. R. Forster, 1772) -- valid -- bruant à couronne blanche, Gorrión corona blanca, White-crowned Sparrow
 
 Kingdom Plantae
  Abies concolor (Gordon & Glend.) Lindl. ex Hildebr. -- accepted -- balsam fir, Colorado fir, concolor fir, oyamel de California, silver fir, white balsam, white fir
  Abies guatemalensis Rehder -- accepted -- Guatemalan fir, oyamel de Guatemala, pinabete
  Acanthocereus tetragonus (L.) Hummelinck -- accepted -- Órgano-alado de pitaya, triangle cactus
  Aechmea nudicaulis (L.) Griseb. -- accepted -- Aechmea desnuda, nakedstem livingvase
  Agave americana L. -- accepted -- American agave, American century plant, centuryplant, Maguey americano
  Agave angustifolia Haw. -- accepted -- century plant, Maguey espadín
  Agave asperrima Jacobi -- accepted -- Maguey áspero, rough century plant
  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 agave, Chisos Mountain century plant, Maguey del Bravo
  Agave gracilipes Trel. -- accepted -- Maguey de pastizal, slimfoot century plant
  Agave havardiana Trel. -- accepted -- Havard's century plant, Maguey de Havard
  Agave lechuguilla Torr. -- not accepted -- lecheguilla, lechuguilla, Maguey lechuguilla
  Agave lophantha Schiede -- not accepted -- Maguey mezortillo, thorncrest century plant
  Agave murpheyi F. Gibson -- accepted -- Maguey bandeado, Murphey agave, Murphey's century plant
  Agave neomexicana Wooton & Standl. -- not accepted -- Maguey de Nuevo México
  Agave palmeri Engelm. -- accepted -- Maguey de tlalcoyote, Palmer agave, Palmer century plant, Palmer's century plant
  Agave parryi Engelm. -- accepted -- Mezcal yapavai, Parry agave, Parry's agave
  Agave parviflora Torr. -- accepted -- Maguey sóbari, smallflower agave, smallflower century plant
  Agave schottii Engelm. -- accepted -- Maguey puercoespín, Schott agave, Schott's century plant
  Agave shawii Engelm. -- accepted -- coastal agave, Maguey primavera, Shaw's agave
  Agave sisalana Perrine -- accepted -- Maguey de Sisal, sisal, sisal hemp
  Agave tequilana F.A.C. Weber -- accepted -- Mezcal azul tequilero, tequila agave
  Agave weberi F. Cels ex J. Poiss. -- accepted -- Maguey liso, Weber's century plant
  Agave xylonacantha Salm-Dyck -- accepted -- century plant, Maguey diente de tiburón
  Ananas comosus (L.) Merr. -- accepted -- Piña, pineapple
  Ariocarpus fissuratus (Engelm.) K. Schum. -- accepted -- Biznaga peyotillo, chautle livingrock
  Ariocarpus retusus Scheidw. -- accepted -- Biznaga-maguey peyote cimarrón
  Astrophytum asterias (Zucc.) Lem. -- accepted -- Biznaga-algononcillo de estrella, sanddollar, seaurchin starcactus, star cactus
  Beloglottis costaricensis (Rchb. f.) Schltr. -- accepted -- Costa Rican lady's tresses, Trencita de Costa Rica
  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 -- pinguin, Piñuela timbiriche
  Bromelia plumieri (E. Morren) L.B. Sm. -- accepted -- Piñuela aguama cazuela, Plumier's bromelia
  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 -- Caribbean strap airplant, Catopsis brillante
  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 -- Camedor xiat, Seifriz's chamaedorea
  Cochleanthes flabelliformis (Sw.) R.E. Schult. & Garay -- accepted -- Cochleanthes de abanico, fanshape orchid
  Cocos nucifera L. -- accepted -- coconut palm, Palma de Coco
  Coelia triptera auct. non (Sm.) G. Don ex Steud. -- not accepted -- Coelia blanca, threewing coelia
