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Publication: Banks, R. C., R. W. McDiarmid, and A. L. Gardner 1987 Checklist of Vertebrates of the United States, the U.S. Territories, and Canada Resource Publication, no. 166 79

ITIS records citing this publication
 
 Kingdom Animalia
  Accipiter Brisson, 1760 -- valid -- Bird Hawks
  Accipiter cooperii (Bonaparte, 1828) -- valid -- Gavilán de Cooper, Cooper's Hawk, epervier de Cooper, Épervier de Cooper
  Accipiter gentilis (Linnaeus, 1758) -- valid -- Gavilán azor, Northern Goshawk, Autour des palombes
  Accipiter gularis (Temminck & Schlegel, 1844) -- valid -- Asiatic Sparrowhawk, Japanese Sparrowhawk
  Accipiter striatus Vieillot, 1808 -- valid -- Gavilán pecho rufo, Sharp-shinned Hawk, epervier brun, Épervier brun
  Accipitridae Vigors, 1824 -- valid -- Eagles, Hawks, Kites, aigles, buses, éperviers
  Acridotheres Vieillot, 1816 -- valid
  Acridotheres cristatellus (Linnaeus, 1758) -- valid -- Crested Myna
  Acrocephalus J. A. Naumann & J. F. Naumann, 1811 -- valid -- Reed-Warblers
  Acrocephalus familiaris (Rothschild, 1892) -- valid -- Millerbird
  Acrocephalus luscinia (Quoy & Gaimard, 1830) -- invalid -- Nightingale Reed-Warbler
  Actitis Illiger, 1811 -- valid -- Spotted Sandpipers
  Actitis hypoleucos (Linnaeus, 1758) -- valid -- Common Sandpiper, Chevalier guignette, Andarríos chico, maçarico-das-rochas, maçarico-ribeirinho
  Actitis macularia (Linnaeus, 1766) -- invalid -- Playero alzacolita, Spotted Sandpiper, chevalier grivelé
  Aegithalidae -- valid -- Bushtits
  Aegolius Kaup, 1829 -- valid -- Saw-whet Owls
  Aegolius acadicus (J. F. Gmelin, 1788) -- valid -- Tecolote afilador, Northern Saw-whet Owl, petite nyctale
  Aegolius funereus (Linnaeus, 1758) -- valid -- Boreal Owl, nyctale de Tengmalm
  Aerodramus Oberholser, 1906 -- valid -- Edible-nest Swiftlets
  Aerodramus spodiopygius (Peale, 1849) -- valid -- White-rumped Swiftlet
  Aerodramus vanikorensis (Quoy & Gaimard, 1832) -- valid -- Gray Swiftlet, Uniform Swiftlet
  Aeronautes Hartert, 1892 -- valid -- White-throated Swifts
  Aeronautes saxatalis (Woodhouse, 1853) -- valid -- White-throated Swift, Vencejo pecho blanco
  Aethia Merrem, 1788 -- valid -- Least Auklets
  Aethia cristatella (Pallas, 1769) -- valid -- Crested Auklet, Alcuela crestada, Starique cristatelle, Mérgulo empenachado, torda-de-penacho
  Aethia pusilla (Pallas, 1811) -- valid -- Least Auklet, Starique minuscule, Mérgulo mínimo, mérgulo-anão
  Aethia pygmaea (J. F. Gmelin, 1789) -- valid -- Whiskered Auklet, Starique pygmée, Mérgulo bigotudo, mérgulo-de-bigode
  Agelaius Vieillot, 1816 -- valid -- Red-winged Blackbirds
  Agelaius humeralis (Vigors, 1827) -- valid -- Tawny-shouldered Blackbird
  Agelaius phoeniceus (Linnaeus, 1766) -- valid -- Red-winged Blackbird, carouge à épaulettes, Tordo sargento
  Agelaius tricolor (Audubon, 1837) -- valid -- Tricolored Blackbird, Tordo tricolor
  Agelaius xanthomus (P. L. Sclater, 1862) -- valid -- Yellow-shouldered Blackbird
  Agkistrodon Palisot de Beauvois, 1799 -- valid -- Copperheads, Cottonmouths, American Moccasins
  Agkistrodon contortrix (Linnaeus, 1766) -- valid -- Copperhead, Cantil cobrizo, Eastern Copperhead
  Agkistrodon piscivorus (Lacépède, 1789) -- valid -- Cottonmouth, Northern Cottonmouth
  Aimophila Swainson, 1837 -- valid -- Aimophila Sparrows
  Aimophila aestivalis (M. H. K. Lichtenstein, 1823) -- invalid -- Bachman's Sparrow
  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 ruficeps (Cassin, 1852) -- valid -- Tohi à calotte fauve, Chingolo coronirrufo, Rufous-crowned Sparrow, Zacatonero corona rufa
  Aix F. Boie, 1828 -- valid -- Wood Ducks
  Aix sponsa (Linnaeus, 1758) -- valid -- Pato arcoiris, Wood Duck, Canard branchu, Pato joyuyo, pato-carolino
  Ajaia Reichenbach, 1853 -- invalid -- American Spoonbills
  Ajaia ajaja (Linnaeus, 1758) -- invalid -- Roseate Spoonbill, Espátula rosada
  Alauda Linnaeus, 1758 -- valid -- Skylarks
  Alauda arvensis Linnaeus, 1758 -- valid -- Eurasian Skylark, Sky Lark
  Alaudidae Vigors, 1825 -- valid -- Larks
  Alca Linnaeus, 1758 -- valid -- Razorbills
  Alca torda Linnaeus, 1758 -- valid -- Razorbill, Petit Pingouin, Alca común, torda-mergulheira
  Alcedinidae -- valid -- Kingfishers
  Alces Gray, 1821 -- valid -- moose, Old World elk
  Alces alces (Linnaeus, 1758) -- valid -- moose, orignal, Eurasian Elk
  Alectoris Kaup, 1829 -- valid -- Chukars
  Alectoris chukar (J. E. Gray, 1830) -- valid -- Perdrix choukar, Perdiz chúcar, perdiz-chucar, Chukar, Perdiz chukar, Chukar Partridge
  Alle Link, 1806 -- valid -- Dovekies
  Alle alle (Linnaeus, 1758) -- valid -- Dovekie, Little Auk, Mergule nain, Mérgulo atlántico, torda-miúda
  Alligator Cuvier, 1807 -- valid -- Alligators
  Alligatoridae -- valid -- Caimans, Alligators
  Alopex Kaup, 1829 -- invalid -- Arctic foxes
  Alopex lagopus (Linnaeus, 1758) -- invalid -- Arctic Fox, renard arctique
  Alsophis Fitzinger, 1843 -- valid -- West Indian Racers
  Alsophis portoricensis Reinhardt and Lütken, 1862 -- invalid -- Puerto Rican Racer
  Alsophis sancticrucis Cope, 1862 -- invalid -- St. Croix Racer
  Amandava Blyth, 1836 -- valid -- Avadavats
  Amandava amandava (Linnaeus, 1758) -- valid -- Red Avadavat
  Amazilia R. Lesson, 1843 -- valid -- Amazilias
  Amazilia beryllina (Deppe, 1830) -- invalid -- Berylline Hummingbird, Colibrí berilo
  Amazilia tzacatl (de la Llave, 1833) -- valid -- Rufous-tailed Hummingbird, Colibrí cola rojiza
  Amazilia violiceps (Gould, 1859) -- invalid -- Violet-crowned Hummingbird, Colibrí corona violeta
  Amazilia yucatanensis (S. Cabot, 1845) -- valid -- Buff-bellied Hummingbird, Colibrí yucateco
  Amazona Lesson, 1830 -- valid -- Amazon Parrots
  Amazona ventralis (Statius Muller, 1776) -- valid -- Hispaniolan Amazon, Hispaniolan Parrot
  Amazona viridigenalis (Cassin, 1853) -- valid -- Red-crowned Amazon, Red-crowned Parrot, Loro tamaulipeco
  Amazona vittata (Boddaert, 1783) -- valid -- Puerto Rican Amazon, Puerto Rican Parrot
  Ambystoma californiense Gray, 1853 -- valid -- California Tiger Salamander
  Ambystoma cingulatum Cope, 1868 -- valid -- Flatwoods Salamander, Frosted Flatwoods Salamander
  Ambystoma jeffersonianum (Green, 1827) -- valid -- Jefferson Salamander
  Ambystoma nothagenes Kraus, 1985 -- invalid -- Kelley's Island Salamander
  Ambystoma platineum Cope, 1868 -- invalid -- Silvery Salamander
  Ambystoma tremblayi Comeau, 1943 -- invalid -- Tremblay's Salamander
  Ameiva Meyer, 1795 -- valid -- Ground Lizards, Ameivas
  Ameiva ameiva (Linnaeus, 1758) -- valid -- Neotropical Ameiva, Amazon Racerunner, Giant Ameiva, South American Ground Lizard, Zandolie
  Ameiva exsul Cope, 1862 -- invalid -- Puerto Rican Ground Lizard
  Ameiva polops Cope, 1862 -- invalid -- St. Croix Ground Lizard
  Ammodramus Swainson, 1827 -- valid -- Grassland Sparrows
  Ammodramus caudacutus (J. F. Gmelin, 1788) -- invalid -- Saltmarsh Sharp-tailed Sparrow, Gorrión cola aguda, Saltmarsh Sparrow
  Ammodramus leconteii (Audubon, 1844) -- invalid -- Bruant de LeConte, Gorrión de Le Conte, Le Conte's Sparrow
  Ammodramus maritimus (A. Wilson, 1811) -- invalid -- Seaside Sparrow, Gorrión costero
  Ammodramus savannarum (J. F. Gmelin, 1789) -- valid -- Chingolo saltamontes, escrevedeira-dos-gafanhotos, Grasshopper Sparrow, bruant sauterelle, Gorrión chapulín
  Ammospermophilus Merriam, 1892 -- valid -- Antelope Squirrels
  Ammospermophilus harrisii (Audubon and Bachman, 1854) -- valid -- Harris' antelope squirrel, Ardilla-antilope de Sonora, Harris's Antelope Squirrel
  Ammospermophilus interpres (Merriam, 1890) -- valid -- Ardilla-antilope texana, Texas Antelope Squirrel
  Ammospermophilus leucurus (Merriam, 1889) -- valid -- Ardilla-antílope cola blanca, White-tailed Antelope Squirrel
  Ammospermophilus nelsoni (Merriam, 1893) -- valid -- San Joaquin antelope ground squirrel, San Joaquin antelope squirrel, Nelson's Antelope Squirrel, Nelson's antelope ground squirrel
  Ammotragus Blyth, 1840 -- valid -- Barbary sheep
  Ammotragus lervia (Pallas, 1777) -- valid -- aoudad, Barbary sheep, Barbary Sheep
  Amphisbaena bakeri Stejneger, 1904 -- valid -- Puerto Rican Many-ringed Worm Lizard, Baker's Worm Lizard
  Amphisbaena caeca Cuvier, 1829 -- valid -- Puerto Rican Worm Lizard, Common Puerto Rican Worm Lizard, Blind Worm Lizard
  Amphisbaena fenestrata (Cope, 1861) -- valid -- Virgin Islands Worm Lizard, Cope's Worm Lizard
  Amphisbaena schmidti Gans, 1964 -- valid -- Schmidt's Worm Lizard, Puerto Rican Dusky Worm Lizard
  Amphisbaena xera Thomas, 1966 -- valid -- North American Worm Lizard, Puerto Rican Dryland Worm Lizard, Puerto Rican Xeric Worm Lizard, Dry Worm Lizard
  Amphisbaenia -- valid -- Worm Lizards, Amphisbaenians
  Amphisbaenidae Gray, 1865 -- valid -- Tropical Worm Lizards, Amphisbaenids
  Amphispiza Coues, 1874 -- valid -- Desert Sparrows
  Amphispiza belli (Cassin, 1850) -- invalid -- Sage Sparrow, Zacatonero de artemisa
  Amphispiza bilineata (Cassin, 1850) -- valid -- Bruant à gorge noire, Chingolo gorjinegro, escrevedeira-de-garganta-preta, Zacatonero garganta negra, Black-throated Sparrow
  Amphispiza quinquestriata (P. L. Sclater & Salvin, 1868) -- invalid -- Bruant pentaligne, Chingolo cincorrayas, Five-striped Sparrow, Zacatonero cinco rayas
  Anas Linnaeus, 1758 -- valid -- Dabbling Ducks
  Anas acuta Linnaeus, 1758 -- valid -- Pato golondrino, Northern Pintail, Canard pilet, Ánade rabudo norteño, arrabio
  Anas americana J. F. Gmelin, 1789 -- invalid -- Pato chalcuán, American Wigeon, canard d'Amérique
  Anas bahamensis Linnaeus, 1758 -- valid -- White-cheeked Pintail, Canard des Bahamas, Ánade gargantillo, marreca-toicinho
  Anas clypeata Linnaeus, 1758 -- invalid -- Pato cucharón-norteño, Northern Shoveler, canard souchet
  Anas crecca Linnaeus, 1758 -- valid -- Eurasian Teal, Cerceta ala verde, Green-winged Teal, Sarcelle d'hiver, Cerceta común, marrequinha, Common Teal
  Anas cyanoptera Vieillot, 1816 -- invalid -- Cerceta canela, Cinnamon Teal, sarcelle cannelle
  Anas discors Linnaeus, 1766 -- invalid -- Cerceta ala azul, Blue-winged Teal, sarcelle à ailes bleues
  Anas falcata Georgi, 1775 -- invalid -- Falcated Duck, Falcated Teal
  Anas formosa Georgi, 1775 -- invalid -- Baikal Teal
  Anas fulvigula Ridgway, 1874 -- valid -- Mottled Duck, Pato tejano, Canard brun, Ánade moteado, pato-da-flórida
  Anas laysanensis Rothschild, 1892 -- valid -- Laysan Duck, Canard de Laysan, Ánade de Laysán, pato-de-laysan
  Anas oustaleti Salvadori, 1894 -- invalid -- Marianas Mallard, Mariana Mallard
  Anas penelope Linnaeus, 1758 -- invalid -- Pato silbón, Eurasian Wigeon, canard siffleur
  Anas platyrhynchos Linnaeus, 1758 -- valid -- Pato de collar, Mallard, Canard colvert, Ánade azulón, pato-real
  Anas poecilorhyncha J. R. Forster, 1781 -- valid -- Indian Spot-billed Duck, Spot-billed Duck, Canard à bec tacheté, Ánade picopinto indio, pato-de-bico-pintado
  Anas querquedula Linnaeus, 1758 -- invalid -- Cerceta ceja blanca, Garganey, sarcelle d'été
  Anas rubripes Brewster, 1902 -- valid -- American Black Duck, Canard noir, Ánade sombrío, pato-escuro-americano
  Anas strepera Linnaeus, 1758 -- invalid -- Pato friso, Gadwall, canard chipeau
  Anas superciliosa J. F. Gmelin, 1789 -- valid -- Pacific Black Duck, Gray Duck, Canard à sourcils, Ánade cejudo, pato-de-sobrancelhas
  Anas wyvilliana P. L. Sclater, 1878 -- valid -- Koloa piwai, Koloa-maoli, Koloa maoli, Hawaiian Duck, Koloa, Canard des Hawaï, Ánade hawaiano, pato-havaiano
  Anatidae Leach, 1820 -- valid -- Ducks, Geese, Swans, canards, cygnes, oies
  Anguidae -- valid -- Alligator Lizards, Anguid Lizards, Anguids, Galliwasps, Glass Lizards
  Anhinga Brisson, 1760 -- valid -- Anhingas
  Anhinga anhinga (Linnaeus, 1766) -- valid -- Anhinga, Anhinga americana, Anhinga d'Amérique
  Anhingidae Reichenbach, 1849 -- valid -- Darters, Anhingas
  Anniella Gray, 1852 -- valid -- Legless Lizards, North American Legless Lizards, American legless lizards, California legless lizards
  Anniella nigra Fischer, 1885 -- invalid
  Anniella pulchra Gray, 1852 -- valid -- Lagartija sin patas californiana, California Legless Lizard, Silvery Legless Lizard, Northern Legless Lizard
  Anolis Daudin, 1802 -- valid -- Anoles, Western Antillean Anoles
  Anolis acutus Hallowell, 1857 -- valid -- St. Croix Anole, Sharp Anole, Saint Croix's Anole
  Anolis carolinensis Voigt in Cuvier and Voigt, 1832 -- valid -- Green Anole, Anolis verde, anole vert
  Anolis cooki Grant, 1931 -- valid -- Cook's Anole, Cook's Pallid Anole
  Anolis cristatellus A. M. C. Duméril and Bibron, 1837 -- valid -- Crested Anole, Puerto Rican Crested Anole, Common Puerto Rican Anole
  Anolis cuvieri Merrem, 1820 -- valid -- Puerto Rican Giant Anole, Cuvier's Anole, Green Giant Anole
  Anolis cybotes Cope, 1862 -- valid -- Large-headed Anole, Hispaniolan Stout Anole, Largehead Anole
  Anolis distichus Cope, 1861 -- valid -- Bark Anole, Hispaniolan Gracile Anole
  Anolis equestris Merrem, 1820 -- valid -- Knight Anole
  Anolis evermanni Stejneger, 1904 -- valid -- Emerald Anole, Small Green Anole, Evermann's Anole
  Anolis garmani Stejneger, 1899 -- valid -- Jamaican Giant Anole, Jamaican Anole
  Anolis gundlachi W. C. H. Peters, 1876 -- valid -- Yellow-chinned Anole, Gundlach's Anole, Yellow-bearded Anole
  Anolis krugi W. C. H. Peters, 1876 -- valid -- Upland Grass Anole, Olive Bush Anole, Krug's Anole, Orange Dewlap Anole
  Anolis longiceps K. P. Schmidt, 1919 -- valid -- Navassa Anole
  Anolis monensis Stejneger, 1904 -- valid -- Mona Anole
  Anolis occultus Williams and Rivero, 1965 -- valid -- Pygmy Anole, Puerto Rican Twig Anole, Limestone Anole, Dwarf Anole
  Anolis poncensis Stejneger, 1904 -- valid -- Dryland Grass Anole, Ponce Small-fanned Anole, Ponce Anole
  Anolis porcatus Gray, 1840 -- valid -- Cuban Green Anole
  Anolis pulchellus A. M. C. Duméril and Bibron, 1837 -- valid -- Common Grass Anole, Puerto Rican Anole, Puerto Rican Bush Anole, Snake Anole
  Anolis sagrei Cocteau in A. M. C. Duméril and Bibron, 1837 -- valid -- Brown Anole, Anolis café, Cuban Brown Anole
  Anolis stratulus Cope, 1861 -- valid -- Barred Anole, Spotted Anole, St. Thomas Anole, Banded Anole
  Anous Stephens, 1826 -- valid -- Noddys
  Anous minutus F. Boie, 1844 -- valid -- Black Noddy, Charrán-bobo negro, Noddi noir, Tiñosa menuda, trinta-réis-preto, tinhosa-de-barrete
  Anous stolidus (Linnaeus, 1758) -- valid -- Brown Noddy, Charrán-bobo café, Noddi brun, Tiñosa boba, trinta-réis-escuro, tinhosa
  Anous tenuirostris (Temminck, 1823) -- valid -- Lesser Noddy, Sooty Noddy, Noddi marianne, Tiñosa picofina, tinhosa-pequena
  Anser Brisson, 1760 -- valid -- Bean Geese
  Anser albifrons (Scopoli, 1769) -- valid -- Ganso careto-mayor, Greater White-fronted Goose, Oie rieuse, Ánsar careto, ganso-de-testa-branca
  Anser brachyrhynchus Baillon, 1834 -- valid -- Pink-footed Goose, Oie à bec court, Ánsar piquicorto, ganso-de-bico-curto
  Anser erythropus (Linnaeus, 1758) -- valid -- Lesser White-fronted Goose, Oie naine, Ánsar chico, ganso-pequeno
  Anser fabalis (Latham, 1787) -- valid -- Bean Goose, Taiga Bean Goose, Oie des moissons, Ánsar campestre, ganso-campestre, Taiga Bean-Goose
  Anseriformes -- valid -- Ducks, Geese, Screamers, Swans, Waterfowl, canards, cygnes, oies, sauvagine
  Anthracothorax F. Boie, 1831 -- valid -- Mangos
  Anthracothorax dominicus (Linnaeus, 1766) -- valid -- Antillean Mango
  Anthracothorax viridis (Audebert & Vieillot, 1801) -- valid -- Green Mango
  Anthus Bechstein, 1805 -- valid -- Pipits
  Anthus cervinus (Pallas, 1811) -- valid -- Red-throated Pipit, Bisbita garganta roja
  Anthus gustavi Swinhoe, 1863 -- valid -- Pechora Pipit
  Anthus hodgsoni Richmond, 1907 -- valid -- Olive Tree-Pipit, Olive-backed Pipit
  Anthus spinoletta (Linnaeus, 1758) -- valid -- Water Pipit
  Anthus spragueii (Audubon, 1844) -- valid -- Sprague's Pipit, Bisbita llanera
  Anthus trivialis (Linnaeus, 1758) -- valid -- Brown Tree-Pipit, Tree Pipit
  Antilocapra Ord, 1818 -- valid
  Antilocapra americana (Ord, 1815) -- valid -- pronghorn, Berrendo, Pronghorn
  Antilocapra americana americana (Ord, 1815) -- valid
  Antrozous H. Allen, 1862 -- valid -- pallid bats
  Antrozous pallidus (LeConte, 1856) -- valid -- Murciélago-desértico norteño, Pallid Bat
  Anura -- valid -- Frogs, perereca, rã, sapo, crapauds, grenouilles, Toads
  Apalone ferox (Schneider, 1783) -- valid -- Florida Softshell Turtle, Florida Softshell
  Apalone mutica (Le Sueur, 1827) -- valid -- Smooth Softshell, Smooth Softshell Turtle
  Aphelocoma Cabanis, 1851 -- valid -- Scrub Jays
  Aphelocoma coerulescens (Bosc, 1795) -- valid -- Scrub Jay, Chara pecho rayado, Florida Scrub Jay, Florida Scrub-Jay
  Aphelocoma ultramarina (Bonaparte, 1825) -- valid -- Gray-breasted Jay, Chara pecho gris, Mexican Jay
  Aphriza Audubon, 1839 -- invalid -- Surfbirds
  Aphriza virgata (J. F. Gmelin, 1789) -- invalid -- Surfbird, Playero roquero, Bécasseau du ressac
  Aplodontia Richardson, 1829 -- valid -- Mountain Beaver
  Aplodontia rufa (Rafinesque, 1817) -- valid -- Mountain Beaver, Sewellel
  Aplodontiidae Brandt, 1855 -- valid -- Mountain Beavers
  Aplonis Gould, 1836 -- valid
  Apodidae -- valid -- Swifts
  Apodiformes -- valid -- Swifts, Hummingbirds
  Apus Scopoli, 1777 -- valid -- Common Swifts
  Apus apus (Linnaeus, 1758) -- valid -- Common Swift
  Apus pacificus (Latham, 1801) -- valid -- Fork-tailed Swift, Pacific Swift
  Aquila Brisson, 1760 -- valid -- Golden Eagles
  Aquila chrysaetos (Linnaeus, 1758) -- valid -- Águila real, Golden Eagle, Aigle royal
  Aramidae -- valid -- Limpkins, Limpkin
  Aramus Vieillot, 1816 -- valid -- Limpkins
  Aramus guarauna (Linnaeus, 1766) -- valid -- Limpkin, Carao
  Aratinga Spix, 1824 -- valid -- Parakeets
  Aratinga canicularis (Linnaeus, 1758) -- valid -- Orange-fronted Parakeet, Perico frente naranja
  Aratinga chloroptera (Souance, 1856) -- valid -- Hispaniolan Parakeet
  Aratinga pertinax (Linnaeus, 1758) -- valid -- Brown-throated Parakeet
  Arborimus Taylor, 1915 -- valid -- Tree Voles
  Arborimus albipes (Merriam, 1901) -- valid -- White-footed Vole
  Arborimus longicaudus (True, 1890) -- valid -- Red Tree Vole, Reddish Tree Mouse
  Archilochus Reichenbach, 1854 -- valid -- Ruby-throated Hummingbirds
  Archilochus alexandri (Bourcier & Mulsant, 1846) -- valid -- Black-chinned Hummingbird, Colibrí barba negra
  Archilochus colubris (Linnaeus, 1758) -- valid -- Colibrí garganta rubí, Ruby-throated Hummingbird, colibri à gorge rubis
  Arctocephalus É. Geoffroy Saint-Hilaire and F. Cuvier, 1826 -- valid -- southern fur seals
  Arctocephalus townsendi Merriam, 1897 -- invalid -- Guadalupe Fur Seal, Lobo-fino de Guadalupe
  Ardea Linnaeus, 1758 -- valid -- Great Herons
  Ardea herodias Linnaeus, 1758 -- valid -- Garza morena, Great Blue Heron, Grand Héron
  Ardeidae Leach, 1820 -- valid -- Bitterns, Egrets, Herons
  Arenaria Brisson, 1760 -- valid -- Turnstones
  Arenaria interpres (Linnaeus, 1758) -- valid -- Vuelvepiedras rojizo, Ruddy Turnstone, Tournepierre à collier, Vuelvepiedras común, vira-pedras, rola-do-mar
  Arenaria melanocephala (Vigors, 1829) -- valid -- Black Turnstone, Vuelvepiedras negro, Tournepierre noir, Vuelvepiedras oscuro, vira-pedras-preto
  Aristelliger Cope, 1862 -- valid -- Croaking Geckos
  Aristelliger cochranae Grant, 1931 -- valid -- Cochran's Croaking Gecko
  Arizona Kennicott in Baird, 1859 -- valid -- Glossy Snakes
  Arizona elegans Kennicott in Baird, 1859 -- valid -- Glossy Snake, Culebra brillante
  Arremonops Ridgway, 1896 -- valid -- Olive Sparrows
  Arremonops rufivirgatus (Lawrence, 1851) -- valid -- Tohi olive, Cerquero oliváceo, Olive Sparrow, Rascador oliváceo
  Arrhyton Günther, 1858 -- valid -- West Indian Garden Snakes
  Arrhyton exiguum (Cope, 1863) -- invalid -- Puerto Rican Garden Snake
  Artamidae Vigors, 1825 -- valid -- Woodswallows
  Artamus Vieillot, 1816 -- valid -- Wood-Swallows
  Artibeus Leach, 1821 -- valid -- fruit-eating bats
  Artibeus hartii Thomas, 1892 -- invalid -- Velvety Fruit-eating Bat, Hart's Fruit-eating Bat
  Artibeus jamaicensis Leach, 1821 -- valid -- Murciélago-frutero de Jamaica, Jamaican Fruit-eating Bat
  Asio Brisson, 1760 -- valid -- Eared Owls
  Asio flammeus (Pontoppidan, 1763) -- valid -- Búho cuerno corto, Short-eared Owl, hibou des marais
  Asio otus (Linnaeus, 1758) -- valid -- Búho cara café, Long-eared Owl, hibou moyen-duc
  Athene F. Boie, 1822 -- valid -- Burrowing Owls
  Athene cunicularia (Molina, 1782) -- valid -- Tecolote llanero, Burrowing Owl, chevêche des terriers
  Atthis Reichenbach, 1854 -- invalid -- Bumblebee Hummingbirds
  Atthis heloisa (R. Lesson & Delattre, 1839) -- invalid -- Bumblebee Hummingbird, Zumbador mexicano
  Auriparus S. F. Baird, 1864 -- valid
  Auriparus flaviceps (Sundevall, 1850) -- valid -- Verdin, Baloncillo
  Aves -- valid -- Birds, oiseaux
  Aythya F. Boie, 1822 -- valid -- Diving Ducks
  Aythya affinis (Eyton, 1838) -- valid -- Pato boludo-menor, Lesser Scaup, Petit Fuligule, Porrón bola, negrelho-americano
  Aythya americana (Eyton, 1838) -- valid -- Pato cabeza roja, Redhead, Fuligule à tête rouge, Porrón americano, zarro-americano
  Aythya collaris (Donovan, 1809) -- valid -- Pato pico anillado, Ring-necked Duck, Fuligule à collier, Porrón acollarado, caturro
  Aythya ferina (Linnaeus, 1758) -- valid -- Common Pochard, Fuligule milouin, Porrón europeo, zarro
  Aythya fuligula (Linnaeus, 1758) -- valid -- Tufted Duck, Fuligule morillon, Porrón moñudo, negrinha
  Aythya marila (Linnaeus, 1761) -- valid -- Pato boludo-mayor, Greater Scaup, Fuligule milouinan, Porrón bastardo, negrelho
  Aythya valisineria (A. Wilson, 1814) -- valid -- Pato coacoxtle, Canvasback, Fuligule à dos blanc, Porrón coacoxtle, zarro-grande
  Baeolophus inornatus (Gambel, 1845) -- valid -- Plain Titmouse, Carbonero sencillo, Oak Titmouse
  Baiomys True, 1894 -- valid -- Pygmy Mice, American Pygmy Mice
  Balaena Linnaeus, 1758 -- valid -- right whales
  Balaena mysticetus Linnaeus, 1758 -- valid -- black right whale, bowhead whale, Bowhead, baleine boréale, Greenland whale
  Balaenidae Gray, 1821 -- valid -- bowhead whales, right whales
  Balaenoptera Lacépède, 1804 -- valid -- rorquals, finback whales, baleen whales
  Balaenoptera acutorostrata Lacépède, 1804 -- valid -- Common Minke Whale, Minke Whale, northern minke whale, Ballena menor, petit rorqual
  Balaenoptera borealis Lesson, 1828 -- valid -- Sei Whale, Ballena de Sei, rorqual boréal
  Balaenoptera edeni Anderson, 1879 -- valid -- Eden's whale, Ballena tropical, Bryde's whale
  Balaenoptera musculus (Linnaeus, 1758) -- valid -- Blue Whale, Ballena azul, rorqual bleu
  Balaenoptera physalus (Linnaeus, 1758) -- valid -- Fin Whale, finback whale, rorqual commun, Ballena de aleta
  Balaenopteridae Gray, 1864 -- valid -- rorquals
  Bartramia R. Lesson, 1831 -- valid -- Upland Sandpipers
  Bartramia longicauda (Bechstein, 1812) -- valid -- Zarapito ganga, Upland Sandpiper, Maubèche des champs, Correlimos batitú, maçarico-do-campo
  Basileuterus Cabanis, 1849 -- valid -- Basileuterine Warblers
  Basileuterus rufifrons (Swainson, 1838) -- valid -- Chipe gorra rufa, Rufous-capped Warbler, Paruline à calotte rousse
  Basiliscus Laurenti, 1768 -- valid -- Basilisks
  Basiliscus vittatus Wiegmann, 1828 -- valid -- Brown Basilisk, Basilisco rayado
  Bassariscus Coues, 1887 -- valid -- ringtails
  Bassariscus astutus (Lichtenstein, 1830) -- valid -- Ringtail, Cacomixtle norteño
  Batrachoseps Bonaparte, 1839 -- valid -- Slender Salamanders
  Batrachoseps aridus Brame, 1970 -- invalid -- Desert Slender Salamander
  Batrachoseps attenuatus (Eschscholtz, 1833) -- valid -- California Slender Salamander
  Batrachoseps campi Marlow, Brode and Wake, 1979 -- valid -- Inyo Mountains Slender Salamander, Inyo Mountains Salamander
  Batrachoseps nigriventris Cope, 1869 -- valid -- Black-bellied Slender Salamander
  Batrachoseps simatus Brame and Murray, 1968 -- valid -- Kern Canyon Slender Salamander
  Batrachoseps stebbinsi Brame and Murray, 1968 -- valid -- Tehachapi Slender Salamander
  Batrachoseps wrighti (Bishop, 1937) -- valid -- Oregon Slender Salamander
  Berardius Duvernoy, 1851 -- valid -- giant bottle-nosed whales, giant beaked whales
  Berardius arnuxii Duvernoy, 1851 -- valid -- Arnoux's Beaked Whale
  Berardius bairdii Stejneger, 1883 -- valid -- north Pacific bottle-nosed whale, Baird's Beaked Whale
  Bison C. H. Smith, 1827 -- valid -- bison
  Bison bison (Linnaeus, 1758) -- valid -- American bison, bison, Bisonte americano, American Bison
  Bison bison bison (Linnaeus, 1758) -- invalid -- plains bison, bison
  Blarina Gray, 1838 -- valid -- American short-tailed shrews
  Blarina brevicauda (Say, 1823) -- valid -- mole shrew, short-tailed shrew, grande musaraigne, Northern Short-tailed Shrew
  Blarina carolinensis (Bachman, 1837) -- valid -- Southern Short-tailed Shrew
  Blarina hylophaga Elliot, 1899 -- valid -- Elliot's Short-tailed Shrew
  Bogertophis rosaliae (Mocquard, 1899) -- valid -- Baja California Rat Snake, Baja California Ratsnake, Culebra-ratonera de Baja California
  Boidae Gray, 1825 -- valid -- Boas, Boids
  Boiga Fitzinger, 1826 -- valid -- Boigas, Catsnakes
  Boiga irregularis (Bechstein, 1802) -- valid -- Brown Tree Snake, Brown Treesnake, Brown Cat Snake
  Bombycilla Vieillot, 1808 -- valid -- Waxwings
  Bombycilla cedrorum Vieillot, 1808 -- valid -- Ampelis chinito, Cedar Waxwing, jaseur d'Amérique
  Bombycilla garrulus (Linnaeus, 1758) -- valid -- Bohemian Waxwing, jaseur boréal
  Bombycillidae Swainson, 1831 -- valid -- Waxwings
  Bonasa Stephens, 1819 -- valid -- Ruffed Grouse
  Bonasa umbellus (Linnaeus, 1766) -- valid -- Grévol engolado, tetraz-de-colar, Ruffed Grouse, gélinotte huppée
  Botaurus Stephens, 1819 -- valid -- Brown Bitterns
  Botaurus lentiginosus (Rackett, 1813) -- valid -- Avetoro norteño, American Bittern, Butor d'Amérique
  Bovidae Gray, 1821 -- valid -- antelopes, cattle, goats, sheep, bovids
  Brachyphylla Gray, 1834 -- valid -- Antillean fruit-eating bats
  Brachyphylla cavernarum Gray, 1834 -- valid -- Antillean Fruit-eating Bat
  Branta Scopoli, 1769 -- valid -- Brent Geese
  Branta bernicla (Linnaeus, 1758) -- valid -- Brant Goose, Brent Goose, Ganso de collar, Brant, Bernache cravant, Barnacla carinegra, ganso-de-faces-pretas
  Branta canadensis (Linnaeus, 1758) -- valid -- Ganso canadiense, Canada Goose, Bernache du Canada, Barnacla canadiense grande, ganso-do-canadá
  Branta leucopsis (Bechstein, 1803) -- valid -- Barnacle Goose, Bernache nonnette, Barnacla cariblanca, ganso-marisco
  Brotogeris Vigors, 1825 -- valid -- Canary-winged Parakeets
  Brotogeris versicolurus (Statius Muller, 1776) -- valid -- White-winged Parakeet, Canary-winged Parakeet
  Bubo Duméril, 1805 -- valid -- Horned Owls
  Bubo virginianus (J. F. Gmelin, 1788) -- valid -- Búho cornudo, Great Horned Owl, grand-duc d'Amérique
  Bubulcus Bonaparte, 1855 -- valid -- Cattle Egrets
  Bubulcus ibis (Linnaeus, 1758) -- valid -- Garza ganadera, Cattle Egret, Héron garde-boeufs, Western Cattle Egret
  Bucephala S. F. Baird, 1858 -- valid -- Goldeneyes
  Bucephala albeola (Linnaeus, 1758) -- valid -- Pato monja, Bufflehead, Petit Garrot, Porrón albeola, olho-dourado-de-touca
  Bucephala clangula (Linnaeus, 1758) -- valid -- Pato chillón, Common Goldeneye, Garrot à oeil d'or, Porrón osculado, olho-dourado
  Bucephala islandica (J. F. Gmelin, 1789) -- valid -- Barrow's Goldeneye, Garrot d'Islande, Porrón islándico, olho-dourado-da-islândia
  Bufo alvarius Girard in Baird, 1859 -- invalid -- Sonoran Desert Toad, Colorado River Toad, Sapo del desierto-sonorense
  Bufo americanus Holbrook, 1836 -- invalid -- American Toad, crapaud d'Amérique
  Bufo boreas Baird and Girard, 1852 -- invalid -- Western Toad, Sapo del Oeste
  Bufo canorus Camp, 1916 -- invalid -- Yosemite Toad
  Bufo cognatus Say in James, 1822 -- invalid -- Great Plains Toad, Sapo de la gran planicie
  Bufo debilis Girard, 1854 -- invalid -- Green Toad, Sapo verde
  Bufo exsul Myers, 1942 -- invalid -- Black Toad
  Bufo hemiophrys Cope, 1886 -- invalid -- Canadian Toad
  Bufo houstonensis Sanders, 1953 -- invalid -- Houston Toad
  Bufo marinus (Linnaeus, 1758) -- invalid -- Giant Toad, Sapo gigante, Marine Toad, Cane Toad
  Bufo microscaphus Cope, 1867 -- invalid -- Sapo del suroeste, Arizona Toad, Southwestern Toad
  Bufo punctatus Baird and Girard, 1852 -- invalid -- Red-spotted Toad, Sapo manchas rojas
  Bufo quercicus Holbrook, 1840 -- invalid -- Oak Toad
  Bufo retiformis Sanders and Smith, 1951 -- invalid -- Sonoran Green Toad, Sapo verde-sonorense
  Bufo speciosus Girard, 1854 -- invalid -- Texas Toad, Sapo texano
  Bufo terrestris (Bonnaterre, 1789) -- invalid -- Southern Toad
  Bufo valliceps Wiegmann, 1833 -- invalid -- Sapo del golfo, Gulf Coast Toad
  Bufo woodhousii Girard, 1854 -- invalid -- Woodhouse's Toad
  Bulweria Bonaparte, 1843 -- valid -- Bulwer's Petrels
  Bulweria fallax Jouanin, 1955 -- valid -- Jouanin's Petrel, Pétrel de Jouanin
  Burhinidae Mathews, 1912 -- valid -- Thick-knees, Stone-curlews
  Burhinus Illiger, 1811 -- valid -- Thick-knees
  Burhinus bistriatus (Wagler, 1829) -- valid -- Double-striped Thick-knee, Alcaraván americano, Oedicnème bistrié, Alcaraván venezolano, téu-téu-da-savana
  Buteo Lacepede, 1799 -- valid -- Buteonine Hawks
  Buteo albicaudatus Vieillot, 1816 -- valid -- White-tailed Hawk, Aguililla cola blanca, Buse à queue blanche
  Buteo albonotatus Kaup, 1847 -- valid -- Zone-tailed Hawk, Aguililla aura, Buse à queue barrée
  Buteo brachyurus Vieillot, 1816 -- valid -- Short-tailed Hawk, Aguililla cola corta, Buse à queue courte
  Buteo jamaicensis (Gmelin, 1788) -- valid -- Aguililla cola roja, Red-tailed Hawk, Buse à queue rousse
  Buteo lagopus (Pontoppidan, 1763) -- valid -- Aguililla ártica, Rough-legged Hawk, Roughleg, Buse pattue, Rough-legged Buzzard
  Buteo lineatus (Gmelin, 1788) -- valid -- Aguililla pecho rojo, Red-shouldered Hawk, Buse à épaulettes
  Buteo magnirostris (Gmelin, 1788) -- invalid -- Roadside Hawk, Buse à gros bec
  Buteo platypterus (Vieillot, 1823) -- valid -- Aguililla ala ancha, Broad-winged Hawk, Petite Buse
  Buteo regalis (G. R. Gray, 1844) -- valid -- Ferruginous Hawk, Aguililla real, Buse rouilleuse
  Buteo solitarius Peale, 1848 -- valid -- Hawaiian Hawk, Buse d'Hawaï, 'Io
  Buteo swainsoni Bonaparte, 1838 -- valid -- Aguililla de Swainson, Swainson's Hawk, Buse de Swainson
  Buteogallus Lesson, 1830 -- valid -- Black-Hawks
  Buteogallus anthracinus (Deppe, 1830) -- valid -- Common Black-Hawk, Aguililla-negra menor, Common Black Hawk, Buse noire
  Butorides Blyth, 1852 -- valid -- Green-backed Herons
  Butorides striatus (Linnaeus, 1758) -- invalid -- Green-backed Heron
  Cacatua Vieillot, 1817 -- valid -- Cockatoos
  Cacatua galerita (Latham, 1790) -- valid -- Sulphur-crested Cockatoo
  Caiman crocodilus (Linnaeus, 1758) -- valid -- Common Caiman, Spectacled Caiman
  Calamospiza Bonaparte, 1838 -- valid -- Lark Buntings
  Calamospiza melanocorys Stejneger, 1885 -- valid -- Chingolo albinegro, Lark Bunting, bruant noir et blanc, Gorrión ala blanca
  Calcarius Bechstein, 1802 -- valid -- Longspurs
  Calcarius lapponicus (Linnaeus, 1758) -- valid -- Escribano ártico, Lapland Longspur, bruant lapon
  Calcarius mccownii (Lawrence, 1851) -- invalid
  Calcarius ornatus (J. K. Townsend, 1837) -- valid -- Chestnut-collared Longspur, Escribano collar castaño
  Calcarius pictus (Swainson, 1832) -- valid -- Smith's Longspur, bruant de Smith
  Calidris Merrem, 1804 -- valid -- Stints
  Calidris acuminata (Horsfield, 1821) -- valid -- Sharp-tailed Sandpiper, Bécasseau à queue pointue, Correlimos acuminado, pilrito-acuminado
  Calidris alba (Pallas, 1764) -- valid -- Playero blanco, Sanderling, Bécasseau sanderling, Correlimos tridáctilo, maçarico-branco, pilrito-das-praias
  Calidris alpina (Linnaeus, 1758) -- valid -- Playero dorso rojo, Dunlin, Bécasseau variable, Correlimos común, pilrito-de-peito-preto
  Calidris bairdii (Coues, 1861) -- valid -- Playero de Baird, Baird's Sandpiper, Bécasseau de Baird, Correlimos de Baird, maçarico-de-bico-fino, pilrito-de-bico-fino
  Calidris canutus (Linnaeus, 1758) -- valid -- Playero canuto, Red Knot, Bécasseau maubèche, Correlimos gordo, maçarico-de-papo-vermelho, seixoeira
  Calidris ferruginea (Pontoppidan, 1763) -- valid -- Curlew Sandpiper, Bécasseau cocorli, Correlimos zarapitín, pilrito-de-bico-comprido
  Calidris fuscicollis (Vieillot, 1819) -- valid -- Playero rabadilla blanca, White-rumped Sandpiper, Bécasseau à croupion blanc, Correlimos culiblanco, maçarico-de-sobre-branco, pilrito-de-sobre-branco
  Calidris maritima (Brünnich, 1764) -- valid -- Purple Sandpiper, Bécasseau violet, Correlimos oscuro, pilrito-escuro
  Calidris mauri (Cabanis, 1857) -- valid -- Playero occidental, Western Sandpiper, Bécasseau d'Alaska, Correlimos de Alaska, pilrito-miúdo
  Calidris melanotos (Vieillot, 1819) -- valid -- Playero pectoral, Pectoral Sandpiper, Bécasseau à poitrine cendrée, Correlimos pectoral, maçarico-de-colete, pilrito-de-colete