  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 -- coralroot, Raíz-de-coral primaveral, spring coralroot
  Corymborkis forcipigera (Rchb. f. & Warsz.) L.O. Williams -- accepted -- Corymborkis selvática, lime orchid
  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 -- beehive coryphantha, Biznaga-partida mula, Scheer's beehive cactus
  Cranichis diphylla Sw. -- accepted -- Cranichis bifoliada
  Cupressus arizonica Greene -- not accepted -- Arizona cypress, Arizona smooth cypress, cedro, cedro blanco, ciprés de Arizona, ciprés fibrosa, Cuyamaca cypress, Piute cypress
  Cupressus forbesii Jeps. -- not accepted -- ciprés negro, Forbes cypress, Tecate cypress
  Cupressus guadalupensis S. Watson -- not accepted -- ciprés brillante
  Dasylirion leiophyllum Engelm. ex Trel. -- accepted -- green sotol, smooth sotol, Sotol brillante
  Dasylirion texanum Scheele -- accepted -- Sotol texano, Texas sotol
  Dasylirion wheeleri S. Watson -- accepted -- common sotol, sotol, Sotol de desierto
  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 barrel cactus, cottontop cactus
  Echinocactus texensis Hopffer -- accepted -- Biznaga-tonel manca caballo, devil's pincushion, horse crippler
  Echinocereus berlandieri (Engelm.) J.N. Haage -- accepted -- Berlandier's hedgehog cactus, Órgano-pequeño de Berlandier
  Echinocereus chisoensis W.T. Marshall -- not accepted -- chisos lace cactus, Chisos Mountain hedgehog cactus, Órgano-pequeño chiso
  Echinocereus chloranthus (Engelm.) J.N. Haage -- not accepted -- brownspine hedgehog cactus, Órgano-pequeño de flor verde
  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 -- Engelmann's hedgehog cactus, Órgano-pequeño fresa, 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 -- Fendler's hedgehog cactus, Órgano-pequeño de Nuevo México, pinkflower hedgehog cactus
  Echinocereus papillosus Linke ex Rümpler -- accepted -- Allicoche hedgehog cactus, Órgano-pequeño cardoncillo
  Echinocereus pectinatus (Scheidw.) Engelm. -- accepted -- Órgano-pequeño peine, rainbow cactus
  Echinocereus pentalophus (DC.) Lem. -- accepted -- ladyfinger cactus, Órgano-pequeño alicoche falso
  Echinocereus polyacanthus Engelm. -- accepted -- Mojave mound cactus, Órgano-pequeño enmarañado
  Echinocereus poselgeri Lem. -- accepted -- dahlia hedgehog cactus, Órgano-pequeño sacasil
  Echinocereus reichenbachii (Terscheck ex Walp.) J.N. Haage -- accepted -- lace hedgehog cactus, Órgano-pequeño de colores
  Echinocereus russanthus D. Weniger -- accepted -- brownspine hedgehog cactus, Órgano-pequeño chiso, rusty hedgehog cactus
  Echinocereus stramineus (Engelm.) F. Seitz -- accepted -- Órgano-pequeño sanjuanero, strawberry hedgehog cactus
  Echinocereus triglochidiatus Engelm. -- accepted -- claretcup hedgehog, kingcup cactus, Mojave mound cactus, Órgano-pequeño copa de vino
  Encyclia cochleata (L.) Dressler -- not accepted -- clamshell orchid, Encyclia pulpito
  Encyclia gravida (Lindl.) Schltr. -- not accepted -- Encyclia grávida, heavyfruit butterfly orchid
  Encyclia pygmaea (Hook.) Dressler -- not accepted -- dwarf butterfly orchid, Encyclia pigmea
  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 -- broadleaf star orchid, Epidendrum de hoja amplia
  Epidendrum nocturnum Jacq. -- accepted -- dama de noche, Epidendrum nocturno, night scented orchid
  Epidendrum pseudoramosum Schltr. -- accepted -- Epidendrum ramificado, grand star orchid
  Epidendrum radicans Pav. ex Lindl. -- accepted -- Epidendrum de los caminos, fire star orchid