  Calidris minuta (Leisler, 1812) -- valid -- Little Stint, Bécasseau minute, Correlimos menudo, pilrito-pequeno
  Calidris minutilla (Vieillot, 1819) -- valid -- Playero chichicuilote, Least Sandpiper, Bécasseau minuscule, Correlimos menudillo, maçariquinho, pilrito-anão
  Calidris ptilocnemis (Coues, 1873) -- valid -- Rock Sandpiper, Bécasseau des Aléoutiennes, Correlimos roquero, maçarico-das-rochas
  Calidris pusilla (Linnaeus, 1766) -- valid -- Playero semipalmeado, Semipalmated Sandpiper, Bécasseau semipalmé, Correlimos semipalmeado, maçarico-rasteirinho, pilrito-rasteirinho
  Calidris ruficollis (Pallas, 1776) -- valid -- Red-necked Stint, Bécasseau à col roux, Correlimos cuellirrojo, pilrito-de-pescoço-ruivo
  Calidris subminuta (Middendorff, 1853) -- valid -- Long-toed Stint, Bécasseau à longs doigts, Correlimos dedilargo, pilrito-de-dedos-compridos
  Calidris temminckii (Leisler, 1812) -- valid -- Temminck's Stint, Bécasseau de Temminck, Correlimos de Temminck, pilrito-de-temminck
  Calidris tenuirostris (Horsfield, 1821) -- valid -- Great Knot, Bécasseau de l'Anadyr, Correlimos grande, seixoeira-grande
  Callipepla Wagler, 1832 -- valid -- Crested Quails
  Callipepla californica (Shaw, 1798) -- valid -- Colin de Californie, Colín de California, codorniz-da-califórnia, Codorniz californiana, Californian Quail, California Quail
  Callipepla gambelii (Gambel, 1843) -- valid -- Colin de Gambel, Colín de Gambel, colim-de-elmo, Gambel's Quail, Codorniz chiquiri
  Callipepla squamata (Vigors, 1830) -- valid -- Colin écaillé, Colín escamado, colim-escamoso, Scaled Quail, Codorniz escamosa
  Calliphlox F. Boie, 1831 -- valid -- Woodstars
  Calliphlox evelynae (Bourcier, 1847) -- invalid -- Bahaman Woodstar, Bahama Woodstar
  Callisaurus Blainville, 1835 -- valid -- Zebra-tailed Lizards
  Callisaurus draconoides Blainville, 1835 -- valid -- Zebra-tailed Lizard, Lagartija cachora
  Callorhinus J. E. Gray, 1859 -- valid -- northern fur seals
  Callorhinus ursinus (Linnaeus, 1758) -- valid -- Northern Fur Seal
  Caloenas G. R. Gray, 1840 -- valid -- Nicobar Pigeons
  Caloenas nicobarica (Linnaeus, 1758) -- valid -- Nicobar Pigeon
  Calonectris diomedea (Scopoli, 1769) -- valid -- Puffin cendré, Pardela de Cory, Cory's Shearwater, puffin cendrée
  Calothorax G. R. Gray, 1840 -- valid -- Lucifer Hummingbirds
  Calothorax lucifer (Swainson, 1827) -- valid -- Lucifer Hummingbird, Colibrí lucifer, Lucifer Sheartail
  Calypte Gould, 1856 -- valid -- Capped Hummingbirds
  Calypte anna (R. Lesson, 1829) -- valid -- Anna's Hummingbird, Colibrí cabeza roja
  Calypte costae (Bourcier, 1839) -- valid -- Costa's Hummingbird, Colibrí cabeza violeta
  Campephagidae Vigors, 1825 -- valid -- Cuckoo-Shrikes, Cuckooshrikes
  Campephilus G. R. Gray, 1840 -- valid
  Camptorhynchus Bonaparte, 1838 -- valid -- Labrador Ducks
  Camptorhynchus labradorius (J. F. Gmelin, 1789) -- valid -- Labrador Duck, Eider du Labrador, Pato del Labrador, pato-do-labrador
  Camptostoma P. L. Sclater, 1857 -- valid -- Beardless-Tyrannulets
  Camptostoma imberbe P. L. Sclater, 1857 -- valid -- Northern Beardless-Tyrannulet, Mosquero lampiño, Northern Beardless Tyrannulet
  Campylorhynchus Spix, 1824 -- valid -- Cactus Wrens
  Campylorhynchus brunneicapillus (Lafresnaye, 1835) -- valid -- Cactus Wren
  Candoia Gray, 1842 -- valid -- Keel-scaled Boas, Bevel-nosed Boas
  Candoia bibroni (A. M. C. Duméril and Bibron, 1844) -- valid -- Bibron's Keel-scaled Boa, Bibron's Bevel-nosed Boa, Pacific Tree Boa
  Candoia carinata (Schneider, 1801) -- valid -- Pacific Keel-scaled Boa, Pacific Ground Boa
  Canidae Fischer, 1817 -- valid -- coyotes, dogs, foxes, jackals, wolves
  Canis Linnaeus, 1758 -- valid -- dogs, foxes, jackals
  Canis latrans Say, 1823 -- valid -- Coyote, coyote, Coyote
  Canis lupus Linnaeus, 1758 -- valid -- Wolf, Gray Wolf, Lobo gris, loup
  Canis rufus Audubon and Bachman, 1851 -- invalid -- Red Wolf
  Caperea Gray, 1864 -- valid -- pygmy right whales
  Caperea marginata (Gray, 1846) -- valid -- Pygmy Right Whale
  Caprimulgidae -- valid -- Nightjars
  Caprimulgus Linnaeus, 1758 -- valid -- Nightjars
  Caprimulgus carolinensis J. F. Gmelin, 1789 -- invalid -- Tapacamino de Carolina, Chuck-will's-widow, engoulevent de Caroline
  Caprimulgus indicus Latham, 1790 -- valid -- Jungle Nightjar, Grey Nightjar
  Caprimulgus noctitherus (Wetmore, 1919) -- invalid -- Puerto Rican Nightjar, Puerto Rican Whip-poor-will
  Caprimulgus ridgwayi (Nelson, 1897) -- invalid -- Buff-collared Nightjar, Tapacamino tu-cuchillo
  Caprimulgus vociferus A. Wilson, 1812 -- invalid -- Tapacamino cuerporruín-norteño, Whip-poor-will, engoulevent bois-pourri
  Capromyidae Smith, 1842 -- valid -- capromyid rodents
  Caracara plancus (J. F. Miller, 1777) -- valid -- Crested Caracara, Southern Caracara, Caracara quebrantahuesos, Southern Crested Caracara, Caracara huppé, Carancho meridional, carcará
  Cardellina Bonaparte, 1850 -- valid -- Red-faced Warblers
  Cardellina rubrifrons (Giraud Jr, 1841) -- valid -- Chipe cara roja, Paruline à face rouge, Red-faced Warbler
  Cardinalidae -- valid -- Cardinals, Grosbeaks, Saltators, Cardinal-Grosbeaks
  Cardinalis Bonaparte, 1838 -- valid -- Cardinals
  Cardinalis cardinalis (Linnaeus, 1758) -- valid -- Cardenal rojo, Northern Cardinal, cardinal rouge
  Cardinalis sinuatus Bonaparte, 1838 -- valid -- Pyrrhuloxia, Cardenal pardo
  Carduelinae Vigors, 1825 -- invalid -- Cardueline Finches
  Carduelis Brisson, 1760 -- valid -- Goldfinches
  Carduelis carduelis (Linnaeus, 1758) -- valid -- Eurasian Goldfinch, European Goldfinch, chardonneret élégant
  Carduelis cucullata Swainson, 1820 -- invalid -- Red Siskin
  Carduelis flammea (Linnaeus, 1758) -- invalid -- Common Redpoll, sizerin flammé
  Carduelis hornemanni (Holböll, 1843) -- invalid -- Hoary Redpoll, sizerin blanchâtre, Arctic Redpoll
  Carduelis lawrencei Cassin, 1850 -- invalid -- Lawrence's Goldfinch, Jilguero gris
  Carduelis pinus (A. Wilson, 1810) -- invalid -- Jilguero pinero, Pine Siskin, tarin des pins
  Carduelis psaltria (Say, 1822) -- invalid -- Lesser Goldfinch, Jilguero dominico
  Carduelis sinica (Linnaeus, 1766) -- invalid -- Oriental Goldfinch, Grey-capped Greenfinch, Oriental Greenfinch
  Carduelis tristis (Linnaeus, 1758) -- invalid -- Jilguero canario, American Goldfinch, chardonneret jaune
  Caretta Rafinesque, 1814 -- valid -- Loggerhead Sea Turtles
  Caretta caretta (Linnaeus, 1758) -- valid -- Loggerhead, Tortuga-marina caguama, Loggerhead Sea Turtle
  Carlia Gray, 1845 -- valid -- Four-fingered Skinks, Rainbow Skinks
  Carlia fuscum (A. M. C. Duméril and Bibron, 1839) -- invalid
  Carphophis Gervais, 1843 -- valid -- Worm Snakes, Wormsnakes
  Carphophis amoenus (Say, 1825) -- valid -- Eastern Worm Snake, Eastern Wormsnake, Common Wormsnake
  Carpodacus Kaup, 1829 -- valid -- Purple Finches
  Carpodacus cassinii S. F. Baird, 1854 -- invalid -- Cassin's Finch, Pinzón de Cassin
  Carpodacus erythrinus (Pallas, 1770) -- valid -- Common Rosefinch
  Carpodacus mexicanus (P. L. Statius Müller, 1776) -- invalid -- Pinzón mexicano, House Finch, roselin familier
  Carpodacus purpureus (J. F. Gmelin, 1789) -- invalid -- Pinzón purpúreo, Purple Finch, roselin pourpré
  Casmerodius Gloger, 1842 -- invalid -- Great Egrets
  Casmerodius albus (Linnaeus, 1758) -- invalid -- Garza blanca, Great Egret, grande aigrette
  Castor Linnaeus, 1758 -- valid -- beavers
  Castor canadensis Kuhl, 1820 -- valid -- castor, American Beaver, Castor Americano
  Castoridae Hemprich, 1820 -- valid -- Beavers
  Catharacta Brünnich, 1764 -- invalid -- Skuas
  Cathartes Illiger, 1811 -- valid -- Turkey Vultures
  Cathartes aura (Linnaeus, 1758) -- valid -- Zopilote aura, Turkey Vulture, Urubu à tête rouge
  Cathartidae Lafresnaye, 1839 -- valid -- American Vultures, New World Vultures
  Catharus Bonaparte, 1850 -- valid
  Catharus fuscescens (Stephens, 1817) -- valid -- Zorzal rojizo, Veery, grive fauve
  Catharus guttatus (Pallas, 1811) -- valid -- Zorzal cola rufa, Hermit Thrush, grive solitaire
  Catharus minimus (Lafresnaye, 1848) -- valid -- Zorzal cara gris, Gray-cheeked Thrush, grive à joues grises, Grey-cheeked Thrush
  Catharus ustulatus (Nuttall, 1840) -- valid -- Zorzal de Swainson, Swainson's Thrush, grive à dos olive
  Catherpes S. F. Baird, 1858 -- valid -- Canyon Wren
  Catherpes mexicanus (Swainson, 1829) -- valid -- Canyon Wren, Chivirín barranqueño
  Catoptrophorus Bonaparte, 1827 -- invalid -- Willets
  Catoptrophorus semipalmatus (J. F. Gmelin, 1789) -- invalid -- Willet, Willet, chevalier semipalmé
  Caudata -- valid -- salamandres, salamandra, Salamanders
  Cebidae Bonaparte, 1831 -- valid -- New World monkeys
  Cemophora Cope, 1860 -- valid -- Scarlet Snakes, Scarletsnakes
  Cemophora coccinea (Blumenbach, 1788) -- valid -- Scarlet Snake, Scarletsnake
  Centrocercus Swainson, 1832 -- valid -- Sage Grouse
  Centrocercus urophasianus (Bonaparte, 1827) -- valid -- Tétras des armoises, Gallo de las artemisas grande, tetraz-das-artemísias, Greater Sage Grouse, Sage Grouse, Greater Sage-Grouse
  Cepphus Pallas, 1769 -- valid -- Guillemots
  Cepphus columba Pallas, 1811 -- valid -- Arao pichón, Pigeon Guillemot, Guillemot colombin, Arao colombino, airo-columbino
  Cepphus grylle (Linnaeus, 1758) -- valid -- Black Guillemot, Guillemot à miroir, Arao aliblanco, airo-d'asa-branca
  Cerberus Cuvier, 1829 -- valid -- Dog-faced Water Snakes
  Cerberus rynchops (Schneider, 1799) -- valid -- Dog-faced Water Snake, South Asian Bockadam
  Cercopithecidae Gray, 1821 -- valid -- Old World monkeys
  Cerorhinca Bonaparte, 1828 -- valid -- Rhinoceros Auklets
  Cerorhinca monocerata (Pallas, 1811) -- valid -- Rhinoceros Auklet, Alca rinoceronte, Macareux rhinocéros, Alca unicórnea, mérgulo-unicórnio
  Certhia Linnaeus, 1758 -- valid -- Creepers
  Certhiidae Leach, 1820 -- valid -- Creepers, grimpereaux
  Cervidae Goldfuss, 1820 -- valid -- cervids, caribou, deer, moose, wapiti
  Cervus Linnaeus, 1758 -- valid -- red deer, deer, wapiti
  Cervus elaphus Linnaeus, 1758 -- valid -- elk, wapiti, Ciervo común, wapiti or elk, wapiti, Red Deer (see comments)
  Cervus elaphus elaphus Linnaeus, 1758 -- valid -- wapiti
  Ceryle alcyon (Linnaeus, 1758) -- invalid -- Martín-pescador norteño, Belted Kingfisher, martin-pêcheur d'Amérique
  Ceryle torquata (Linnaeus, 1766) -- invalid -- Ringed Kingfisher, Martín-pescador de collar
  Cetacea Brisson, 1762 -- valid -- baleines, cétacés, dauphins, mammfères marins, marsouins, baleia, cetáceo, golfinho, cetaceans, whales, dolphins, marine mammals, porpoises
  Cettia Bonaparte, 1834 -- valid -- Bush-Warblers
  Cettia annae (Hartlaub & Finsch, 1868) -- invalid -- Palau Bush Warbler
  Cettia diphone (Kittlitz, 1830) -- invalid -- Japanese Bush-Warbler, Japanese Bush Warbler
  Chaetoptila G. R. Gray, 1869 -- valid -- Kioeas, Kioeas
  Chaetoptila angustipluma (Peale, 1848) -- valid -- Kioea, Kioea
  Chaetura Stephens, 1826 -- valid -- Stiff-tailed Swifts
  Chaetura brachyura (Jardine, 1846) -- valid -- Short-tailed Swift
  Chaetura pelagica (Linnaeus, 1758) -- valid -- Vencejo de chimenea, Chimney Swift, martinet ramoneur
  Chaetura vauxi (J. K. Townsend, 1839) -- valid -- Vaux's Swift, Vencejo de Vaux
  Chamaea Gambel, 1847 -- valid -- Wrentits
  Chamaea fasciata (Gambel, 1845) -- valid -- Wrentit, Camea
  Chamaeleo Laurenti, 1768 -- valid -- Chameleons
  Chamaeleo jacksonii Boulenger, 1896 -- invalid -- Jackson's Chameleon
  Chamaeleonidae -- valid -- Chameleons
  Charadriidae Leach, 1820 -- valid -- Plovers
  Charadriiformes -- valid -- Shore Birds, Gulls, Alcids, Plovers, Oystercatchers, goélands, alcidés, Auks, huîtriers
  Charadrius Linnaeus, 1758 -- valid -- Ringed Plovers
  Charadrius alexandrinus Linnaeus, 1758 -- valid -- Kentish Plover, Pluvier à collier interrompu, Chorlitejo patinegro, borrelho-de-coleira-interrompida
  Charadrius dubius Scopoli, 1786 -- valid -- Little Ringed Plover, Pluvier petit-gravelot, Chorlitejo chico, borrelho-pequeno-de-coleira
  Charadrius hiaticula Linnaeus, 1758 -- valid -- Common Ringed Plover, Pluvier grand-gravelot, Chorlitejo grande, borrelho-grande-de-coleira
  Charadrius leschenaultii R. Lesson, 1826 -- valid -- Greater Sand Plover, Greater Sand-Plover, Pluvier de Leschenault, Chorlitejo mongol grande, borrelho-grande-de-colar-ruivo
  Charadrius melodus Ord, 1824 -- valid -- Chorlo chiflador, Piping Plover, Pluvier siffleur, Chorlitejo silbador, batuíra-melodiosa
  Charadrius mongolus Pallas, 1776 -- valid -- Mongolian Plover, Lesser Sand-Plover, Lesser Sand Plover, Pluvier de Mongolie, Chorlitejo mongol chico, borrelho-pequeno-de-colar-ruivo, Siberian Sand Plover
  Charadrius montanus J. K. Townsend, 1837 -- valid -- Mountain Plover, Chorlo llanero, Pluvier montagnard, Chorlito llanero, batuíra-montesa
  Charadrius morinellus Linnaeus, 1758 -- valid -- Eurasian Dotterel, Pluvier guignard, Chorlito carambolo, borrelho-ruivo
  Charadrius semipalmatus Bonaparte, 1825 -- valid -- Chorlo semipalmeado, Semipalmated Plover, pluvier à semipalmé, Pluvier semipalmé, Chorlitejo semipalmeado, batuíra-de-bando
  Charadrius vociferus Linnaeus, 1758 -- valid -- Chorlo tildío, Killdeer, Pluvier kildir, Chorlitejo culirrojo, borrelho-de-coleira-dupla
  Charadrius wilsonia Ord, 1814 -- valid -- Chorlo pico grueso, Wilson's Plover, Pluvier de Wilson, Chorlitejo piquigrueso, batuíra-bicuda
  Charina Gray, 1849 -- valid -- Rubber Boas, Rosy Boas
  Chasiempis Cabanis, 1847 -- valid -- 'Elepaios
  Chasiempis sandwichensis (Gmelin, 1789) -- valid -- 'Elepaio, Elepaio
  Chelonia Brongniart, 1800 -- valid -- Green Sea Turtles
  Chelonia mydas (Linnaeus, 1758) -- valid -- Green Sea Turtle, Tortuga-marina verde-del Atlántico, common green sea turtle
  Cheloniidae Oppel, 1811 -- valid -- marine turtles, modern sea turtles, Sea Turtles
  Chelydra Schweigger, 1812 -- valid -- Snapping Turtles, common snapping turtles
  Chelydra serpentina (Linnaeus, 1758) -- valid -- Snapping Turtle, chélydre serpentine, Tortuga-lagarto común, Common Snapping Turtle, North American Snapping Turtle
  Chelydridae Gray, 1831 -- valid -- Snapping Turtles
  Chen Boie, 1822 -- invalid -- Snow Geese
  Chen caerulescens (Linnaeus, 1758) -- invalid -- Blue Goose, Ganso blanco, Snow Goose, oie des neiges
  Chen canagica (Sevastianov, 1802) -- invalid -- Emperor Goose
  Chen rossii (Cassin, 1861) -- invalid -- Ross' Goose, Ganso de Ross, Ross's Goose, oie de Ross
  Chilomeniscus Cope, 1860 -- valid -- Sand Snakes, Sandsnakes
  Chilomeniscus cinctus Cope, 1861 -- invalid -- Banded Sand Snake, Culebra-arenera bandada
  Chionactis Cope, 1860 -- valid -- Shovel-nosed Snakes
  Chionactis occipitalis (Hallowell, 1854) -- valid -- Western Shovel-nosed Snake, Culebra-nariz de pala del oeste, Western Shovelnose Snake, Mojave Shovelnose Snake, Mohave Shovel-nosed Snake
  Chionactis palarostris (Klauber, 1937) -- valid -- Sonoran Shovel-nosed Snake, Culebra-nariz de pala sonorense, Sonoran Shovelnose Snake
  Chionactis saxatilis Funk, 1967 -- invalid -- Mountain Shovel-nosed Snake
  Chlidonias Rafinesque, 1822 -- valid -- Black Terns
  Chloridops S. B. Wilson, 1888 -- valid -- Kona Finches
  Chloridops kona S. B. Wilson, 1888 -- valid -- Kona Grosbeak
  Chloroceryle Kaup, 1848 -- valid -- Green Kingfishers
  Chloroceryle americana (J. F. Gmelin, 1788) -- valid -- martim-pescador-pequeno, Martín pescador verde, Martin-pêcheur vert, Green Kingfisher, Martín-pescador verde
  Chlorostilbon Gould, 1853 -- valid -- Emeralds
  Chlorostilbon maugaeus (Audebert & Vieillot, 1801) -- invalid -- Puerto Rican Emerald
  Choeronycteris Tschudi, 1844 -- valid -- long-tongued bats
  Choeronycteris mexicana Tschudi, 1844 -- valid -- Murciélago trompudo, Mexican Long-tongued Bat
  Chondestes Swainson, 1827 -- valid -- Lark Sparrows
  Chondestes grammacus (Say, 1822) -- valid -- Chingolo arlequín, escrevedeira-arlequim, Lark Sparrow, bruant à joues marron, Gorrión arlequín
  Chondrohierax Lesson, 1843 -- valid -- Hook-billed Kites
  Chondrohierax uncinatus (Temminck, 1822) -- valid -- Hook-billed Kite, Gavilán pico gancho, Milan bec-en-croc
  Chondrohierax uncinatus uncinatus (Temminck, 1822) -- valid -- Hook-billed Kite
  Chordeiles Swainson, 1832 -- valid -- Nighthawks
  Chordeiles acutipennis (Hermann, 1783) -- valid -- Chotacabras menor, Lesser Nighthawk
  Chordeiles gundlachii Lawrence, 1857 -- valid -- Antillean Nighthawk
  Chordeiles minor (J. R. Forster, 1771) -- valid -- Chotacabras zumbón, engoulevent d'Amérique, Common Nighthawk
  Chrysemys Gray, 1844 -- valid -- Painted Turtles