  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 -- giant helleborine, Heleborina gigante, stream orchid
  Epiphyllum hookeri Haw. -- accepted -- nightblooming cactus, Nopalillo de Hooker
  Epiphyllum oxypetalum (DC.) Haw. -- accepted -- Dutchman's pipe cactus, Nopalillo criollo
  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 -- Big Bend foxtail cactus, Biznaga-Escobar de espinas gruesas
  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 -- Eulophia alta, wild coco
  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, coast barrel cactus, San Diego barrel cactus
  Ferocactus wislizeni (Engelm.) Britton & Rose -- accepted -- Biznaga-barril de Nuevo México, candy barrel cactus, fishhook barrel cactus
  Goodyera oblongifolia Raf. -- accepted -- Goodyera del norte, rattlesnake plantain, western rattlesnake plantain
  Govenia liliacea Lindl. -- not accepted -- Govenia liliácea
  Guzmania lingulata (L.) Mez -- accepted -- droophead tufted airplant, Guzmania lenguada
  Habenaria alata Hook. -- accepted -- Habenaria alada, winged bog orchid
  Habenaria distans Griseb. -- accepted -- Habenaria arrosetada, hammock bog orchid
  Habenaria eustachya Rchb. f. -- accepted -- Habenaria grande, woodland bog orchid
  Habenaria floribunda Lindl. -- accepted -- Habenaria azulosa, toothpetal bog orchid
  Habenaria monorrhiza (Sw.) Rchb. f. -- accepted -- Habenaria de caminos, tropical bog orchid
  Habenaria quinqueseta (Michx.) Eaton -- accepted -- Habenaria blanca, longhorn bog orchid, longhorn false reinorchid
  Habenaria repens Nutt. -- accepted -- Habenaria acuática, waterspider bog orchid, waterspider false reinorchid
  Habenaria strictissima Rchb. f. -- accepted -- Habenaria angosta
  Hechtia glomerata Zucc. -- accepted -- guapilla, Guapilla flores amontonadas
  Hechtia texensis S. Watson -- accepted -- Guapilla de Texas, Texas false agave
  Hesperaloe funifera (K. Koch) Trel. -- accepted -- New Mexico false yucca, New Mexico falseyucca, Samandoque común
  Hesperaloe parviflora (Torr.) J.M. Coult. -- accepted -- redflower false yucca, redflower falseyucca, Samandoque flor roja
  Hexalectris grandiflora (A. Rich. & Galeotti) L.O. Williams -- accepted -- Greenman's hexalectris, largeflower crested coralroot, Raíz-de-coral rosada
  Hexalectris nitida L.O. Williams -- accepted -- Glass Mountain coral-root, Glass Mountain crested coralroot, Raíz-de-coral nítida
  Hexalectris revoluta Correll -- accepted -- Chisos coral-root, Chisos Mountain crested coralroot, Raíz de coral revoluta
  Hexalectris spicata (Walter) Barnhart -- accepted -- crested coralroot, Raíz-de-coral crestada, spiked crested coralroot, spiked crested-coralroot
  Hexalectris warnockii Ames & Correll -- accepted -- Raíz-de-Coral de Texas, Texas crested coralroot, Texas crested-coralroot
  Hylocereus undatus (Haw.) Britton & Rose -- accepted -- nightblooming cactus, Pitahaya orejona
  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 -- Jacquiniella globosa, redblotch tufted orchid
  Jacquiniella teretifolia (Sw.) Britton & P. Wilson -- accepted -- Jacquiniella carnosa, moss tufted orchid
  Juniperus ashei J. Buchholz -- accepted -- Ashe juniper, Ashe's juniper, enebro de monte
  Juniperus californica Carrière -- accepted -- California juniper, enebro de california
  Juniperus deppeana Steud. -- accepted -- alligator juniper, checker bark juniper, enebro chino
  Juniperus deppeana var. pachyphlaea (Torr.) Martínez -- not accepted -- enebro aborí
  Juniperus erythrocarpa auct. non Cory -- not accepted -- enebro agoriza, redberry juniper
  Juniperus flaccida Schltdl. -- accepted -- drooping juniper, enebro liso
  Juniperus monosperma (Engelm.) Sarg. -- accepted -- enebro de sombra, oneseed juniper
  Juniperus pinchotii Sudw. -- accepted -- enebro de fruto rojo, Pinchot juniper, Pinchot's juniper, redberry juniper
  Juniperus scopulorum Sarg. -- accepted -- enebro riparío, Rocky Mountain juniper
  Leochilus labiatus (Sw.) Kuntze -- accepted -- green smoothlip orchid, Leochilus de labio, 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 -- green adder's-mouth orchid, green addersmouth orchid, Malaxis unifolia
  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 -- Biznaga china, Heyder's pincushion cactus, little nipple cactus
  Mammillaria lasiacantha Engelm. -- accepted -- Biznaga de espinas pubescentes, lacespine nipple cactus, small pincushion cactus
  Mammillaria mainiae K. Brandegee -- accepted -- Biznaga de Nogales, counterclockwise nipple cactus, Maine pincushion 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 -- Biznaga de cuatro ganchos, common fishhook cactus, corkseed pincushion cactus
  Mammillaria thornberi Orcutt -- accepted -- Biznaga de Thornber, Thornber's nipple cactus, Thornber's pincushion 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 -- Biznaga de Wright, Wright's nipple cactus, Wright's pincushion cactus
  Manfreda longiflora (Rose) Verh-Will. -- accepted -- Amole de río, longflower tuberose, Runyon huaco
  Manfreda maculosa (Hook.) Rose -- accepted -- Amole de culebra, spice lily
  Manfreda variegata (Jacobi) Rose -- accepted -- Amole akayman, mottled tuberose
  Manfreda virginica (L.) Salisb. ex Rose -- accepted -- Amole de Virginia, false aloe
  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 -- Florida Keys ladies'-tresses, Spiranthes lucayana
  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 -- Bigelow nolina, Bigelow's nolina, Palmilla de culebra
  Nolina erumpens (Torr.) S. Watson -- accepted -- beargrass, foothill beargrass, Palmilla de Chihuahua
  Nolina microcarpa S. Watson -- accepted -- Palmilla sacahuista, sacahuista
  Nolina parryi S. Watson -- accepted -- Palmilla de Parry, Parry's beargrass, Parry's sacahuista
  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 -- Florida orchid, Latin American orchid, Oncidium de sabana
  Oncidium luridum auct. non Lindl. -- not accepted -- Oncidium pardo
  Opuntia acanthocarpa Engelm. & J.M. Bigelow -- not accepted -- buckhorn cholla, Cholla espinosa
  Opuntia arbuscula Engelm. -- not accepted -- Arizona pencil cholla, Cholla arbusto, pencil cholla
  Opuntia atrispina Griffiths -- accepted -- border pricklypear, Nopal calvo
  Opuntia auberi Pfeiff. -- not accepted
  Opuntia basilaris Engelm. & J.M. Bigelow -- accepted -- beavertail pricklypear, Nopal del castor
  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 -- Chihuahua pricklypear, Nopal de Chihuahua
  Opuntia chlorotica Engelm. & J.M. Bigelow -- accepted -- dollarjoint pricklypear, Nopal verdoso, pancake pricklypear
  Opuntia cochenillifera (L.) Mill. -- not accepted -- cochineal cactus, cochineal nopal cactus, Nopal de cochinilla
  Opuntia discata Griffiths -- accepted -- Nopal disco, smallfruit pricklypear
  Opuntia echinocarpa Engelm. & J.M. Bigelow -- not accepted -- Cholla plateada, golden cholla, silver cholla