  Chrysemys picta (Schneider, 1783) -- valid -- Painted Turtle, Tortuga pintada, tortue peinte, Eastern Painted Turtle
  Ciconiiformes -- valid -- Storks, cigognes
  Cinclidae Sundevall, 1836 -- valid -- Dippers
  Cinclus Borkhausen, 1797 -- valid -- Dippers
  Cinclus mexicanus Swainson, 1827 -- valid -- American Dipper, Mirlo-acuático norteamericano
  Circus Lacepede, 1799 -- valid -- Harriers
  Circus cyaneus (Linnaeus, 1766) -- valid -- Gavilán rastrero, Northern Harrier, Busard Saint-Martin
  Ciridops A. Newton, 1892 -- valid -- Ciridopses
  Ciridops anna (Dole, 1878) -- valid -- Ula-ai-hawane
  Cistothorus Cabanis, 1850 -- valid -- Marsh Wrens
  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
  Clamator Kaup, 1829 -- valid -- Chestnut-winged Cuckoos
  Clamator coromandus (Linnaeus, 1766) -- valid -- Chestnut-winged Cuckoo
  Clangula Leach, 1819 -- valid -- Long-tailed Duck
  Clangula hyemalis (Linnaeus, 1758) -- valid -- Long-tailed Duck, Pato cola larga, Harelde kakawi, Pato havelda, pato-rabilongo
  Clemmys Ritgen, 1828 -- valid -- marsh turtles, pond turtles, Spotted Turtles
  Clemmys guttata (Schneider, 1792) -- valid -- tortue ponctuée, Spotted Turtle
  Clemmys insculpta (Le Conte, 1830) -- invalid -- ornate box turtle, wood turtle, tortue des bois
  Clemmys marmorata (Baird and Girard, 1852) -- invalid -- western pond turtle, Tortuga marmoleada, Pacific pond turtle
  Clemmys muhlenbergii (Schoepff, 1801) -- invalid -- bog turtle
  Cleptornis Oustalet, 1889 -- valid -- Golden Honeyeaters
  Cleptornis marchei (Oustalet, 1889) -- valid -- Golden Honeyeater, Golden White-eye
  Clethrionomys Tilesius, 1850 -- invalid -- red-backed voles
  Clethrionomys californicus (Merriam, 1890) -- invalid -- Western Red-backed Vole
  Clethrionomys gapperi (Vigors, 1830) -- invalid -- Southern Red-backed Vole, campagnol à dos roux de Gapper
  Clethrionomys rutilus (Pallas, 1779) -- invalid -- Northern Red-backed Vole
  Clonophis Cope, 1889 -- valid -- Kirtland's Snakes
  Clonophis kirtlandii (Kennicott, 1856) -- valid -- Kirtland's Snake
  Clytorhynchus Elliot, 1870 -- valid -- Shrikebills
  Clytorhynchus vitiensis (Hartlaub, 1866) -- valid -- Fiji Shrikebill
  Cnemidophorus Wagler, 1830 -- valid -- Racerunners, Whiptails
  Cnemidophorus burti Taylor, 1938 -- invalid -- Huico de cañón o punteado de cañón, Canyon Spotted Whiptail
  Cnemidophorus dixoni Scudday, 1973 -- invalid -- Gray-checkered Whiptail
  Cnemidophorus exsanguis Lowe, 1956 -- invalid -- Huico chihuahuense, Chihuahuan Spotted Whiptail
  Cnemidophorus flagellicaudus Lowe and Wright, 1964 -- invalid -- Gila Spotted Whiptail
  Cnemidophorus gularis Baird and Girard, 1852 -- invalid -- Texas Spotted Whiptail, Huico Texano
  Cnemidophorus hyperythrus Cope, 1863 -- invalid -- Orange-throated Whiptail, Huico Garganta Anaranjada
  Cnemidophorus inornatus Baird, 1859 -- invalid -- Little Striped Whiptail, Huico adornado
  Cnemidophorus laredoensis McKinney, Kay and Anderson, 1973 -- invalid -- Laredo Striped Whiptail, Huico de Laredo
  Cnemidophorus lemniscatus (Linnaeus, 1758) -- valid -- Rainbow Lizard, Rainbow Whiptail, South American Whiptail
  Cnemidophorus neomexicanus Lowe and Zweifel, 1952 -- invalid -- New Mexican Whiptail, New Mexico Whiptail, Huico de Nuevo México
  Cnemidophorus sexlineatus (Linnaeus, 1766) -- invalid -- Six-lined Racerunner
  Cnemidophorus sonorae Lowe and Wright, 1964 -- invalid -- Sonoran Spotted Whiptail, Huico de Sonora
  Cnemidophorus tesselatus (Say in James, 1823) -- invalid -- Checkered Whiptail, Colorado Checkered Whiptail, Common Checkered Whiptail, Huico de cuadros
  Cnemidophorus uniparens Wright and Lowe, 1965 -- invalid -- Desert Grassland Whiptail, Huico de pastizal-desértico
  Cnemidophorus velox Springer, 1928 -- invalid -- Plateau Striped Whiptail
  Coccothraustes Brisson, 1760 -- valid -- Hawfinches
  Coccothraustes coccothraustes (Linnaeus, 1758) -- valid -- Hawfinch
  Coccothraustes vespertinus (W. Cooper, 1825) -- invalid -- Evening Grosbeak, gros-bec errant, Picogrueso norteño
  Coccyzus Vieillot, 1816 -- valid -- Spotted-tailed Cuckoos
  Coccyzus americanus (Linnaeus, 1758) -- valid -- Cuclillo pico amarillo, Yellow-billed Cuckoo, coulicou à bec jaune
  Coccyzus erythropthalmus (A. Wilson, 1811) -- valid -- Cuclillo pico negro, Black-billed Cuckoo, coulicou à bec noir
  Coccyzus minor (Gmelin, 1788) -- valid -- Cuclillo manglero, Mangrove Cuckoo
  Coereba Vieillot, 1809 -- valid -- Bananaquits, Bananaquit
  Coereba flaveola (Linnaeus, 1758) -- valid -- Sucrier à ventre jaune, Platanero, cambacica, Bananaquit, Reinita-mielera
  Coerebidae -- invalid -- Bananaquits, Bananaquit
  Colaptes Swainson, 1825 -- invalid
  Colaptes auratus (Linnaeus, 1758) -- valid -- Carpintero de pechera, Northern Flicker, pic flamboyant
  Coleonyx Gray, 1845 -- valid -- Banded Geckos
  Coleonyx brevis Stejneger, 1893 -- valid -- Texas Banded Gecko, Cuija texana
  Coleonyx reticulatus Davis and Dixon, 1958 -- valid -- Reticulated Gecko, Reticulate Banded Gecko, Cuija reticulada, Big Bend gecko
  Coleonyx switaki (Murphy, 1974) -- valid -- Barefoot Gecko, Cuija descalza, Switak's Banded Gecko
  Coleonyx variegatus (Baird, 1859) -- valid -- Western Banded Gecko, Cuija occidental
  Colibri von Spix, 1824 -- valid -- Violet-ears
  Colibri thalassinus (Swainson, 1827) -- valid -- Colibrí oreja violeta, Green Violet-ear, Green Violetear, Mexican Violetear
  Colinus Goldfuss, 1820 -- valid -- Bobwhites
  Colinus virginianus (Linnaeus, 1758) -- valid -- Colín de Virginia, codorniz-da-virgínia, Codorniz cotuí, Northern Bobwhite, colin de Virginie
  Coluber Linnaeus, 1758 -- valid -- Racers
  Coluber constrictor Linnaeus, 1758 -- valid -- Racer, Culebra-corredora constrictor, Eastern Racer, North American Racer
  Colubridae Oppel, 1811 -- valid -- Colubrids, Typical Snakes
  Columba Linnaeus, 1758 -- valid -- Pigeons
  Columba fasciata Say, 1822 -- invalid -- Band-tailed Pigeon, Paloma de collar
  Columba flavirostris Wagler, 1831 -- invalid -- Red-billed Pigeon, Paloma morada
  Columba inornata Vigors, 1827 -- invalid -- Plain Pigeon
  Columba leucocephala Linnaeus, 1758 -- invalid -- White-crowned Pigeon, Paloma corona blanca
  Columba livia J. F. Gmelin, 1789 -- valid -- Paloma doméstica, Rock Dove, pigeon biset, Common Pigeon, Rock Pigeon
  Columba squamosa Bonnaterre, 1792 -- invalid -- Scaly-naped Pigeon
  Columbidae -- valid -- Doves, colombes, pigeons
  Columbiformes -- valid -- Doves, colombes, pigeons, Pigeons
  Columbina von Spix, 1825 -- valid -- Ground-Doves
  Columbina inca (R. Lesson, 1847) -- valid -- Inca Dove, Tórtola cola larga
  Columbina passerina (Linnaeus, 1758) -- valid -- Common Ground-Dove, Tórtola coquita, Common Ground Dove
  Columbina talpacoti (Temminck, 1810) -- valid -- Ruddy Ground-Dove, Tórtola rojiza, Ruddy Ground Dove
  Condylura Illiger, 1811 -- valid -- star-nosed moles
  Condylura cristata (Linnaeus, 1758) -- valid -- condylure étoilé, Star-nosed Mole
  Conepatus Gray, 1837 -- valid -- hog-nosed skunks
  Conepatus leuconotus (Lichtenstein, 1832) -- valid -- American Hog-nosed Skunk, eastern hog-nosed skunk, Zorrillo-narigón occidental, white-backed hog-nosed skunk, badger skunk, rooter skunk, Texas skunk
  Conepatus mesoleucus (Lichtenstein, 1832) -- invalid -- western hog-nosed skunk, hog-nosed skunk, Zorrillo-narigón norteño
  Coniophanes Hallowell in Cope, 1860 -- valid -- Black-striped Snakes
  Coniophanes imperialis (Kennicott in Baird, 1859) -- valid -- Regal Black-striped Snake, Culebra rayas negras, Black-striped Snake
  Contia Baird and Girard, 1853 -- valid -- Sharp-tailed Snakes
  Contia tenuis (Baird and Girard, 1852) -- valid -- Sharp-tailed Snake, Sharptail Snake, Common Sharp-tailed Snake
  Contopus Cabanis, 1855 -- valid -- Pewees
  Contopus borealis (Swainson, 1832) -- invalid -- Olive-sided Flycatcher, Pibí boreal
  Contopus caribaeus (Orbigny, 1839) -- valid -- Greater Antillean Pewee, Cuban Pewee
  Contopus latirostris (J. Verreaux, 1866) -- valid -- Lesser Antillean Pewee
  Contopus pertinax Cabanis & Heine, 1859 -- valid -- Greater Pewee, Pibí tengofrío
  Contopus sordidulus P. L. Sclater, 1859 -- valid -- Western Wood-Pewee, Pibí occidental, Western Wood Pewee
  Contopus virens (Linnaeus, 1766) -- valid -- Pibí oriental, Eastern Wood-Pewee, pioui de l'est, Eastern Wood Pewee
  Conuropsis Salvadori, 1891 -- valid -- Carolina Parakeets
  Conuropsis carolinensis (Linnaeus, 1758) -- valid -- Carolina Parakeet
  Cophosaurus Troschel, 1852 -- valid -- Greater Earless Lizards
  Cophosaurus texanus Troschel, 1852 -- valid -- Greater Earless Lizard, Lagartija-sorda mayor, Texas Greater Earless Lizard
  Copsychus Wagler, 1827 -- valid -- Shamas
  Copsychus malabaricus (Scopoli, 1786) -- valid -- White-rumped Shama
  Coraciidae -- valid -- Rollers
  Coraciiformes -- valid -- Motmots, Bee-eaters, Todies, Kingfishers, Rollers, martins-pêcheurs
  Coracina Vieillot, 1816 -- valid -- Cuckoo-Shrikes
  Coracina tenuirostris (Jardine, 1831) -- valid -- Cicadabird, Common Cicadabird
  Coragyps Geoffroy Saint-Hilaire, 1853 -- invalid -- Black Vultures
  Coragyps atratus (Bechstein, 1793) -- valid -- Black Vulture, Zopilote común, Urubu noir
  Corvidae Leach, 1820 -- valid -- Crows, Jays, Magpies, corneilles, geais, pies
  Corvus Linnaeus, 1758 -- valid -- Crows
  Corvus brachyrhynchos C. L. Brehm, 1822 -- valid -- Cuervo americano, American Crow, corneille d'Amérique
  Corvus caurinus S. F. Baird, 1858 -- valid -- Northwestern Crow
  Corvus corax Linnaeus, 1758 -- valid -- Cuervo común, Common Raven, grand corbeau, Northern Raven
  Corvus cryptoleucus Couch, 1854 -- valid -- Chihuahuan Raven, Cuervo llanero
  Corvus hawaiiensis Peale, 1848 -- valid -- 'Alala, Hawaiian Crow
  Corvus imparatus J. L. Peters, 1929 -- valid -- Mexican Crow, Cuervo tamaulipeco, Tamaulipas Crow
  Corvus kubaryi Reichenow, 1885 -- valid -- Marianas Crow, Mariana Crow
  Corvus leucognaphalus Daudin, 1800 -- valid -- White-necked Crow
  Corvus monedula Linnaeus, 1758 -- invalid -- Eurasian Jackdaw, choucas des tours, Western Jackdaw
  Corvus ossifragus A. Wilson, 1812 -- valid -- Fish Crow
  Coturnicops G. R. Gray, 1855 -- valid -- Yellow Rails
  Coturnicops noveboracensis (Gmelin, 1789) -- valid -- Polluela amarilla, Yellow Rail, râle jaune
  Coturnix Bonnaterre, 1791 -- invalid -- Asian Quails
  Coturnix chinensis (Linnaeus, 1766) -- invalid -- Blue-breasted Quail, King Quail
  Coturnix japonica Temminck & Schlegel, 1848 -- valid -- Caille du Japon, Codorniz japonesa, codorna-japonesa, Japanese Quail
  Cracidae -- valid -- Chachalacas, Curassows, Guans
  Crex Bechstein, 1803 -- valid -- Corn Crakes
  Crex crex (Linnaeus, 1758) -- valid -- Corn Crake
  Crocodilia -- valid -- crocodilo, jacaré, Crocodilians, crocodiles, alligators, caimans, gavials
  Crocodylidae -- valid -- Crocodiles
  Crocodylus Laurenti, 1768 -- valid -- Crocodiles
  Crocodylus acutus Cuvier, 1807 -- valid -- American Crocodile, Cocodrilo americano, caiman de la costa, Central American Alligator, cocodrilo, lagarto
  Crocodylus novaeguineae Schmidt, 1928 -- valid -- New Guinea Crocodile, New Guinea Freshwater Crocodile
  Crocodylus porosus Schneider, 1801 -- valid -- Saltwater Crocodile, Estuarine Crocodile, Saltie
  Crotalus Linnaeus, 1758 -- valid -- Rattlesnakes
  Crotalus adamanteus Palisot de Beauvois, 1799 -- valid -- Eastern Diamondback Rattlesnake, Eastern Diamond-backed Rattlesnake
  Crotalus atrox Baird and Girard, 1853 -- valid -- Western Diamondback Rattlesnake, Western Diamond-backed Rattlesnake, Víbora-cascabel de diamantes
  Crotalus cerastes Hallowell, 1854 -- valid -- Sidewinder, Víbora-cascabel cornuda
  Crotalus horridus Linnaeus, 1758 -- valid -- Timber Rattlesnake, crotale des bois
  Crotalus lepidus (Kennicott, 1861) -- valid -- Rock Rattlesnake, Víbora-cascabel variable
  Crotalus mitchellii (Cope, 1861) -- valid -- Speckled Rattlesnake
  Crotalus molossus Baird and Girard, 1853 -- valid -- Black-tailed Rattlesnake, Víbora-cascabel cola negra, Western Black-tailed Rattlesnake
  Crotalus pricei Van Denburgh, 1895 -- valid -- Twin-spotted Rattlesnake, Víbora-cascabel motas gemelas
  Crotalus scutulatus (Kennicott, 1861) -- valid -- Mojave Rattlesnake, Mohave Rattlesnake, Víbora-cascabel del Altiplano, Green Rattlesnake
  Crotalus tigris Kennicott, 1859 -- valid -- Tiger Rattlesnake, Víbora-cascabel tigre
  Crotalus viridis (Rafinesque, 1818) -- valid -- Western Rattlesnake, Prairie Rattlesnake, Víbora-cascabel occidental
  Crotalus willardi Meek, 1905 -- valid -- Ridge-nosed Rattlesnake, Víbora-cascabel bigotuda
  Crotaphytus Holbrook, 1842 -- valid -- Collared Lizards
  Crotaphytus collaris (Say in James, 1823) -- valid -- Collared Lizard, Eastern Collared Lizard, Lagartija-de collar común
  Crotaphytus insularis Van Denburgh and Slevin, 1921 -- valid -- Black-collared Lizard, Desert Collared Lizard, Lagartija-de collar negra, Eastern Collared Lizard
  Crotaphytus reticulatus Baird, 1859 -- valid -- Reticulate Collared Lizard, Lagartija-de collar reticulada
  Crotophaga Linnaeus, 1758 -- valid -- Anis
  Crotophaga ani Linnaeus, 1758 -- valid -- Smooth-billed Ani, Garrapatero pico liso
  Crotophaga sulcirostris Swainson, 1827 -- valid -- Groove-billed Ani, Garrapatero pijuy
  Cryptoblepharus Wiegmann, 1834 -- valid -- Snake-eyed Skinks
  Cryptoblepharus boutonii poecilopleurus (Wiegmann, 1836) -- invalid
  Cryptobranchidae Fitzinger, 1826 -- valid -- Giant Salamanders, Hellbenders
  Cryptotis Pomel, 1848 -- valid -- small-eared shrews
  Cryptotis parva (Say, 1823) -- valid -- bee shrew, little short-tailed shrew, small short-tailed shrew, Least Shrew, Musaraña-orejillas mínima, North American Least Shrew
  Ctenosaura Wiegmann, 1828 -- valid -- Spiny-tailed Iguanas
  Ctenosaura pectinata (Wiegmann, 1834) -- valid -- Mexican Spiny-tailed Iguana, Iguana-espinosa mexicana, Spiny-tailed Iguana, Western Spiny-tailed Iguana, Guerreran Spiny-tailed Iguana
  Cuculidae -- valid -- Anis, Cuckoos, Roadrunners
  Cuculiformes -- valid -- Cuckoos, coucoua
  Cuculus Linnaeus, 1758 -- valid -- Eurasian Cuckoos
  Cuculus canorus Linnaeus, 1758 -- valid -- Common Cuckoo
  Cuculus fugax Horsfield, 1821 -- valid -- Hodgson's Hawk-Cuckoo
  Cuculus saturatus Blyth, 1843 -- valid -- Oriental Cuckoo
  Cyanocitta Strickland, 1845 -- valid -- Blue Jays
  Cyanocitta cristata (Linnaeus, 1758) -- valid -- Blue Jay, geai bleu, Chara azul
  Cyanocitta stelleri (Gmelin, 1788) -- valid -- Chara crestada, Steller's Jay, geai de Steller
  Cyanocompsa Cabanis, 1861 -- valid -- Blue Buntings
  Cyanocompsa parellina (Bonaparte, 1850) -- valid -- Blue Bunting, Colorín azulnegro
  Cyanocorax F. Boie, 1826 -- valid -- Tufted Jays
  Cyanocorax morio (Wagler, 1829) -- invalid -- Brown Jay, Chara papán
  Cyanocorax yncas (Boddaert, 1783) -- valid -- Green Jay, Chara verde, Inca Jay
  Cyclura Harlan, 1825 -- valid -- Ground Iguanas, Rock Iguanas
  Cyclura cornuta (Bonnaterre, 1789) -- valid -- Horned Ground Iguana, Hispaniolan Rhinoceros Iguana, Rhinoceros Iguana
  Cyclura nubila (Gray, 1831) -- valid -- Cuban Ground Iguana, Clouded Rock Iguana, Cayman Islands Ground Iguana, Cuban Iguana
  Cyclura nubila nubila (Gray, 1831) -- valid -- Cuban Ground Iguana, Cuban Rock Iguana, Cuban Iguana, Cayman Islands Ground Iguana
  Cygnus Bechstein, 1803 -- invalid -- Swans
  Cygnus buccinator Richardson, 1831 -- valid -- Cisne trompetero, Trumpeter Swan, Cygne trompette, cisne-trompeteiro
  Cygnus columbianus (Ord, 1815) -- valid -- Cisne de tundra, Tundra Swan, Cygne siffleur, Cisne chico, cisne-pequeno
  Cygnus cygnus (Linnaeus, 1758) -- valid -- Whooper Swan, Cygne chanteur, Cisne cantor, cisne-bravo
  Cygnus olor (J. F. Gmelin, 1789) -- valid -- Mute Swan, cygne tuburculé, Cygne tuberculé, Cisne vulgar, cisne-mudo
  Cynanthus Swainson, 1827 -- valid -- Broad-billed Hummingbirds
  Cynanthus latirostris Swainson, 1827 -- valid -- Broad-billed Hummingbird, Colibrí pico ancho
  Cynomys Rafinesque, 1817 -- valid -- Prairie Dogs
  Cynomys gunnisoni (Baird, 1855) -- valid -- Gunnison's Prairie Dog
  Cynomys leucurus Merriam, 1890 -- valid -- White-tailed Prairie Dog
  Cynomys ludovicianus (Ord, 1815) -- valid -- Arizona black-tailed prairie dog, Perro-llanero cola negra, Black-tailed Prairie Dog
  Cynomys parvidens J. A. Allen, 1905 -- valid -- Utah Prairie Dog
  Cypseloides Streubel, 1848 -- valid -- Black Swifts
  Cypseloides niger (J. F. Gmelin, 1789) -- valid -- Black Swift, Vencejo negro, American Black Swift
  Cyrtodactylus Gray, 1827 -- valid -- Curve-toed Geckos