  Opuntia engelmannii Salm-Dyck -- not accepted -- cactus apple, Engelmann's pricklypear, Nopal de Engelmann
  Opuntia ficus-indica (L.) Mill. -- accepted -- Indian-fig, Nopal de Castilla, tuna cactus
  Opuntia fulgida Engelm. -- not accepted -- Cholla brillante, jumping cholla
  Opuntia grahamii Engelm. -- not accepted -- Cholla de Graham, devil cholla, Graham's pricklypear
  Opuntia humifusa (Raf.) Raf. -- accepted -- devil's-tongue, Nopal del este, 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 -- candle cholla, Cholla tasajillo macho, 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 -- arborescent pricklypear, Nopal duraznillo
  Opuntia lindheimeri Engelm. -- not accepted -- Nopal arrastrado
  Opuntia littoralis (Engelm.) Cockerell -- accepted -- coastal pricklypear, Nopal del litoral
  Opuntia macrocentra Engelm. -- accepted -- Nopal violaceo, purple pricklypear
  Opuntia macrorhiza Engelm. -- accepted -- grassland pricklypear, Nopal raizudo, plains twistspine pricklypear, 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 -- chaparral pricklypear, Nopal de montaña
  Opuntia parryi Engelm. -- not accepted -- brownspined pricklypear, Cholla de California
  Opuntia phaeacantha Engelm. -- accepted -- brownspine pricklypear, Nopal pardo, tulip pricklypear
  Opuntia plumbea Rose -- not accepted -- Nopal enano
  Opuntia prolifera Engelm. -- not accepted -- Cholla prolifera, coastal cholla
  Opuntia ramosissima Engelm. -- not accepted -- branched pencil cholla, Cholla diamante, diamond cholla, pencil cholla
  Opuntia rufida Engelm. -- accepted -- blind pricklypear, Nopal rojizo
  Opuntia schottii Engelm. -- not accepted -- Cholla abrojo de Texas, dog cactus, dog cholla
  Opuntia serpentina Engelm. -- not accepted -- Cholla serpentina
  Opuntia spinosior (Engelm.) Toumey -- not accepted -- cane cholla, Cholla tasajillo de Arizona, walkingstick cactus
  Opuntia stricta (Haw.) Haw. -- accepted -- erect pricklypear, Nopal estricto
  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 -- abrojo, Cholla clavellina, thistle cholla
  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 -- hachuela, Spiranthes adnada
  Pinus arizonica Engelm. -- accepted -- Arizona pine, pino de Arizona
  Pinus arizonica var. stormiae Martínez -- accepted -- Arizona pine, pino blanco
  Pinus attenuata Lemmon -- accepted -- chichonuda, knobcone pine
  Pinus ayacahuite C. Ehrenb. -- not accepted -- ayacahuite
  Pinus cembroides Zucc. -- accepted -- Mexican nut pine, Mexican pinyon, nut pine, pino piñonero, piñón de Orizaba, stone pine
  Pinus chiapensis (Martínez) Andresen -- not accepted -- pino de Chiapas
  Pinus chihuahuana Engelm. -- not accepted -- pino de Chihuahua
  Pinus coulteri D. Don -- accepted -- bigcone pine, Coulter pine, pino de brea, pitch pine
  Pinus discolor D.K. Bailey & Hawksw. -- accepted -- border pinyon, piñón de la frontera
  Pinus edulis Engelm. -- accepted -- Colorado pinyon, nut pine, piñón de Colorado, piñon pine, pinyon, pinyon pine, two-leaf pinyon, two-needle pinyon, twoneedle pinyon
  Pinus engelmannii Carrière -- accepted -- Apache pine, Arizona longleaf pine, pino real
  Pinus flexilis E. James -- accepted -- limber pine, pino torcido, Rocky Mountain white pine
  Pinus jeffreyi Balf. -- accepted -- black pine, Jeffrey pine, Jeffrey's pine, pino negro
  Pinus juarezensis Lanner -- not accepted -- piñón de California