  Cyrtodactylus scaber (Heyden in Rüppell, 1827) -- invalid
  Cyrtonyx Gould, 1844 -- valid -- Montezuma Quails
  Cyrtonyx montezumae (Vigors, 1830) -- valid -- Colin arlequin, Colín de Moctezuma, colim-de-montezuma, Montezuma Quail, Codorniz Moctezuma
  Cystophora Nilsson, 1820 -- valid -- hooded seals
  Cystophora cristata (Erxleben, 1777) -- valid -- Hooded Seal, bladdernose seal, phoque à capuchon
  Dasypodidae Gray, 1821 -- valid -- Armadillos
  Dasypus Linnaeus, 1758 -- valid -- Long-nosed Armadillos
  Dasypus novemcinctus Linnaeus, 1758 -- valid -- long-nosed armadillo, Armadillo nueve bandas, Nine-banded Armadillo
  Deirochelys Agassiz, 1857 -- valid -- Chicken Turtles
  Deirochelys reticularia (Latreille in Sonnini and Latreille, 1801) -- valid -- Chicken Turtle
  Delichon Moore, 1854 -- valid -- House-Martins
  Delichon urbica (Linnaeus, 1758) -- invalid -- Common House-Martin
  Delphinapterus Lacépède, 1804 -- valid -- white whales, belugas
  Delphinapterus leucas (Pallas, 1776) -- valid -- white whale, béluga, Beluga, belukha
  Delphinidae Gray, 1821 -- valid -- dolphins, killer whales, pilot whales, marine dolphins
  Delphinus Linnaeus, 1758 -- valid -- common dolphins
  Delphinus delphis Linnaeus, 1758 -- valid -- saddle-backed dolphin, common dolphin, Short-beaked Common Dolphin, short-beaked saddle-backed dolphin, Short-beaked Saddleback Dolphin, Delfín común
  Dendragapus D. G. Elliot, 1864 -- valid -- Grouse, Sooty Grouse, Dusky Grouse, Blue Grouse
  Dendragapus canadensis (Linnaeus, 1758) -- invalid -- Spruce Grouse
  Dendragapus obscurus (Say, 1822) -- valid -- Dusky Grouse, Tétras sombre, Gallo oscuro, tetraz-azul, Blue Grouse
  Dendrelaphis Boulenger, 1890 -- valid -- Asian Tree Snakes, Bronzebacks
  Dendrelaphis punctulatus (Gray, 1826) -- valid -- Green Tree Snake, Common Bronzeback, Common Tree Snake
  Dendrobates Wagler, 1830 -- valid -- Poison-dart Frogs, Dart-poison Frogs, Poison Dart Frogs
  Dendrobates auratus (Girard, 1855) -- valid -- Dart Poison Frog, Green and Black Poison Dart Frog, Green and Black Dart-poison Frog, Green-and-black Poison Dart Frog
  Dendrobatidae Cope, 1865 -- valid -- Dendrobatids, Poison Frogs, Poison-dart Frogs, Dart-poison Frogs, Dendrobatid Frogs
  Dendrocygna Swainson, 1837 -- valid -- Whistling-Ducks
  Dendrocygna arborea (Linnaeus, 1758) -- valid -- West Indian Whistling Duck, West Indian Whistling-Duck, Dendrocygne des Antilles, Suirirí yaguaza, marreca-laguaça
  Dendrocygna autumnalis (Linnaeus, 1758) -- valid -- Black-bellied Whistling Duck, Pijije ala blanca, Black-bellied Whistling-Duck, Dendrocygne à ventre noir, Suirirí piquirrojo, marreca-cabocla
  Dendrocygna bicolor (Vieillot, 1816) -- valid -- Fulvous Whistling Duck, Pijije canelo, Fulvous Whistling-Duck, Dendrocygne fauve, Suirirí bicolor, marreca-caneleira
  Dendroica G. R. Gray, 1842 -- invalid -- Northern Warblers
  Dendroica adelaidae S. F. Baird, 1865 -- invalid -- Adelaide's Warbler
  Dendroica angelae Kepler & Parkes, 1972 -- invalid -- Elfin Woods Warbler, Elfin-woods Warbler
  Dendroica caerulescens (J. F. Gmelin, 1789) -- invalid -- Chipe azulnegro, Black-throated Blue Warbler, paruline bleue
  Dendroica castanea (A. Wilson, 1810) -- invalid -- Chipe castaño, Bay-breasted Warbler, paruline à poitrine baie
  Dendroica cerulea (A. Wilson, 1810) -- invalid -- Chipe cerúleo, Cerulean Warbler, paruline azurée
  Dendroica chrysoparia P. L. Sclater & Salvin, 1860 -- invalid -- Golden-cheeked Warbler, Golden-cheeked Wood Warbler, Chipe mejilla dorada
  Dendroica coronata (Linnaeus, 1766) -- invalid -- Chipe coronado, Yellow-rumped Warbler, paruline à croupion jaune
  Dendroica discolor (Vieillot, 1809) -- invalid -- Chipe de pradera, Prairie Warbler, paruline des prés
  Dendroica dominica (Linnaeus, 1766) -- invalid -- Chipe garganta amarilla, Yellow-throated Warbler, paruline à gorge jaune
  Dendroica fusca (Statius Müller, 1776) -- invalid -- Chipe garganta naranja, Blackburnian Warbler, paruline à gorge orangée
  Dendroica graciae S. F. Baird, 1865 -- invalid -- Grace's Warbler, Chipe ceja amarilla
  Dendroica kirtlandii (S. F. Baird, 1852) -- invalid -- Kirtland's Wood Warbler, Kirtland's Warbler, paruline de Kirtland
  Dendroica magnolia (A. Wilson, 1811) -- invalid -- Chipe de magnolia, Magnolia Warbler, paruline à tête cendrée
  Dendroica nigrescens (J. K. Townsend, 1837) -- invalid -- Chipe negrogris, Black-throated Gray Warbler, paruline grise, Black-throated Grey Warbler
  Dendroica occidentalis (J. K. Townsend, 1837) -- invalid -- Chipe cabeza amarilla, Hermit Warbler, paruline à tête jaune
  Dendroica palmarum (J. F. Gmelin, 1789) -- invalid -- Chipe playero, paruline à couronne rousse, Palm Warbler
  Dendroica pensylvanica (Linnaeus, 1766) -- invalid -- Chipe flanco castaño, Chestnut-sided Warbler, paruline à flancs marron
  Dendroica petechia (Linnaeus, 1766) -- invalid -- Chipe amarillo, Yellow Warbler, paruline jaune, American Yellow Warbler
  Dendroica striata (J. R. Forster, 1772) -- invalid -- Chipe gorra negra, Blackpoll Warbler, paruline rayée
  Dendroica tigrina (J. F. Gmelin, 1789) -- invalid -- Chipe atigrado, Cape May Warbler, paruline tigrée
  Dendroica townsendi (J. K. Townsend, 1837) -- invalid -- Townsend's Warbler, Chipe negroamarillo
  Dendroica virens (J. F. Gmelin, 1789) -- invalid -- Chipe dorso verde, Black-throated Green Warbler, paruline à gorge noire
  Dermochelyidae Fitzinger, 1843 -- valid -- leatherback turtles, Leatherback Sea Turtles
  Dermochelys Blainville, 1816 -- valid -- Leatherback Sea Turtles
  Dermochelys coriacea (Vandelli, 1761) -- valid -- leatherback turtle, Leatherback, Tortuga-marina laúd, tinglar, tortue luth, Leatherback Sea Turtle
  Desmognathus Baird, 1850 -- valid -- Dusky Salamanders, Seal Salamanders
  Desmognathus brimleyorum Stejneger, 1895 -- valid -- Ouachita Salamander, Ouachita Dusky Salamander
  Desmognathus ochrophaeus Cope, 1859 -- valid -- Mountain Dusky Salamander, salamandre des montagnes, Allegheny Mountain Dusky Salamander
  Desmognathus wrighti King, 1936 -- valid -- Pygmy Salamander
  Diadophis Baird and Girard, 1853 -- valid -- Ring-necked Snakes
  Diadophis punctatus (Linnaeus, 1766) -- valid -- Ring-necked Snake, Culebra de collar, Ringneck Snake, couleuvre à collier
  Dicamptodon Strauch, 1870 -- valid -- Pacific Giant Salamanders
  Dicamptodon ensatus (Eschscholtz, 1833) -- valid -- California Giant Salamander
  Dicamptodontidae Tihen, 1958 -- invalid -- Giant Salamanders, Olympic Salamanders, Pacific Giant Salamanders
  Dicrostonyx Gloger, 1841 -- valid -- Collared Lemmings
  Dicrostonyx exsul G. M. Allen, 1919 -- invalid -- St. Lawrence Island collared lemming
  Dicrostonyx groenlandicus (Traill, 1823) -- valid -- Northern Collared Lemming, Greenland Collared Lemming, Nearctic Collared Lemming, Collared Lemming
  Dicrostonyx hudsonius (Pallas, 1778) -- valid -- lemming d'Ungava, Labrador Collared Lemming, Ungava Collared Lemming
  Dicrostonyx kilangmiutak Anderson and Rand, 1945 -- invalid -- Victoria collared lemming, Kilangmiutak collared lemming
  Dicrostonyx nelsoni Merriam, 1900 -- valid -- Nelson's Collared Lemming
  Dicrostonyx richardsoni Merriam, 1900 -- valid -- Richardson's Collared Lemming
  Dicrostonyx rubricatus (Richardson, 1839) -- invalid -- Bering collared lemming, Tundra Collared Lemming
  Dicrostonyx torquatus (Pallas, 1778) -- valid -- Arctic Lemming, Collared Lemming, Palearctic Collared Lemming
  Dicrostonyx unalascensis Merriam, 1900 -- valid -- Aleutian Island Collared Lemming, Unalaska Collared Lemming
  Dicruridae Vigors, 1825 -- valid -- Drongos
  Dicrurus Vieillot, 1816 -- valid -- Drongos
  Dicrurus macrocercus Vieillot, 1817 -- valid -- Black Drongo
  Didelphidae Gray, 1821 -- valid -- opossoms, American opossums
  Didelphis Linnaeus, 1758 -- valid -- large American opossums
  Didelphis virginiana Kerr, 1792 -- valid -- Tlacuache norteño, opossum d'Amérique, Virginia Opossum
  Diomedea Linnaeus, 1758 -- valid -- Albatrosses
  Diomedea albatrus Pallas, 1769 -- invalid -- Short-tailed Albatross, Albatros rabón
  Diomedea cauta Gould, 1841 -- invalid -- Shy Albatross
  Diomedea chlororhynchos Gmelin, 1789 -- invalid -- Yellow-nosed Albatross, albatros à nez jaune
  Diomedea exulans Linnaeus, 1758 -- valid -- Wandering Albatross, Albatros hurleur
  Diomedea melanophris Temminck, 1828 -- invalid -- Black-browed Albatross
  Diomedea nigripes Audubon, 1839 -- invalid -- Black-footed Albatross, Albatros pata negra
  Diomedeidae G. R. Gray, 1840 -- valid -- Albatrosses, albatros
  Diphylla Spix, 1823 -- valid -- hairy-legged vampire bats
  Diphylla ecaudata Spix, 1823 -- valid -- Vampiro pata peluda, Hairy-legged Vampire Bat
  Diploglossus Wiegmann, 1834 -- valid -- Galliwasps
  Diploglossus costatus (Cope, 1862) -- invalid -- Costate Galliwasp
  Diploglossus pleii Duméril and Bibron, 1839 -- valid -- Puerto Rican Galliwasp
  Dipodidae Fischer de Waldheim, 1817 -- valid -- jumping mice, birch mice, Jerboas
  Dipodomys Gray, 1841 -- valid -- Kangaroo Rats
  Dipodomys agilis Gambel, 1848 -- valid -- Rata-canguro ágil, Agile Kangaroo Rat
  Dipodomys californicus Merriam, 1890 -- valid -- California Kangaroo Rat
  Dipodomys compactus True, 1889 -- valid -- Rata-canguro de Del Padre, Gulf Coast Kangaroo Rat
  Dipodomys deserti Stephens, 1887 -- valid -- Rata-canguro desértica, Desert Kangaroo Rat
  Dipodomys elator Merriam, 1894 -- valid -- Texas Kangaroo Rat
  Dipodomys elephantinus (Grinnell, 1919) -- invalid -- Big-eared Kangaroo Rat
  Dipodomys heermanni LeConte, 1853 -- valid -- Heermann's Kangaroo Rat
  Dipodomys heermanni heermanni LeConte, 1853 -- valid -- Heermann's kangaroo rat
  Dipodomys ingens (Merriam, 1904) -- valid -- Giant Kangaroo Rat
  Dipodomys merriami Mearns, 1890 -- valid -- Rata-canguro de Merriam, Merriam's Kangaroo Rat
  Dipodomys microps (Merriam, 1904) -- valid -- Chisel-toothed Kangaroo Rat
  Dipodomys nitratoides Merriam, 1894 -- valid -- San Joaquin Valley Kangaroo Rat, San Joaquin kangaroo rat, Fresno Kangaroo Rat
  Dipodomys ordii Woodhouse, 1853 -- valid -- Rata-canguro común, Ord's Kangaroo Rat
  Dipodomys panamintinus (Merriam, 1894) -- valid -- Panamint Kangaroo Rat
  Dipodomys spectabilis Merriam, 1890 -- valid -- Rata-canguro cola de bandera, Banner-tailed Kangaroo Rat
  Dipodomys stephensi (Merriam, 1907) -- valid -- Stephens' kangaroo rat, Stephens's Kangaroo Rat
  Dipodomys venustus (Merriam, 1904) -- valid -- Narrow-faced Kangaroo Rat
  Dipsosaurus Hallowell, 1854 -- valid -- Desert Iguanas
  Dipsosaurus dorsalis (Baird and Girard, 1852) -- valid -- Desert Iguana, Iguana de desierto, Common Desert Iguana
  Dolichonyx Swainson, 1827 -- valid -- Bobolinks
  Dolichonyx oryzivorus (Linnaeus, 1758) -- valid -- Bobolink, goglu des prés, Tordo arrocero
  Drepanidinae -- invalid -- Hawaiian Honeycreepers
  Drepanis Temminck, 1820 -- valid -- Mamos
  Drepanis funerea A. Newton, 1894 -- valid -- Black Mamo
  Drepanis pacifica (J. F. Gmelin, 1788) -- valid -- Hawaii Mamo
  Drymarchon Fitzinger, 1843 -- valid -- Indigo Snakes
  Drymarchon corais (F. Boie, 1827) -- valid -- Indigo Snake, Yellow-tail Cribo
  Drymobius Fitzinger, 1843 -- valid -- Neotropical Racers
  Drymobius margaritiferus (Schlegel, 1837) -- valid -- Central American Speckled Racer, Culebra-corredora de Petatillos, Speckled Racer
  Dryocopus F. Boie, 1826 -- valid
  Dryocopus pileatus (Linnaeus, 1758) -- valid -- Pileated Woodpecker, grand pic
  Ducula Hodgson, 1836 -- valid -- Pacific Pigeons
  Ducula oceanica (R. Lesson & Garnot, 1827) -- invalid -- Micronesian Pigeon, Micronesian Imperial Pigeon
  Ducula pacifica (J. F. Gmelin, 1789) -- valid -- Pacific Pigeon, Pacific Imperial Pigeon
  Dugong Lacépède, 1799 -- valid -- dugongs
  Dugong dugon (Müller, 1776) -- valid -- Dugong
  Dugongidae Gray, 1821 -- valid -- sea cows, dugongs
  Dumetella C. T. Wood, 1837 -- valid -- Catbirds
  Dumetella carolinensis (Linnaeus, 1766) -- valid -- Maullador gris, Gray Catbird, moqueur chat, Grey Catbird
  Eclectus Wagler, 1832 -- valid -- Eclectus Parrots
  Eclectus roratus (Statius Muller, 1776) -- valid -- Eclectus Parrot
  Ectopistes Swainson, 1827 -- valid -- Passenger Pigeons
  Ectopistes migratorius (Linnaeus, 1766) -- valid -- Passenger Pigeon, tourte voyageuse
  Edentata Vicq-d'Azyr, 1792 -- invalid -- anteaters, armadillos, edentates, sloths
  Egretta T. Forster, 1817 -- valid -- Plumed Egrets
  Egretta eulophotes (Swinhoe, 1860) -- valid -- Chinese Egret, Aigrette de Chine
  Egretta garzetta (Linnaeus, 1766) -- valid -- Little Egret, Aigrette garzette
  Egretta gularis (Bosc, 1792) -- valid -- Western Reef Heron, Aigrette à gorge blanche, Western Reef-Heron
  Egretta intermedia (Wagler, 1829) -- valid -- Plumed Egret, Intermediate Egret
  Egretta rufescens (Gmelin, 1789) -- valid -- Reddish Egret, Garceta rojiza, Aigrette roussâtre
  Egretta sacra (Gmelin, 1789) -- valid -- Pacific Reef-Heron, Pacific Reef Heron
  Egretta thula (Molina, 1782) -- valid -- Garceta pie-dorado, Snowy Egret, Aigrette neigeuse
  Egretta tricolor (Statius Muller, 1776) -- valid -- Garceta tricolor, Tricolored Heron, Aigrette tricolore
  Elaenia Sundevall, 1836 -- valid -- Elaenias
  Elaenia martinica (Linnaeus, 1766) -- valid -- Caribbean Elaenia, Elenia caribeña
  Elanoides Vieillot, 1818 -- valid -- Swallow-tailed Kites
  Elanoides forficatus (Linnaeus, 1758) -- valid -- American Swallow-tailed Kite, Milano tijereta, Swallow-tailed Kite, Milan à queue fourchue
  Elanus Savigny, 1809 -- valid -- Black-shouldered Kites
  Elanus caeruleus (Desfontaines, 1789) -- valid -- Black-shouldered Kite, Black-winged Kite
  Elaphe Fitzinger in Wagler, 1833 -- valid -- Corn Snakes, Fox Snakes, Rat Snakes, Ratsnakes
  Elaphe bairdi (Yarrow, 1880) -- invalid -- Baird's Rat Snake, Baird's Ratsnake, Culebra-ratonera de Baird
  Elaphe guttata (Linnaeus, 1766) -- invalid -- Corn Snake, Cornsnake, Culebra-ratonera de maiz
  Elaphe obsoleta (Say in James, 1823) -- invalid -- Texas Ratsnake
  Elaphe vulpina (Baird and Girard, 1853) -- invalid
  Elapidae F. Boie, 1827 -- valid -- Cobras, Coral Snakes, Elapids, Kraits, Coralsnakes
  Eleutherodactylus Duméril and Bibron, 1841 -- valid -- Coquis, Eleuths, Rainfrogs, Chirping Frogs, Robber Frogs, Rain Frogs
  Eleutherodactylus antillensis (Reinhardt and Lütken, 1863) -- valid -- Antillean Frog, Antillean Coqui
  Eleutherodactylus cochranae Grant, 1932 -- valid -- Whistling Frog, Whistling Coqui
  Eleutherodactylus cooki Grant, 1932 -- valid -- Rock Frog, Cook's Robber Frog, Rock Coqui
  Eleutherodactylus eneidae Rivero, 1959 -- valid -- Mottled Frog, Mottled Coqui
  Eleutherodactylus hedricki Rivero, 1963 -- valid -- Tree-hole Frog, Tree-hole Coqui
  Eleutherodactylus jasperi Drewry and Jones, 1976 -- valid -- Golden Coqui
  Eleutherodactylus lentus (Cope, 1862) -- valid -- Mute Frog, Mute Coqui
  Eleutherodactylus portoricensis Schmidt, 1927 -- valid -- Forest Coqui, Puerto Rican Coqui
  Eleutherodactylus wightmanae Schmidt, 1920 -- valid -- Wrinkled Coqui
  Elgaria coerulea (Wiegmann, 1828) -- valid -- Northern Alligator Lizard
  Elgaria kingii Gray, 1838 -- valid -- Arizona Alligator Lizard, Madrean Alligator Lizard
  Elgaria multicarinata (Blainville, 1835) -- valid -- Southern Alligator Lizard, Lagarto escorpión del Sur
  Elgaria panamintina (Stebbins, 1958) -- valid -- Panamint Alligator Lizard
  Emballonura Temminck, 1838 -- valid
  Emballonura semicaudata (Peale, 1848) -- valid -- Pacific Sheath-tailed Bat, Caroline Sheath-tailed Bat, Mariana Sheath-tailed Bat, Polynesian Sheath-tailed Bat
  Emballonura sulcata Miller, 1911 -- invalid -- Caroline Sheath-tailed Bat
  Emballonuridae Gervais, 1855 -- valid -- sac-winged bats, sheath-tailed bats
  Emberiza Linnaeus, 1758 -- valid -- Eurasian Buntings
  Emberiza pallasi (Cabanis, 1851) -- valid -- Bruant de Pallas, Escribano de Pallas, escrevedeira-de-pallas, Pallas' Reed-Bunting, Pallas's Bunting, Pallas's Reed Bunting
  Emberiza pusilla Pallas, 1776 -- valid -- Bruant nain, Escribano pigmeo, escrevedeira-pequena, Little Bunting
  Emberiza rustica Pallas, 1776 -- valid -- Bruant rustique, Escribano rústico, escrevedeira-rústica, Rustic Bunting
  Emberiza schoeniclus (Linnaeus, 1758) -- valid -- Bruant des roseaux, Escribano palustre, escrevedeira-dos-caniços, Eurasian Reed Bunting, Common Reed-Bunting, Common Reed Bunting, Reed Bunting
  Emberiza variabilis Temminck, 1836 -- valid -- Bruant gris, Escribano gris, Gray Bunting, Grey Bunting
  Emberizidae -- valid -- Buntings
  Emoia Gray, 1845 -- valid -- Emoias
  Emoia adspersa (Steindachner, 1870) -- valid -- Dark-sided Skink, Dateline Emoia, Dark-sided Emoia, Steindachner's Emo Skink
  Emoia arnoensis Brown and Marshall, 1953 -- valid -- Arno Skink, Arno Emoia, Emo Skink
  Emoia atrocostata (Lesson, 1830) -- valid -- Littoral Skink, Littoral Emoia, Littoral Whiptail-skink, Mangrove Skink
  Emoia boettgeri (Sternfeld, 1918) -- valid -- Boettger's Skink, Boettger's Emoia, Boettger's Emo Skink
  Emoia caeruleocauda (De Vis, 1892) -- valid -- Marianas Blue-tailed Skink, Pacific Blue-tailed Emoia, Marianas Blue-tailed Emoia, Pacific Bluetail Skink
  Emoia cyanogaster (Lesson, 1830) -- valid -- Blue-bellied Skink, Blue-bellied Emoia, Teal Emo Skink
  Emoia cyanura (Lesson, 1830) -- valid -- Azure-tailed Emoia, Azure-tailed skink, Copper-tailed Copper-striped Emoia, Copper-tailed Skink
  Emoia lawesii (Günther, 1874) -- valid -- Lawes' Emoia, Lawes' Skink, Pili Oua, Günther's Emo Skink
  Emoia mivarti (Boulenger, 1887) -- valid -- Mivart's Skink, Mivart's Emoia, Boulenger's Emo Skink
  Emoia nigra (Jacquinot and Guichenot, 1853) -- valid -- Black Skink, Black Emoia, Black Emo Skink
  Emoia ponapea Kiester, 1982 -- valid -- Ponape Forest Skink, Ponape Forest Emoia, Kiester's Emo Skink
  Emoia samoensis (A. H. A. Duméril in A. M. C. Duméril and A. H. A. Duméril, 1851) -- valid -- Samoan Skink, Samoan Emoia, Samoa Skink
  Emoia slevini Brown and Falanruw, 1972 -- valid -- Slevin's Skink, Marianas Emoia, Slevin's Emoia, Slevin's Emo Skink
  Empidonax Cabanis, 1855 -- valid -- Empidonax Flycatchers
  Empidonax alnorum Brewster, 1895 -- valid -- Mosquero ailero, Alder Flycatcher, moucherolle des aulnes
  Empidonax difficilis S. F. Baird, 1858 -- valid -- Western Flycatcher, Mosquero californiano, Pacific-slope Flycatcher
  Empidonax flaviventris (W. M. Baird & S. F. Baird, 1843) -- valid -- Mosquero vientre amarillo, Yellow-bellied Flycatcher, moucherolle à ventre jaune
  Empidonax fulvifrons (Giraud, 1841) -- valid -- Buff-breasted Flycatcher, Mosquero pecho leonado
  Empidonax minimus (W. M. Baird & S. F. Baird, 1843) -- valid -- Mosquero mímimo, Least Flycatcher, moucherolle tchébec
  Empidonax oberholseri A. R. Phillips, 1939 -- valid -- Dusky Flycatcher, Mosquero oscuro
  Empidonax traillii (Audubon, 1828) -- valid -- Mosquero saucero, Willow Flycatcher, moucherolle des saules
  Empidonax virescens (Vieillot, 1818) -- valid -- Mosquero verdoso, Acadian Flycatcher, moucherolle vert
  Empidonax wrightii S. F. Baird, 1858 -- valid -- Gray Flycatcher, Mosquero gris, Grey Flycatcher
  Empidonomus Cabanis & Heine, 1859 -- valid -- Variegated Flycatchers
  Empidonomus varius (Vieillot, 1818) -- valid -- Variegated Flycatcher
  Emydidae Rafinesque, 1815 -- valid -- pond turtles, terrapins, Emydid Turtles
  Emydoidea Gray, 1870 -- valid -- Blanding's Turtles
  Emydoidea blandingii (Holbrook, 1838) -- valid -- tortue mouchetée, Blanding's Turtle
  Enhydra Fleming, 1822 -- valid -- sea otters
  Enhydra lutris (Linnaeus, 1758) -- valid -- Sea Otter, Nutria Marina
  Enhydra lutris lutris (Linnaeus, 1758) -- valid -- Sea Otter
  Epicrates Wagler, 1830 -- valid -- Rainbow Boas, West Indian Boas, Greater Antillean Boas
  Epicrates inornatus (Reinhardt, 1843) -- invalid -- Puerto Rican Boa
  Epicrates monensis Zenneck, 1898 -- invalid -- Mona Boa
  Eptesicus Rafinesque, 1820 -- valid -- big brown bats
  Eptesicus fuscus (Palisot de Beauvois, 1796) -- valid -- Murciélago-moreno norteamericano, grande chauve-souris brune, Big Brown Bat
  Equidae Gray, 1821 -- valid -- Asses, Horses, Zebras
  Equus Linnaeus, 1758 -- valid -- Horses
  Equus asinus Linnaeus, 1758 -- valid -- burro, feral burro, Donkey, Wild Ass, Ass
  Equus caballus Linnaeus, 1758 -- valid -- feral horse, Horse
  Eremophila F. Boie, 1828 -- valid -- Horned Larks
  Erethizon F. Cuvier, 1823 -- valid -- New World porcupines
  Erethizon dorsatum (Linnaeus, 1758) -- invalid -- porcupine, common porcupine, porc-épic d'Amérique, Puercoespín norteamericano
  Erethizontidae Bonaparte, 1845 -- valid -- New World porcupines
  Eretmochelys Fitzinger, 1843 -- valid -- Hawksbill Sea Turtles
  Eretmochelys imbricata (Linnaeus, 1766) -- valid -- carey, Hawksbill, Tortuga-marina de carey, Hawksbill Sea Turtle
  Erignathus Gill, 1866 -- valid -- bearded seals
  Erophylla Miller, 1906 -- valid -- brown flower bats
  Erophylla sezekorni (Gundlach, 1861) -- valid -- Buffy Flower Bat
  Erythrura Swainson, 1837 -- valid -- Parrot-Finches
  Erythrura trichroa (Kittlitz, 1833) -- valid -- Blue-faced Parrot-Finch
  Eschrichtiidae Ellerman and Morrison-Scott, 1951 -- valid -- grey whales, gray whales
  Eschrichtius Gray, 1864 -- valid -- grey whales, gray whales
  Eschrichtius robustus (Lilljeborg, 1861) -- valid -- Gray Whale, Ballena gris, grey whale
  Estrilda Swainson, 1827 -- valid -- Waxbills
  Estrilda astrild (Linnaeus, 1758) -- valid -- Common Waxbill
  Estrilda caerulescens (Vieillot, 1817) -- valid -- Lavender Waxbill
  Estrilda melpoda (Vieillot, 1817) -- valid -- Orange-cheeked Waxbill
  Estrilda troglodytes (Lichtenstein, 1823) -- valid -- Black-rumped Waxbill
  Estrildidae Bonaparte, 1850 -- valid -- Waxbills, Munias
  Euderma H. Allen, 1892 -- valid -- spotted bats
  Euderma maculatum (J. A. Allen, 1891) -- valid -- Murciélago pinto, Spotted Bat, Pinto Bat
  Eudocimus Wagler, 1832 -- valid -- White Ibises
  Eudocimus albus (Linnaeus, 1758) -- valid -- Ibis blanco, White Ibis, American White Ibis, Ibis blanc
  Eudocimus ruber (Linnaeus, 1758) -- valid -- Scarlet Ibis, Ibis rouge
  Eugenes Gould, 1856 -- valid -- Magnificent Hummingbirds
  Eugenes fulgens (Swainson, 1827) -- valid -- Magnificent Hummingbird, Colibrí magnífico, Rivoli's Hummingbird
  Eugongylus Fitzinger, 1843 -- valid -- Short-legged Giant Skinks, Mastiff Skinks
  Eugongylus albofasciolatus (Günther, 1872) -- valid -- White-banded Giant Skink, White-banded Mastiff Skink, White-striped Cape Skink
  Eugongylus mentovarius (Boettger, 1895) -- valid -- Odd-chinned Mastiff Skink, Odd-chinned Giant Skink
  Eulampis F. Boie, 1831 -- valid -- Caribs
  Eulampis holosericeus (Linnaeus, 1758) -- valid -- Green-throated Carib
  Eumeces Wiegmann, 1834 -- valid -- Eumeces, Holarctic Skinks
  Eumeces anthracinus (Baird, 1849) -- invalid -- Coal Skink
  Eumeces callicephalus Bocourt, 1879 -- invalid -- Mountain Skink
  Eumeces egregius (Baird, 1858) -- invalid -- Mole Skink
  Eumeces fasciatus (Linnaeus, 1758) -- invalid -- Five-lined Skink
  Eumeces gilberti Van Denburgh, 1896 -- invalid -- Gilbert's Skink, Eslizón de Gilbert
  Eumeces inexpectatus Taylor, 1932 -- invalid -- Southeastern Five-lined Skink
  Eumeces laticeps (Schneider, 1801) -- invalid -- Broad-headed Skink
  Eumeces multivirgatus (Hallowell, 1857) -- invalid -- Many-lined Skink, Eslizón muchas líneas
  Eumeces obsoletus (Baird and Girard, 1852) -- invalid -- Great Plains Skink, Eslizón de la Gran Planicie
  Eumeces septentrionalis (Baird, 1858) -- invalid -- Prairie Skink
  Eumeces skiltonianus (Baird and Girard, 1852) -- invalid -- Western Skink, Eslizón occidental
  Eumeces tetragrammus (Baird, 1859) -- invalid -- Four-lined Skink, Eslizón cuatro líneas
  Eumeces tetragrammus tetragrammus (Baird, 1859) -- invalid -- Four-lined Skink, Short-lined Skink, Long-lined Skink
  Eumetopias Gill, 1866 -- valid -- northern sea lions
  Eumetopias jubatus (Schreber, 1776) -- valid -- Steller Sea Lion, Steller's sea lion, Northern Sea Lion
  Eumops Miller, 1906 -- valid -- mastiff-bats
  Eumops glaucinus (Wagner, 1843) -- valid -- Wagner's Mastiff-bat, Murciélago-con bonete de Wagner, Wagner's Bonneted Bat
  Eumops perotis (Schinz, 1821) -- valid -- Western Bonneted Bat, Western Mastiff-bat, Murciélago-con bonete mayor, Greater Bonneted Bat
  Eumops underwoodi Goodwin, 1940 -- valid -- Murciélago-con bonete de Underwood, Underwood's Mastiff-bat, Underwood's Bonneted Bat
  Euphagus Cassin, 1867 -- valid -- American Blackbirds
  Euphagus carolinus (Statius Muller, 1776) -- valid -- Tordo canadiense, Rusty Blackbird, quiscale rouilleux
  Euphagus cyanocephalus (Wagler, 1829) -- valid -- Brewer's Blackbird, quiscale de Brewer, Tordo ojo amarillo
  Euphonia Desmarest, 1806 -- valid -- Euphonias
  Euphonia musica (J. F. Gmelin, 1789) -- valid -- Antillean Euphonia
  Euplectes Swainson, 1829 -- valid -- Bishops
  Euplectes afer (Gmelin, 1789) -- valid -- Yellow-crowned Bishop
  Euplectes orix (Linnaeus, 1758) -- valid -- Red Bishop, Southern Red Bishop
  Euptilotis Gould, 1858 -- valid -- Eared Quetzal, Eared Trogons
  Euptilotis neoxenus (Gould, 1838) -- valid -- Quetzal oreillard, Eared Trogon, Eared Quetzal, Trogón orejón
  Eurycea Rafinesque, 1822 -- valid -- Brook Salamanders
  Eurycea aquatica Rose and Bush, 1963 -- valid -- Dark-sided Salamander, Brown-backed Salamander
  Eurycea bislineata (Green, 1818) -- valid -- Two-lined Salamander, salamandre à deux lignes, Northern Two-lined Salamander
  Eurycea longicauda (Green, 1818) -- valid -- Long-tailed Salamander
  Eurycea nana Bishop, 1941 -- valid -- San Marcos Salamander
  Eurycea tridentifera Mitchell and Reddell, 1965 -- invalid -- Comal Blind Salamander
  Eurynorhynchus Nilsson, 1821 -- invalid -- Spoonbill Sandpipers
  Eurynorhynchus pygmeus (Linnaeus, 1758) -- invalid -- Spoonbill Sandpiper, Spoon-billed Sandpiper, Bécasseau spatule
  Eurystomus Vieillot, 1816 -- valid -- Rollers
  Eurystomus orientalis (Linnaeus, 1766) -- valid -- Carraca oriental, Rolle oriental, Dollar Roller, Dollarbird, Dollar Bird, Oriental Dollarbird
  Euthlypis Cabanis, 1850 -- invalid -- Fan-tailed Warblers
  Euthlypis lachrymosa (Bonaparte, 1850) -- invalid -- Fan-tailed Warbler, Chipe de roca
  Falco Linnaeus, 1758 -- valid -- Falcons
  Falco columbarius Linnaeus, 1758 -- valid -- Merlin, Halcón esmerejón, Faucon émerillon, Esmerejón, esmerilhão
  Falco femoralis Temminck, 1822 -- valid -- Aplomado Falcon, Halcón fajado, Faucon aplomado, Halcón aleto, falcão-de-coleira
  Falco mexicanus Schlegel, 1850 -- valid -- Prairie Falcon, Halcón mexicano, Faucon des prairies, falcão-das-pradarias
  Falco peregrinus Tunstall, 1771 -- valid -- Peregrine Falcon, Halcón peregrino, Faucon pèlerin, falcão-peregrino
  Falco rusticolus Linnaeus, 1758 -- valid -- Gyrfalcon, Faucon gerfaut, Halcón gerifalte, gerifalte
  Falco sparverius Linnaeus, 1758 -- valid -- American Kestrel, Cernícalo americano, Crécerelle d'Amérique, quiriquiri, peneireiro-americano
  Falco subbuteo Linnaeus, 1758 -- valid -- Northern Hobby, Eurasian Hobby, Faucon hobereau, Alcotán europeo, ógea
  Falco tinnunculus Linnaeus, 1758 -- valid -- Eurasian Kestrel, Common Kestrel, Faucon crécerelle, Cernícalo vulgar, peneireiro-de-dorso-malhado, peneireiro
  Falconidae Leach, 1820 -- valid -- Caracaras, Falcons
  Falconiformes -- valid -- Falcons, Falconiforms, faucons
  Farancia Gray, 1842 -- valid -- Mud Snakes, Rainbow Snakes, Mudsnakes
  Farancia abacura (Holbrook, 1836) -- valid -- Mud Snake, Mudsnake, Red-bellied Mudsnake
  Farancia erytrogramma (Palisot de Beauvois, 1801) -- valid -- Rainbow Snake
  Felidae Fischer de Waldheim, 1817 -- valid -- cats
  Felis Linnaeus, 1758 -- valid -- small cats
  Felis concolor Linnaeus, 1771 -- invalid -- mountain lion
  Felis concolor concolor Linnaeus, 1771 -- invalid -- mountain lion
  Felis pardalis Linnaeus, 1758 -- invalid -- ocelot
  Felis silvestris Schreber, 1777 -- valid -- Wildcat, wild cat
  Felis wiedii Schinz, 1821 -- invalid -- margay
  Felis yaguarondi Lacépède, 1809 -- invalid -- jaguarundi
  Feresa Gray, 1870 -- valid -- pygmy killer whales
  Feresa attenuata Gray, 1874 -- valid -- Pygmy Killer Whale, Orca pigmea
  Ficedula Brisson, 1760 -- valid
  Ficedula narcissina (Temminck, 1836) -- valid -- Narcissus Flycatcher
  Ficedula parva (Bechstein, 1792) -- valid -- Red-breasted Flycatcher
  Ficimia Gray, 1849 -- valid -- Southern Hook-nosed Snakes, Mexican Hook-nosed Snakes
  Ficimia streckeri Taylor, 1931 -- valid -- Mexican Hook-nosed Snake, Tamaulipan Hook-nosed Snake, Culebra-naricilla mexicana, Tamaulipan Hooknose Snake, Mexican Hooknose Snake
  Foulehaio Reichenbach, 1852 -- valid -- Wattled Honeyeaters
  Foulehaio carunculata (J. F. Gmelin, 1788) -- invalid -- Wattled Honeyeater
  Francolinus Stephens, 1819 -- valid -- Francolins
  Francolinus erckelii (Rüppell, 1835) -- invalid -- Erckel's Francolin
  Francolinus francolinus (Linnaeus, 1766) -- valid -- Francolin noir, Francolín ventrinegro, francolim-escuro, Black Francolin
  Francolinus pondicerianus (J. F. Gmelin, 1789) -- invalid -- Francolin gris, Francolín gris, francolim-cinzento, Gray Francolin, Grey Francolin
  Fratercula Brisson, 1760 -- valid -- Puffins
  Fratercula arctica (Linnaeus, 1758) -- valid -- Atlantic Puffin, Macareux moine, Frailecillo atlántico, papagaio-do-mar
  Fratercula corniculata (J. F. Naumann, 1821) -- valid -- Horned Puffin, Macareux cornu, Frailecillo corniculado, papagaio-do-mar-de-chifres
  Fregata Lacepede, 1799 -- valid -- Frigatebirds
  Fregata ariel (G. R. Gray, 1845) -- valid -- Lesser Frigatebird, Frégate ariel
  Fregata magnificens Mathews, 1914 -- valid -- Fragata magnífica, Magnificent Frigatebird, Frégate superbe
  Fregata minor (Gmelin, 1789) -- valid -- Fragata pelágica, Great Frigatebird, Frégate du Pacifique
  Fregatidae Degland & Gerbe, 1867 -- valid -- Frigatebirds
  Fringilla Linnaeus, 1758 -- valid -- Bramblings, Chaffinches
  Fringilla coelebs Linnaeus, 1758 -- valid -- Common Chaffinch
  Fringilla montifringilla Linnaeus, 1758 -- valid -- Brambling
  Fringillidae Leach, 1820 -- valid -- gros-becs, moineaux, roselins, Old World Finches, Finches, Hawaiian Honeycreepers
  Fringillinae Leach, 1820 -- invalid -- Chaffinches, Bramblings
  Fulica Linnaeus, 1758 -- valid -- Coots
  Fulica americana Gmelin, 1789 -- valid -- Gallareta americana, American Coot, foulque d'Amérique
  Fulica atra Linnaeus, 1758 -- valid -- Eurasian Coot
  Fulica caribaea Ridgway, 1884 -- valid -- Caribbean Coot
  Gallicolumba Heck, 1849 -- valid -- Island Ground-Doves
  Gallicolumba canifrons (Hartlaub & Finsch, 1872) -- invalid -- Palau Ground-Dove, Palau Ground Dove
  Gallicolumba kubaryi (Finsch, 1880) -- invalid -- Truk Island Ground-Dove, White-fronted Ground Dove
  Gallicolumba stairi (G. R. Gray, 1856) -- invalid -- Friendly Ground-Dove, Tongan Ground Dove
  Gallicolumba xanthonura (Temminck, 1823) -- invalid -- White-throated Ground-Dove, White-throated Ground Dove
  Galliformes -- valid -- Fowls, Gallinaceous Birds, gallinacées, volaille
  Gallinago Brisson, 1760 -- valid -- Snipes
  Gallinago gallinago (Linnaeus, 1758) -- valid -- Agachona común, Common Snipe, Bécassine des marais, Agachadiza común, narceja-comum
  Gallinago hardwickii (J. E. Gray, 1831) -- valid -- Latham's Snipe, Japanese Snipe, Bécassine du Japon, Agachadiza japonesa, narceja-grande
  Gallinago megala Swinhoe, 1861 -- valid -- Swinhoe's Snipe, Bécassine de Swinhoe, Agachadiza del Baikal, narceja-de-swinhoe
  Gallinago stenura (Bonaparte, 1831) -- valid -- Pin-tailed Snipe, Bécassine à queue pointue, Agachadiza colirrara, narceja-siberiana, Pintail Snipe
  Gallinula Brisson, 1760 -- valid -- Moorhens
  Gallinula chloropus (Linnaeus, 1758) -- valid -- Gallineta frente roja, Common Moorhen, gallinule poule-d'eau
  Gallus Brisson, 1760 -- valid -- Junglefowl
  Gallus gallus (Linnaeus, 1758) -- valid -- Coq bankiva, Gallo bankiva, galo-vermelho, Red Junglefowl
  Gambelia Baird, 1859 -- valid -- Leopard Lizards
  Gambelia silus (Stejneger, 1890) -- invalid -- Blunt-nosed Leopard Lizard
  Gambelia wislizenii (Baird and Girard, 1852) -- valid -- Long-nosed Leopard Lizard, Lagartija-leopardo narigona, Longnose Leopard Lizard
  Garrulax Lesson, 1831 -- valid -- Laughing Thrushes
  Garrulax canorus (Linnaeus, 1758) -- valid -- Melodious Laughing Thrush, Hwamei
  Garrulax pectoralis (Gould, 1836) -- valid -- Greater Necklaced Laughing Thrush, Greater Necklaced Laughingthrush
  Gavia J. R. Forster, 1788 -- valid -- Loons
  Gavia adamsii (G. R. Gray, 1859) -- valid -- Colimbo de Adams, Yellow-billed Loon, Plongeon à bec blanc, White-billed Diver
  Gavia arctica (Linnaeus, 1758) -- valid -- Arctic Loon, Black-throated Loon, Plongeon arctique
  Gavia immer (Brunnich, 1764) -- valid -- Colimbo mayor, Common Loon, Great Northern Loon, Great Northern Diver, Plongeon huard
  Gavia pacifica (Lawrence, 1858) -- valid -- Pacific Loon, Colimbo pacífico, Plongeon du Pacifique, Pacific Diver
  Gavia stellata (Pontoppidan, 1763) -- valid -- Colimbo menor, Red-throated Loon, Red-throated Diver, Plongeon catmarin
  Gaviidae Allen, 1897 -- valid -- Loons, Divers