  Pinus lambertiana Douglas -- accepted -- California sugar pine, pino de azúcar, sugar pine
  Pinus leiophylla Schiede & Deppe -- accepted -- Chihuahuan pine, pino prieto
  Pinus monophylla Torr. & Frém. -- accepted -- nut pine, one-leaf pine, piñón simple, singleleaf pinyon
  Pinus muricata D. Don -- accepted -- Bishop pine, pino peninsular, prickle-cone pine, Santa Cruz Island pine
  Pinus patula Schiede ex Schltdl. & Cham. -- accepted -- Mexican weeping pine, Pino colorado
  Pinus quadrifolia Parl. ex Sudw. -- accepted -- four-needle pinyon, nut pine, Parry pinyon, piñón de California
  Pinus radiata D. Don -- accepted -- insignis pine, Monterey pine, pino quebradizo
  Pinus remota (Little) D.K. Bailey & Hawksw. -- accepted -- papershell pinyon, pino de papel
  Piperia unalascensis (Spreng.) Rydb. -- not accepted -- Alaska bog orchid, Alaska rein orchid, Alaskan rein-orchid, Piperia de Alaska, pipérie d'Unalaska, 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 -- canyon bog orchid, Platanthera de pocas flores, sparse-flowered bog orchid
  Pleurothallis gelida Lindl. -- accepted -- flor de llanten, Pleurothallis de hielo
  Pleurothallis pubescens Lindl. -- accepted -- hairy bonnet orchid, Pleurothallis pelosa
  Pleurothallis racemiflora Lindl. ex Hook. -- accepted -- ladies' bonnet orchid, Pleurothallis fragante
  Polianthes tuberosa L. -- accepted -- Nardo común, tuberose
  Polystachya cerea Lindl. -- not accepted -- Polystachya de cera
  Ponthieva racemosa (Walter) C. Mohr -- accepted -- hairy shadow witch, Ponthieva racemosa
  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 -- mistletoe cactus, Nopalillo-mal ojo
  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, Florida royal palm, Palma real cubana
  Sabal mexicana Mart. -- accepted -- Palma apachite, palmetto, Rio Grande palmetto
  Sclerocactus erectocentrus (J.M. Coult.) N.P. Taylor -- accepted -- Biznaga-bola de centrales erectas, redspine fishhook cactus
  Sclerocactus intertextus (Engelm.) N.P. Taylor -- accepted -- Biznaga-bola entretejida, white fish-hook cactus, white fishhook cactus
  Sclerocactus mariposensis (Hester) N.P. Taylor -- accepted -- Biznaga-bola de Mariposa, golfball cactus, Lloyd's fishhook cactus, Lloyd's Mariposa cactus, silver column cactus
  Sclerocactus papyracanthus (Engelm.) N.P. Taylor -- accepted -- Biznaga-bola de espinas de papel, paperspine fishhook cactus
  Sclerocactus scheeri (Salm-Dyck) N.P. Taylor -- accepted -- Biznaga-bola ganchuda, Scheer's fishhook cactus, Tobusch fishhook cactus
  Sclerocactus uncinatus (Galeotti ex Pfeiff.) N.P. Taylor -- accepted -- Biznaga-bola uncinada, Chihuahuan fishhook cactus
  Sclerocactus warnockii (L.D. Benson) N.P. Taylor -- accepted -- Biznaga-bola amarilla, Warnock's fishhook cactus
  Selenicereus coniflorus (Weing.) Britton & Rose -- not accepted -- coneflower moonlight cactus, Pitayita-noctirna de culebra
  Selenicereus grandiflorus (L.) Britton & Rose -- accepted -- Pitayita-nocturna reina de la noche, queen of the night
  Selenicereus pteranthus (Link ex A. Dietr.) Britton & Rose -- accepted -- Pitayita-nocturna flor de la noche, princess of the night
  Selenicereus spinulosus (DC.) Britton & Rose -- accepted -- nightblooming cereus, Pitayita-nocturna espinosa, vinelike moonlight cactus
  Spiranthes graminea Lindl. -- accepted -- Canelo ladies'-tresses, Canelo lady's tresses, Spiranthes graminea