  Gaviiformes -- valid -- Loons, huarts
  Gehyra Gray, 1834 -- valid -- Web-toed Geckos, Dtellas
  Gehyra brevipalmata (W. Peters, 1874) -- valid -- Palauan Web-toed Gecko
  Gehyra mutilata (Wiegmann, 1834) -- valid -- Stump-toed Gecko, Geco plano, Mutilating Gecko
  Gehyra oceanica (Lesson, 1830) -- valid -- Big Tree Gecko, Oceanic Gecko
  Gehyra papuana Meyer, 1874 -- valid -- Papuan Web-toed Gecko
  Gekko Laurenti, 1768 -- valid -- Gekkos, Tropical Asian Geckos, Typical Geckos
  Gekko gecko (Linnaeus, 1758) -- valid -- Tokay Gekko, Tokay Gecko
  Gekko vittatus Houttuyn, 1782 -- valid -- Striped Gekko, Striped Gecko
  Gekkonidae -- valid -- Geckos
  Geochelone Fitzinger, 1835 -- valid -- geoclelone tortoises, Geochelone Tortoises, typical tortoises
  Geochelone carbonaria (Spix, 1824) -- invalid -- Red-footed Tortoise
  Geococcyx Wagler, 1831 -- valid -- Roadrunners
  Geococcyx californianus (Lesson, 1829) -- valid -- Greater Roadrunner, Correcaminos norteño
  Geomyidae Bonaparte, 1845 -- valid -- Pocket Gophers
  Geomys Rafinesque, 1817 -- valid -- Eastern Pocket Gophers
  Geomys arenarius Merriam, 1895 -- valid -- Tuza arenera, Desert Pocket Gopher
  Geomys bursarius (Shaw, 1800) -- valid -- Plains Pocket Gopher
  Geomys personatus True, 1889 -- valid -- Tuza texana, Texas Pocket Gopher
  Geomys pinetis Rafinesque, 1817 -- valid -- Southeastern Pocket Gopher
  Geopelia Swainson, 1837 -- valid -- Zebra Doves
  Geopelia striata (Linnaeus, 1766) -- valid -- Zebra Dove
  Geothlypis Cabanis, 1847 -- valid -- Yellowthroats
  Geothlypis poliocephala S. F. Baird, 1865 -- valid -- Gray-crowned Yellowthroat, Mascarita pico grueso, Paruline à calotte grise, Grey-crowned Yellowthroat
  Geothlypis trichas (Linnaeus, 1766) -- valid -- Mascarita común, Common Yellowthroat, Paruline masquée
  Geotrygon Gosse, 1847 -- valid -- Quail-Doves
  Geotrygon chrysia Bonaparte, 1855 -- valid -- Key West Quail-Dove
  Geotrygon montana (Linnaeus, 1758) -- valid -- Ruddy Quail-Dove, Paloma-perdiz rojiza
  Geotrygon mystacea (Temminck, 1811) -- valid -- Bridled Quail-Dove
  Gerrhonotus Wiegmann, 1828 -- valid -- Alligator Lizards
  Gerrhonotus liocephalus Wiegmann, 1828 -- valid -- Texas Alligator Lizard, Lagarto escorpión texano, Smooth-headed Alligator Lizard, Wiegmann's Alligator Lizard
  Glareola Brisson, 1760 -- valid -- Pratincoles
  Glareola maldivarum J. R. Forster, 1795 -- valid -- Oriental Pratincole, Glaréole orientale, Canastera oriental, perdiz-do-mar-oriental
  Glareolidae Brehm, 1831 -- valid -- Coursers, Pratincoles
  Glaucidium F. Boie, 1826 -- valid -- Pygmy-Owls
  Glaucidium brasilianum (J. F. Gmelin, 1788) -- valid -- Ferruginous Pygmy-Owl, Tecolote bajeño, Ferruginous Pygmy Owl
  Glaucidium gnoma Wagler, 1832 -- valid -- Northern Pygmy-Owl, Tecolote serrano, Mountain Pygmy Owl
  Glaucomys Thomas, 1908 -- valid -- American flying squirrels, New World Flying Squirrels
  Glaucomys sabrinus (Shaw, 1801) -- valid -- grand polatouche, Northern Flying Squirrel
  Glaucomys sabrinus sabrinus (Shaw, 1801) -- valid -- northern flying squirrel, Hudson Bay flying squirrel
  Glaucomys volans (Linnaeus, 1758) -- valid -- petit polatouche, Ardilla-voladora del sur, Southern Flying Squirrel
  Globicephala Lesson, 1828 -- valid -- pilot whales
  Globicephala macrorhynchus Gray, 1846 -- valid -- Short-finned Pilot Whale
  Globicephala melaena (Traill, 1809) -- invalid -- long-finned pilot whale
  Gonatodes Fitzinger, 1843 -- valid -- Bent-toed Geckos, American Bent-toed Geckos
  Gonatodes albogularis (Duméril and Bibron, 1836) -- valid -- Yellow-headed Gecko, Geco cabeza amarilla
  Gopherus Rafinesque, 1832 -- valid -- North American Tortoises, Gopher Tortoises
  Gopherus agassizii (Cooper, 1861) -- valid -- Desert Tortoise, Mohave Desert Tortoise, Agassiz's Desert Tortoise, Mojave Desert Tortoise
  Gopherus berlandieri (Agassiz, 1857) -- valid -- Galápago tamaulipeco, Texas Tortoise, Berlandier's Tortoise
  Gopherus polyphemus (Daudin, 1801) -- valid -- Gopher Tortoise
  Gracula Linnaeus, 1758 -- valid -- Hill Mynas
  Gracula religiosa Linnaeus, 1758 -- valid -- Hill Myna, Common Hill Myna
  Grampus Gray, 1828 -- valid -- grampus
  Grampus griseus (G. Cuvier, 1812) -- valid -- Risso's Dolphin, grampus, Delfín chato, gray grampus
  Graptemys Agassiz, 1857 -- valid -- Map Turtles
  Graptemys barbouri Carr and Marchand, 1942 -- valid -- Barbour's Map Turtle
  Graptemys caglei Haynes and McKown, 1974 -- valid -- Cagle's Map Turtle
  Graptemys flavimaculata Cagle, 1954 -- valid -- sawback turtle, Yellow-blotched Map Turtle, Yellow-blotched Sawback
  Graptemys geographica (Le Sueur, 1817) -- valid -- tortue géographique, Northern Map Turtle, Common Map Turtle
  Graptemys kohnii (Baur, 1890) -- invalid -- Mississippi Map Turtle
  Graptemys nigrinoda Cagle, 1954 -- valid -- Black-knobbed Map Turtle, Black-knobbed Sawback
  Graptemys oculifera (Baur, 1890) -- valid -- ringed sawback turtle, Ringed Map Turtle, Ringed Sawback
  Graptemys pseudogeographica (Gray, 1831) -- valid -- False Map Turtle
  Graptemys pulchra Baur, 1893 -- valid -- Alabama Map Turtle
  Graptemys versa Stejneger, 1925 -- valid -- Texas Map Turtle
  Gruidae -- valid -- Cranes
  Gruiformes -- valid -- Cranes, Rails, grues, râles
  Grus Brisson, 1760 -- valid -- Cranes
  Grus americana (Linnaeus, 1758) -- valid -- Whooping Crane, Grulla blanca
  Grus canadensis (Linnaeus, 1758) -- valid -- Grulla gris, Sandhill Crane, grue du Canada
  Grus grus (Linnaeus, 1758) -- valid -- Common Crane
  Guiraca Swainson, 1827 -- invalid -- Blue Grosbeaks
  Guiraca caerulea (Linnaeus, 1758) -- invalid -- Picogordo azul, Blue Grosbeak, guicara bleu
  Gulo Pallas, 1780 -- valid -- wolverines
  Gyalopion Cope, 1860 -- valid -- Hook-nosed Snakes, Western Hook-nosed Snakes
  Gyalopion canum (Cope, 1860) -- valid -- Western Hook-nosed Snake, Chihuahuan Hook-nosed Snake, Culebra-nariz ganchuda de Chihuahua, Western Hooknose Snake
  Gyalopion quadrangularis (Günther, 1893) -- invalid
  Gygis Wagler, 1832 -- valid -- White Terns
  Gygis alba (Sparrman, 1786) -- valid -- White Tern, Angel Tern, Gygis blanche, Charrán blanco común, grazina, Atoll Tern
  Gymnogyps Lesson, 1842 -- valid -- Condors
  Gymnogyps californianus (Shaw, 1797) -- valid -- California Condor, Cóndor californiano, Condor de Californie
  Gymnomyza Reichenow, 1914 -- valid -- Maos
  Gymnomyza samoensis (Hombron & Jacquinot, 1841) -- valid -- Mao, Méliphage mao, Mielero mao
  Gymnorhinus Wied-Neuwied, 1841 -- valid -- Pinyon Jay
  Gymnorhinus cyanocephalus Wied-Neuwied, 1841 -- valid -- Pinyon Jay, Chara piñonera
  Gyrinophilus Cope, 1869 -- valid -- Cave Salamanders, Spring Salamanders
  Haematopodidae -- valid -- huîtriers, Oystercatchers
  Haematopus Linnaeus, 1758 -- valid -- Oystercatchers
  Haematopus bachmani Audubon, 1838 -- valid -- Black Oystercatcher, Ostrero negro, Huîtrier de Bachman, American Black Oystercatcher, Ostrero Negro Norteamericano, piru-piru-preto-norteamericano
  Haematopus ostralegus Linnaeus, 1758 -- valid -- Eurasian Oystercatcher, Huîtrier pie, Ostrero euroasiático, ostraceiro
  Haematopus palliatus Temminck, 1820 -- valid -- Ostrero americano, American Oystercatcher, Huîtrier d'Amérique, Ostrero pío americano, piru-piru
  Halcyon Swainson, 1821 -- valid -- Blue Kingfishers
  Halcyon chloris (Boddaert, 1783) -- invalid -- White-collared Kingfisher
  Halcyon cinnamonina Swainson, 1821 -- invalid -- Micronesian Kingfisher
  Haliaeetus Savigny, 1809 -- valid -- Fish Eagles
  Haliaeetus albicilla (Linnaeus, 1758) -- valid -- White-tailed Eagle, Pygargue à queue blanche
  Haliaeetus albicilla albicilla (Linnaeus, 1758) -- valid -- White-tailed Eagle
  Haliaeetus leucocephalus (Linnaeus, 1766) -- valid -- Águila cabeza blanca, Bald Eagle, Pygargue à tête blanche
  Haliaeetus pelagicus (Pallas, 1811) -- valid -- Steller's Sea-Eagle, Pygargue empereur, Steller's Sea Eagle
  Halichoerus Nilsson, 1820 -- valid -- gray seals
  Halichoerus grypus (Fabricius, 1791) -- valid -- Gray Seal, Atlantic gray seal, Atlantic seal, Baltic gray seal, horsehead, phoque gris
  Heliomaster Bonaparte, 1850 -- valid -- Starthroats
  Heliomaster constantii (Delattre, 1843) -- valid -- Plain-capped Starthroat, Colibrí picudo
  Helmitheros Rafinesque, 1819 -- valid -- Worm-eating Warblers
  Helmitheros vermivorus (J. F. Gmelin, 1789) -- invalid -- Chipe gusanero, Worm-eating Warbler, paruline vermivore
  Heloderma Wiegmann, 1829 -- valid -- Beaded Lizards, Gila Monsters
  Heloderma suspectum Cope, 1869 -- valid -- Gila Monster, Lagarto de Gila
  Helodermatidae Gray, 1837 -- valid -- Venomous Lizards, Beaded Lizards, Gila Monsters
  Hemidactylus Gray, 1825 -- valid -- House Geckos, Half-toed Geckos
  Hemidactylus brookii Gray, 1845 -- valid -- Brook's House Gecko
  Hemidactylus frenatus Schlegel, 1836 -- valid -- Common House Gecko, Geco-casero bocón, Bridled House Gecko
  Hemidactylus garnotii Duméril and Bibron, 1836 -- valid -- Fox Gecko, Indo-Pacific Gecko, Indopacific Gecko, Indo-Pacific House Gecko
  Hemidactylus mabouia (Moreau De Jonnès, 1818) -- valid -- Cosmopolitan House Gecko, Afro-American House Gecko, Geco-casero tropical, Afroamerican house gecko, Wood Slave
  Hemidactylus turcicus (Linnaeus, 1758) -- valid -- Mediterranean Gekko, Mediterranean House Gecko, Geco-casero del Mediterráneo, Mediterranean Gecko
  Hemignathus M. H. K. Lichtenstein, 1839 -- valid -- 'Amakihis
  Hemignathus lucidus M. H. K. Lichtenstein, 1839 -- valid -- Honeycreeper, Nukupu'u, Nukupuu
  Hemignathus munroi Pratt, 1979 -- invalid -- 'Akiapola'au, Akiapolaau
  Hemignathus obscurus (J. F. Gmelin, 1788) -- invalid -- Hawaiian 'Akialoa, Lesser Akialoa
  Hemignathus parvus (Stejneger, 1887) -- invalid -- 'Anianiau, Anianiau
  Hemignathus procerus Cabanis, 1890 -- invalid -- Kauai 'Alialoa
  Hemignathus sagittirostris (Rothschild, 1892) -- invalid -- Greater 'Amakihi, Greater Amakihi
  Hemignathus virens (J. F. Gmelin, 1788) -- invalid -- Common 'Amakihi, Hawaii Amakihi
  Hemiphyllodactylus Bleeker, 1860 -- valid -- Small Tree Geckos, Gypsy Geckos, Tree Geckos
  Hemiphyllodactylus typus Bleeker, 1860 -- valid -- Small Tree Gecko, Indopacific Tree Gecko, Indo-Pacific Tree Gecko, Indo-Pacific slender gecko
  Hemiphyllodactylus typus typus Bleeker, 1860 -- invalid -- Small Tree Gecko, Common Indo-Pacific Tree Gecko
  Herpestes Illiger, 1811 -- valid -- mongooses
  Herpestes auropunctatus (Hodgson, 1836) -- invalid -- Indian mongoose
  Herpestidae Bonaparte, 1845 -- valid -- civets, mongooses
  Heterodon Latreille in Sonnini and Latreille, 1801 -- valid -- Hog-nosed Snakes, North American Hog-nosed Snakes
  Heterodon nasicus Baird and Girard, 1852 -- valid -- Western Hog-nosed Snake, Culebra-nariz de cerdo occidental, Western Hognose Snake, Plains Hognose Snake, Plains Hog-nosed Snake
  Heterodon nasicus nasicus Baird and Girard, 1852 -- invalid -- Plains Hognose Snake
  Heterodon simus (Linnaeus, 1766) -- valid -- Southern Hog-nosed Snake, Southern Hognose Snake
  Heteromyidae Gray, 1868 -- valid -- heteromyid rodents, Kangaroo Mice, Kangaroo Rats, Pocket Mice
  Heteroscelus Baird, 1858 -- invalid -- Tattlers
  Heteroscelus brevipes (Vieillot, 1816) -- invalid -- Gray-tailed Tattler, Grey-tailed Tattler
  Heteroscelus incanus (J. F. Gmelin, 1789) -- invalid -- Playero vagabundo, Wandering Tattler
  Himantopus Brisson, 1760 -- valid -- Stilts
  Himantopus mexicanus (P. L. S. Müller, 1776) -- valid -- Ae'o, Hawaiian Stilt, Candelero americano, Black-necked Stilt, echasse d'Amérique, Échasse d'Amérique, Cigüeñuela de Cuello Negro, pernilongo-de-costas-negras
  Himatione Cabanis, 1850 -- valid -- 'Apapanes
  Hirundapus Hodgson, 1837 -- valid -- Needletails
  Hirundapus caudacutus (Latham, 1801) -- valid -- White-throated Needletail
  Hirundinidae Rafinesque, 1815 -- valid
  Hirundo Linnaeus, 1758 -- valid -- Barn Swallows
  Hirundo fulva Vieillot, 1808 -- invalid -- Cave Swallow, Golondrina pueblera
  Hirundo pyrrhonota Vieillot, 1817 -- invalid -- Cliff Swallow, Golondrina risquera
  Hirundo rustica Linnaeus, 1758 -- valid -- Golondrina tijereta, Barn Swallow, hirondelle rustique
  Histrionicus R. Lesson, 1828 -- valid -- Harlequin Ducks
  Histrionicus histrionicus (Linnaeus, 1758) -- valid -- Pato arlequín, Harlequin Duck, Arlequin plongeur, pato-arlequim
  Holbrookia Girard, 1851 -- valid -- Earless Lizards, Lesser Earless Lizards
  Holbrookia lacerata Cope, 1880 -- valid -- Spot-tailed Earless Lizard, Lagartija-sorda cola punteada, Plateau Earless Lizard, Northern Spot-tailed Earless Lizard
  Holbrookia maculata Girard, 1851 -- valid -- Lesser Earless Lizard, Common Earless Lizard, Lagartija-sorda menor, Common Lesser Earless Lizard
  Holbrookia propinqua Baird and Girard, 1852 -- valid -- Keel-scaled Earless Lizard, Keeled Earless Lizard, Lagartija-sorda carinata
  Hominidae Gray, 1825 -- valid -- man-like primates, Great Apes
  Homo Linnaeus, 1758 -- valid -- hominoids
  Homo sapiens Linnaeus, 1758 -- valid -- man, Humans, Human
  Hydrobatidae Mathews, 1912 -- valid -- Storm Petrels
  Hyla cadaverina Cope, 1866 -- invalid -- California Treefrog
  Hyla chrysoscelis Cope, 1880 -- invalid -- Cope's Gray Treefrog
  Hyla cinerea (Schneider, 1799) -- invalid -- Green Tree Frog, Green Treefrog
  Hyla eximia Baird, 1854 -- invalid -- Mountain Treefrog, Rana-de árbol de montaña
  Hyla femoralis Daudin, 1800 -- invalid -- Pine Woods Treefrog
  Hyla squirella Daudin, 1800 -- invalid -- Squirrel Treefrog
  Hylactophryne Lynch, 1968 -- invalid -- Barking Frogs
  Hylactophryne augusti (Dugès in Brocchi, 1879) -- invalid -- Barking Frog
  Hylidae Rafinesque, 1815 -- valid -- Hylids, New World Tree Frogs, Treefrogs, hylidés, hylidés arboricoles, Hylid Frogs
  Hylocharis F. Boie, 1831 -- valid
  Hylocharis leucotis (Vieillot, 1818) -- invalid -- White-eared Hummingbird, Zafiro oreja blanca
  Hylocichla S. F. Baird, 1864 -- valid -- Wood Thrushes
  Hylocichla mustelina (Gmelin, 1789) -- valid -- Zorzal maculado, Wood Thrush, grive des bois
  Hyperoodon Lacépède, 1804 -- valid -- bottle-nosed whales, bottlenose whales
  Hyperoodon ampullatus (Forster, 1770) -- valid -- North Atlantic bottle-nosed whale, Northern Bottlenose Whale, baleine à bec commune, northern bottle-nosed whale, North Atlantic bottlenose whale
  Hyperoodon planifrons Flower, 1882 -- valid -- southern bottle-nosed whale, Southern Bottlenose Whale, Ballena-picuda frente plana
  Hypopachus variolosus (Cope, 1866) -- valid -- Rana-oveja común, Northern Sheep Frog, Sheep Frog
  Hypsiglena Cope, 1860 -- valid -- Night Snakes, Nightsnakes
  Hypsiglena torquata (Günther, 1860) -- valid -- Night Snake, Nightsnake, Culebra-nocturna ojo de gato, Sinaloan Nightsnake
  Icteria Vieillot, 1808 -- valid -- Chats
  Icteria virens (Linnaeus, 1758) -- valid -- Buscabreña, Yellow-breasted Chat, Paruline polyglotte
  Icterus Brisson, 1760 -- valid -- American Orioles
  Icterus cucullatus Swainson, 1827 -- valid -- Hooded Oriole, Bolsero encapuchado
  Icterus dominicensis (Linnaeus, 1766) -- valid -- Black-cowled Oriole, Bolsero dominico, Greater Antillean Oriole
  Icterus galbula (Linnaeus, 1758) -- valid -- Northern Oriole, Bolsero de Baltimore, Baltimore Oriole, oriole du nord
  Icterus graduacauda Lesson, 1839 -- valid -- Audubon's Oriole, Bolsero cabeza negra
  Icterus gularis (Wagler, 1829) -- valid -- Altamira Oriole, Bolsero de Altamira
  Icterus icterus (Linnaeus, 1766) -- valid -- Troupial, Venezuelan Troupial
  Icterus parisorum Bonaparte, 1838 -- valid -- Scott's Oriole, Bolsero tunero
  Icterus pectoralis (Wagler, 1829) -- valid -- Spot-breasted Oriole, Bolsero pecho manchado
  Icterus pustulatus (Wagler, 1829) -- valid -- Streak-backed Oriole, Bolsero dorso rayado
  Icterus spurius (Linnaeus, 1766) -- valid -- Bolsero castaño, Orchard Oriole, oriole des vergers
  Icterus wagleri P. L. Sclater, 1857 -- valid -- Black-vented Oriole, Bolsero de Wagler
  Ictinia Vieillot, 1816 -- valid -- Mississippi Kites
  Idionycteris Anthony, 1923 -- valid -- Allen's big-eared bats
  Idionycteris phyllotis (G. M. Allen, 1916) -- valid -- Murciélago-mula de Allen, Allen's Big-eared Bat, Lappet-browed Bat, Mexican Big-eared Bat
  Iguana Laurenti, 1768 -- valid -- Iguanas, Green Iguanas
  Iguana iguana (Linnaeus, 1758) -- valid -- Green Iguana, Iguana verde, iguane commun, Common Green Iguana
  Iguanidae -- valid -- American Arboreal Lizards, Chuckwallas, Iguanas, Iguanids
  Isolobodon J. A. Allen, 1916 -- valid -- Puerto Rican hutias
  Isolobodon portoricensis J. A. Allen, 1916 -- valid -- Puerto Rico hutia, Puerto Rican Hutia