  Spiranthes torta (Thunb.) Garay & H.R. Sweet -- accepted -- southern ladies'-tresses, southern lady's tresses, Spiranthes torcida
  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 -- ahuehuetes, Mexican cypress, Montezuma bald cypress, Montezuma baldcypress, sabino
  Thelocactus bicolor (Galeotti ex Pfeiff.) Britton & Rose -- accepted -- Biznaga-pezón bicolor, glory of Texas
  Thelocactus setispinus (Engelm.) E.F. Anderson -- accepted -- Biznaga-pezón setosa, fishhook cactus, miniature barrel cactus
  Thrinax radiata Lodd. ex Schult. & Schult. f. -- accepted -- Florida thatch palm, Florida thatchpalm, Palma chit
  Tillandsia baileyi Rose ex Small -- accepted -- reflexed airplant, Tillandsia de Bailey
  Tillandsia balbisiana Schult. f. -- accepted -- northern needleleaf, Tillandsia de Balbis
  Tillandsia bartramii Elliot -- accepted -- Bartram's airplant, Tillandsia de Bartram
  Tillandsia bulbosa Hook. -- accepted -- bulbous airplant, Tillandsia base bulbosa
  Tillandsia fasciculata Sw. -- accepted -- giant airplant, Tillandsia espigas erectas
  Tillandsia festucoides Brongn. ex Mez -- accepted -- fescue airplant, Tillandsia como pasto
  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 -- fuzzywuzzy airplant, Tillandsia peluda
  Tillandsia recurvata (L.) L. -- accepted -- ballmoss, small ballmoss, Tillandsia recta o heno pequeño
  Tillandsia setacea Sw. -- accepted -- southern needleleaf, Tillandsia amacollada
  Tillandsia usneoides (L.) L. -- accepted -- Heno, Spanish moss
  Tillandsia utriculata L. -- accepted -- spreading airplant, Tillandsia base inflada
  Tillandsia valenzuelana A. Rich. -- not accepted -- Tillandsia de Valenzuela
  Tillandsia variabilis Schltdl. -- accepted -- leatherleaf airplant, Tillandsia cambiante
  Tropidia polystachya (Sw.) Ames -- accepted -- Tropidia ramosa, young palm orchid
  Turbinicarpus gautii (L.D. Benson) A.D. Zimmerman -- not accepted -- Biznaga-cono invertido plateada, top cactus
  Vanilla mexicana Mill. -- accepted -- Mexican vanilla, Vainilla mexicana
  Vanilla planifolia Jacks. ex Andrews -- accepted -- Vainilla tlilxóchil, vanilla
  Vanilla pompona Schiede -- accepted -- Vainilla grande, West Indian vanilla
  Washingtonia filifera (Linden ex André) H. Wendl. ex de Bary -- accepted -- California fan palm, Washingtonia de Castilla
  Washingtonia filifera (Linden ex André) H. Wendl. -- not accepted -- California fan palm, Washingtonia de Castilla
  Washingtonia robusta H. Wendl. -- accepted -- Mexican fan palm, Washington fan palm, Washingtonia colorada
  Wullschlaegelia aphylla (Sw.) Rchb. f. -- accepted -- leafless orchid, Orquídea áfila
  Yucca aloifolia L. -- accepted -- aloe yucca, Izote Kukil
  Yucca arizonica McKelvey -- not accepted -- Izote de Arizona
  Yucca baccata Torr. -- accepted -- banana yucca, datil yucca, Izote de dátil
  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 -- beaked yucca, Izote Kikapú
  Yucca schidigera Roezl ex Ortgies -- accepted -- Izote de Ensenada, Mojave yucca, Spanish dagger
  Yucca schottii Engelm. -- not accepted -- Izote de Schott, Schott's yucca
  Yucca thompsoniana Trel. -- accepted -- beaked yucca, Izote cenizo, Thompson's yucca
  Yucca torreyi Shafer -- not accepted -- Izote criollo, torrey yucca, Torrey's yucca
  Yucca treculeana Carrière -- accepted -- Don Quixote's lace, Izote de Chocha, trecul yucca
  Yucca whipplei Torr. -- not accepted -- chaparral yucca, Izote de hoz
   

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