  Ixobrychus Billberg, 1828 -- valid -- Least Bitterns
  Ixobrychus eurhythmus (Swinhoe, 1873) -- valid -- Schrenk's Bittern, Von Schrenck's Bittern
  Ixobrychus exilis (Gmelin, 1789) -- valid -- Avetoro mínimo, Least Bittern, Petit Blongios
  Ixobrychus sinensis (Gmelin, 1789) -- valid -- Chinese Bittern, Yellow Bittern, Blongios de Chine
  Ixoreus Bonaparte, 1854 -- valid -- Varied Thrushes
  Ixoreus naevius (Gmelin, 1789) -- valid -- Mirlo pecho cinchado, Varied Thrush, grive à collier
  Jabiru Hellmayr, 1906 -- valid -- Jabirus
  Jabiru mycteria (Lichtenstein, 1819) -- valid -- Jabiru, Cigüeña jabirú, Jabiru d'Amérique
  Jacana Brisson, 1760 -- valid -- Jacanas
  Jacana spinosa (Linnaeus, 1758) -- valid -- Northern Jacana, Jacana norteña, Jacana du Mexique, Jacana centroamericana, jaçanã-de-fronte-amarela
  Jacanidae Chenu & Des Murs, 1854 -- valid -- Jacanas
  Junco Wagler, 1831 -- valid -- Juncos
  Junco hyemalis (Linnaeus, 1758) -- valid -- junco, Junco ojo oscuro, Dark-eyed Junco, junco ardoisé
  Junco phaeonotus Wagler, 1831 -- valid -- Junco aux yeux jaunes, Junco ojilumbre, Yellow-eyed Junco, Junco ojo de lumbre
  Jynx Linnaeus, 1758 -- valid -- Wrynecks
  Jynx torquilla Linnaeus, 1758 -- valid -- Eurasian Wryneck
  Kinosternidae Agassiz, 1857 -- valid -- Musk Turtles, Mud Turtles
  Kinosternon Spix, 1824 -- valid -- mud turtles, American Mud Turtles, American musk turtles
  Kinosternon baurii (Garman, 1891) -- valid -- Striped Mud Turtle
  Kinosternon flavescens (Agassiz, 1857) -- valid -- Tortuga-pecho quebrado amarilla, Yellow Mud Turtle
  Kinosternon hirtipes Wagler, 1830 -- valid -- Mexican mud turtle, Mexican Rough-footed Mud Turtle, Tortuga-pecho quebrado pata rugosa, Rough-footed Mud Turtle
  Kinosternon sonoriense Le Conte, 1854 -- valid -- Sonoran mud turtle, Tortuga-pecho quebrado sonorense, Sonora Mud Turtle
  Kinosternon subrubrum (Lacépède, 1788) -- invalid -- Eastern Mud Turtle
  Kogia Gray, 1846 -- valid -- pygmy sperm whales, small sperm whales
  Kogia breviceps (Blainville, 1838) -- valid -- Pygmy Sperm Whale, Cachalote pigmeo
  Kogia sima (Owen, 1866) -- valid -- Dwarf Sperm Whale
  Kogia simus (Owen, 1866) -- invalid -- dwarf sperm whale
  Lagenodelphis Fraser, 1956 -- valid -- Borneau dolphins
  Lagenodelphis hosei Fraser, 1956 -- valid -- Fraser's Dolphin, Delfín de Fraser
  Lagenorhynchus Gray, 1846 -- valid -- white-sided dolphins, white-beaked dolphins
  Lagenorhynchus acutus (Gray, 1828) -- valid -- Atlantic White-sided Dolphin, dauphin à flancs blancs
  Lagenorhynchus albirostris (Gray, 1846) -- valid -- White-beaked Dolphin, dauphin à nez blanc
  Lagenorhynchus obliquidens Gill, 1865 -- valid -- Pacific White-sided Dolphin, Delfín costado blanco
  Lagomorpha Brandt, 1855 -- valid -- coelho, tapeti, lagomorphs, Rabbits, Hares, Pikas
  Lagopus Brisson, 1760 -- valid -- Ptarmigans
  Lagopus lagopus (Linnaeus, 1758) -- valid -- Lagópodo común, lagopo-ruivo, Willow Grouse, Willow Ptarmigan, lagopède des saules
  Lagopus leucurus (Richardson, 1831) -- invalid -- White-tailed Ptarmigan
  Lagopus mutus (Montin, 1781) -- invalid -- Rock Ptarmigan, lagopède alpin
  Lagurus Gloger, 1841 -- valid -- Sagebrush Voles
  Lagurus curtatus (Cope, 1868) -- invalid -- Sagebrush Vole
  Lampornis Swainson, 1827 -- valid -- Blue-throated Hummingbirds
  Lampornis clemenciae (R. Lesson, 1830) -- valid -- Blue-throated Hummingbird, Colibrí garganta azul, Blue-throated Mountaingem
  Lamprolepis Fitzinger, 1843 -- valid -- Tree Skinks, Treeskinks
  Lamprolepis smaragdina (Lesson, 1829) -- valid -- Green Treeskink, Green Tree Skink, Emerald Skink
  Lampropeltis Fitzinger, 1843 -- valid -- Kingsnakes, Milk Snakes
  Lampropeltis calligaster (Harlan, 1827) -- valid -- Prairie Kingsnake, Yellow-bellied Kingsnake
  Lampropeltis pyromelana (Cope, 1867) -- valid -- Sonoran Mountain Kingsnake, Culebra-real sonorense, Arizona Mountain Kingsnake
  Lampropeltis zonata (Lockington ex Blainville, 1876) -- valid -- California Mountain Kingsnake, Culebra-real californiana, St. Helena Mountain Kingsnake
  Lampropholis Fitzinger, 1843 -- valid -- Indo-Australian Ground Skinks, sunskinks
  Lampropholis delicata (De Vis, 1888) -- valid -- Garden Skink, Metallic Skink, Plague Skink, Rainbow Skink, Grass Skink
  Laniidae Rafinesque, 1815 -- valid -- Shrikes
  Lanius Linnaeus, 1758 -- valid -- Shrikes
  Lanius cristatus Linnaeus, 1758 -- valid -- Brown Shrike
  Lanius excubitor Linnaeus, 1758 -- valid -- Northern Shrike, pie-grièche grise, Great Grey Shrike
  Lanius ludovicianus Linnaeus, 1766 -- valid -- Alcaudón verdugo, Loggerhead Shrike, pie-grièche migratrice
  Larinae -- invalid
  Larus Linnaeus, 1758 -- valid -- Gulls, Ivory Gulls, Kittiwakes, Ross' Gulls, Sabine's Gulls
  Larus argentatus Pontoppidan, 1763 -- valid -- Gaviota plateada, Herring Gull, Goéland argenté, European Herring Gull, Gaviota argéntea europea, gaivota-argêntea
  Larus atricilla Linnaeus, 1758 -- invalid -- Gaviota reidora, Laughing Gull, mouette atricille
  Larus belcheri Vigors, 1829 -- valid -- Band-tailed Gull, Belcher's Gull, Goéland siméon, Gaviota simeón, gaivota-de-rabo-bandeado
  Larus californicus Lawrence, 1854 -- valid -- Gaviota californiana, California Gull, Goéland de Californie, gaivota-da-califórnia
  Larus canus Linnaeus, 1758 -- valid -- Gaviota cana, Mew Gull, Goéland cendré, Common Gull, famego
  Larus delawarensis Ord, 1815 -- valid -- Gaviota pico anillado, Ring-billed Gull, Goéland à bec cerclé, Gaviota de Delaware, gaivota-de-bico-riscado
  Larus fuscus Linnaeus, 1758 -- valid -- Gaviota sombría, Lesser Black-backed Gull, Goéland brun, gaivota-da-asa-escura
  Larus glaucescens J. F. Naumann, 1840 -- valid -- Glaucous-winged Gull, Gaviota ala glauca, Goéland à ailes grises, Gaviota de Bering, gaivota-do-mar-de-bering
  Larus glaucoides B. Meyer, 1822 -- valid -- Iceland Gull, Goéland arctique, Gaviota groenlandesa, gaivota-branca
  Larus heermanni Cassin, 1852 -- valid -- Heermann's Gull, Gaviota ploma, Goéland de Heermann, Gaviota mexicana, gaivota-cinzenta-setentrional
  Larus hyperboreus Gunnerus, 1767 -- valid -- Gaviota blanca, Glaucous Gull, Goéland bourgmestre, Gavión hiperbóreo, gaivotão-branco
  Larus livens Dwight, 1919 -- valid -- Yellow-footed Gull, Gaviota pata amarilla, Goéland de Cortez, Gaviota de Cortés, gaivota-de-pés-amarelos
  Larus marinus Linnaeus, 1758 -- valid -- Great Black-backed Gull, Goéland marin, Gavión atlántico, gaivotão-real
  Larus minutus Pallas, 1776 -- invalid -- Gaviota mínima, Little Gull, mouette pygmée
  Larus occidentalis Audubon, 1839 -- valid -- Gaviota occidental, Western Gull, Goéland d'Audubon, gaivota-de-pés-rosados
  Larus philadelphia (Ord, 1815) -- invalid -- Gaviota de Bonaparte, Bonaparte's Gull, mouette de Bonaparte
  Larus pipixcan Wagler, 1831 -- invalid -- Gaviota de Franklin, Franklin's Gull, mouette de Franklin
  Larus ridibundus Linnaeus, 1766 -- invalid -- Common Black-headed Gull, Gaviota encapuchada, Black-headed Gull, mouette rieuse
  Larus schistisagus Stejneger, 1884 -- valid -- Slaty-backed Gull, Goéland à manteau ardoisé, Gaviota de Kamchatka, gaivota-de-dorso-ardósia
  Larus thayeri W. S. Brooks, 1915 -- invalid -- Gaviota de Thayer, Thayer's Gull, Goéland de Thayer
  Lasionycteris Peters, 1866 -- valid -- silver-haired bats
  Lasionycteris noctivagans (Le Conte, 1831) -- valid -- Murciélago pelo plateado, chauve-souris argentée, Silver-haired Bat, Black Bat, Silver-black Bat
  Lasiurus Gray, 1831 -- valid -- hairy-tailed bats, red bats
  Lasiurus borealis (Müller, 1776) -- valid -- red bat, chauve-souris rousse, Murciélago-cola peluda rojizo, Eastern Red Bat
  Lasiurus cinereus (Palisot de Beauvois, 1796) -- invalid -- Murciélago-cola peluda canoso, chauve-souris cendrée, Hoary Bat, Northern Hoary Bat
  Lasiurus ega (Gervais, 1856) -- invalid -- Murciélago-cola peluda amarillo, Southern Yellow Bat
  Lasiurus intermedius H. Allen, 1862 -- invalid -- Murciélago-cola peluda norteño, Northern Yellow Bat
  Lasiurus seminolus (Rhoads, 1895) -- valid -- Seminole Bat
  Laterallus G. R. Gray, 1855 -- valid -- Black Rails
  Laterallus jamaicensis (Gmelin, 1789) -- valid -- Polluela negra, Black Rail, râle noir
  Laticauda Laurenti, 1768 -- valid -- Sea Kraits, Seakraits
  Leiocephalus Gray, 1827 -- valid -- Curly-tailed Lizards
  Leiocephalus carinatus Gray, 1827 -- valid -- Carinate Curly-tailed Lizard, Northern Curly-tailed Lizard
  Leiocephalus eremitus (Cope, 1868) -- valid -- Navassa Curly-tailed Lizard, Navassa Curlytail Lizard
  Leiocephalus schreibersii (Gravenhorst, 1838) -- valid -- Schreiber's Curly-tailed Lizard, Red-sided Curly-tailed Lizard
  Leiopelmatidae Mivart, 1869 -- valid -- Leiopelmatids, Ribbed Frogs, Tailed Frogs
  Leiothrix Swainson, 1832 -- valid -- Leiothrixes
  Leiothrix lutea (Scopoli, 1786) -- valid -- Red-billed Leiothrix
  Lemmus Rochebrune, 1843 -- invalid -- brown lemmings
  Lemmus sibiricus (Kerr, 1792) -- valid -- Black-footed Lemming, Siberian Brown Lemming, Brown Lemming, Siberian Lemming
  Lepidochelys Fitzinger, 1843 -- valid -- Ridley Sea Turtles
  Lepidochelys kempi (Garman, 1880) -- invalid -- Tortuga-marina escamosa-del Atlántico
  Lepidochelys olivacea (Eschscholtz, 1829) -- valid -- Pacific ridley, Olive Ridley, Tortuga-marina escamosa-del Pacífico, Olive Ridley Sea Turtle, Pacific Ridley Sea Turtle
  Lepidodactylus Fitzinger, 1843 -- valid -- Scaly-toed Geckos, Indo-Pacific Geckos
  Lepidodactylus lugubris (Duméril and Bibron, 1836) -- valid -- Mourning Gecko
  Leporidae Fischer, 1817 -- valid -- Hares, Rabbits
  Leptodactylidae Werner, 1896 -- valid -- Leptodactylids, Neotropical Frogs, grenouilles néotropicales, Leptodactylid Frogs
  Leptodactylus Fitzinger, 1826 -- valid -- Foam-nest Frogs, White-lipped Frogs, Neotropical Grass Frogs, Thin-toed Frogs, Neotropical glass frogs
  Leptodactylus fragilis (Brocchi, 1877) -- valid -- White-lipped Frog, Mexican White-lipped Frog
  Leptodeira Fitzinger, 1843 -- valid -- Cat-eyed Snakes
  Leptodeira septentrionalis (Kennicott in Baird, 1859) -- valid -- Cat-eyed Snake, Culebra-ojo de gato norteña o manchada, Northern Cat-eyed Snake
  Leptonycteris Lydekker, 1891 -- valid -- Mexican long-nosed bats
  Leptonycteris nivalis (Saussure, 1860) -- valid -- Murciélago-hocicudo mayor, Mexican Long-nosed Bat, Greater Long-nosed Bat
  Leptonycteris sanborni Hoffmeister, 1957 -- invalid -- Sanborn's Long-nosed Bat
  Leptotila Swainson, 1837 -- valid -- White-tipped Doves
  Leptotila verreauxi Bonaparte, 1855 -- valid -- White-tipped Dove, Paloma arroyera
  Leptotyphlopidae Stejneger, 1892 -- valid -- Slender Blind Snakes, Thread Snakes, Threadsnakes
  Leptotyphlops Fitzinger, 1843 -- valid -- Slender Blind Snakes, Threadsnakes
  Leptotyphlops dulcis (Baird and Girard, 1853) -- invalid -- Texas Slender Blind Snake, Texas Threadsnake, Serpiente-lombriz texana
  Lepus Linnaeus, 1758 -- valid -- Hares, Jackrabbits, Jack Rabbits
  Lepus alleni Mearns, 1890 -- valid -- Antelope Jack Rabbit, Liebre antilope, Antelope Jackrabbit, Allen's Jackrabbit, White-sided Jackrabbit, liebre torda, liebre blanca, libre appaloosa
  Lepus americanus Erxleben, 1777 -- valid -- lièvre d'Amérique, Snowshoe Hare, Varying Hare
  Lepus californicus Gray, 1837 -- valid -- Black-tailed Jack Rabbit, Liebre cola negra, Black-tailed Jackrabbit, California Jackrabbit, Gray-sided Jackrabbit, Narrow-gauge Mule, Jackass-hare, Texas Jack, Texan Hare, Great Plains Jackrabbit
  Lepus callotis Wagler, 1830 -- valid -- White-sided Jack Rabbit, Liebre torda, White-sided Jackrabbit, Beautiful-eared jack rabbit, Gaillard jack rabbit, snow sides, Antelope Rabbit, Gaillard's Jackrabbit, Snowsides, Liebra pinta
  Lepus capensis Linnaeus, 1758 -- valid -- Cape Hare, Arabian Hare, Brown Hare, Desert Hare
  Lepus gaillardi Mearns, 1896 -- invalid
  Lepus timidus Linnaeus, 1758 -- valid -- Mountain Hare, Varying Hare
  Lepus townsendii Bachman, 1839 -- valid -- White-tailed Jack Rabbit, White-tailed Jackrabbit
  Leucosticte Swainson, 1832 -- valid -- Rosy Finches
  Leucosticte arctoa (Pallas, 1811) -- valid -- Rosy Finch, Asian Rosy Finch
  Leurognathus Moore, 1899 -- invalid -- Shovel-nosed Salamanders
  Leurognathus marmoratus Moore, 1899 -- invalid -- Shovel-nosed Salamander
  Limicola Koch, 1816 -- invalid -- Broad-billed Sandpipers
  Limicola falcinellus (Pontoppidan, 1763) -- invalid -- Broad-billed Sandpiper, Bécasseau falcinelle
  Limnaoedus Mittleman and List, 1953 -- invalid -- Little Grass Frogs
  Limnaoedus ocularis (Bosc and Daudin in Sonnini de Manoncourt and Latreille, 1801) -- invalid -- Little Grass Frog
  Limnodromus Wied-Neuwied, 1833 -- valid -- Dowitchers
  Limnodromus griseus (J. F. Gmelin, 1789) -- valid -- Costurero pico corto, Short-billed Dowitcher, Bécassin roux, Agujeta gris, maçarico-de-costas-brancas, maçarico-de-bico-curto
  Limnodromus scolopaceus (Say, 1822) -- valid -- Costurero pico largo, Long-billed Dowitcher, Bécassin à long bec, Agujeta escolopácea, maçarico-de-bico-comprido
  Limnothlypis Stone, 1914 -- valid -- Swainson's Warblers
  Limnothlypis swainsonii (Audubon, 1834) -- valid -- Swainson's Warbler, Chipe corona café, Paruline de Swainson
  Limosa Brisson, 1760 -- valid -- Godwits
  Limosa fedoa (Linnaeus, 1758) -- valid -- Picopando canelo, Marbled Godwit, Barge marbrée, Aguja canela, maçarico-marmóreo
  Limosa haemastica (Linnaeus, 1758) -- valid -- Picopando ornamentado, Hudsonian Godwit, Barge hudsonienne, Aguja café, maçarico-de-bico-virado
  Limosa lapponica (Linnaeus, 1758) -- valid -- Picopando cola barrada, Bar-tailed Godwit, Barge rousse, Aguja colipinta, fuselo
  Limosa limosa (Linnaeus, 1758) -- valid -- Black-tailed Godwit, Barge à queue noire, Aguja colinegra, milherango
  Liomys Merriam, 1902 -- valid -- Spiny Pocket Mice
  Liomys irroratus (Gray, 1868) -- valid -- Ratón-espinoso mexicano, Mexican Spiny Pocket Mouse
  Lipinia Gray, 1845 -- valid -- Lipinias
  Lipinia leptosoma (Brown and Fehlmann, 1958) -- valid -- Pandanus Skink, Palau Pandanus Skink, Slender Lipinia
  Lipinia noctua (Lesson, 1830) -- invalid -- Moth Skink
  Lissodelphis Gloger, 1841 -- valid -- right-whale dolphins, right whale dolphins
  Lissodelphis borealis (Peale, 1848) -- valid -- Northern Right Whale Dolphin, Delfín-ballena norteño
  Lissodelphis peronii (Lacépède, 1804) -- valid -- Southern Right Whale Dolphin
  Locustella Kaup, 1829 -- valid -- Grasshopper-Warbler
  Locustella lanceolata (Temminck, 1840) -- valid -- Lanceolated Warbler
  Locustella ochotensis (Middendorff, 1853) -- valid -- Middendorff's Grasshopper-Warbler, Middendorff's Grasshopper Warbler
  Lonchura Sykes, 1832 -- valid -- Mannikins
  Lonchura cucullata (Swainson, 1837) -- valid -- Bronze Mannikin
  Lonchura hunsteini (Finsch, 1886) -- valid -- Black-breasted Mannikin, Mottled Munia
  Lonchura malabarica (Linnaeus, 1758) -- invalid -- Indian Silverbill, Warbling Silverbill
  Lonchura malacca (Linnaeus, 1766) -- valid -- Chestnut Mannikin, Black-headed Munia, Tricolored Munia
  Lonchura punctulata (Linnaeus, 1758) -- valid -- Nutmeg Mannikin, Scaly-breasted Munia
  Lophodytes Reichenbach, 1853 -- valid -- Hooded Mergansers
  Lophodytes cucullatus (Linnaeus, 1758) -- valid -- Mergo cresta blanca, Hooded Merganser, Harle couronné, Serreta capuchona, merganso-capuchinho
  Lophura J. Fleming, 1822 -- valid -- Kalij Pheasants
  Lophura leucomelana (Latham, 1790) -- invalid -- Kalij Pheasant
  Loxia Linnaeus, 1758 -- valid -- Crossbills
  Loxia curvirostra Linnaeus, 1758 -- valid -- Red Crossbill, bec-croisé des sapins, Picotuerto rojo
  Loxia leucoptera J. F. Gmelin, 1789 -- valid -- White-winged Crossbill, bec-croisé bifascié, Two-barred Crossbill
  Loxigilla R. Lesson, 1831 -- valid -- Antillean Bullfinches
  Loxigilla noctis (Linnaeus, 1766) -- valid -- Pèrenoir rougegorge, Semillero gorjirrojo, Lesser Antillean Bullfinch
  Loxigilla portoricensis (Daudin, 1800) -- invalid -- Puerto Rican Bullfinch
  Loxioides Oustalet, 1877 -- valid -- Palilas
  Loxioides bailleui Oustalet, 1877 -- valid -- Honeycreeper, Palila
  Loxops Cabanis, 1847 -- valid -- 'Akepas
  Loxops coccineus (J. F. Gmelin, 1789) -- valid -- 'Akepa, Akepa, Honeycreeper
  Luscinia T. Forster, 1817 -- valid -- Rubythroats
  Luscinia calliope (Pallas, 1776) -- valid -- Siberian Rubythroat
  Luscinia svecica (Linnaeus, 1758) -- valid -- Bluethroats, Bluethroat
  Lutra Brünnich, 1771 -- invalid -- river otters
  Lutra canadensis (Schreber, 1777) -- invalid -- River Otter
  Lymnocryptes Kaup, 1829 -- invalid -- Jack Snipes
  Lymnocryptes minimus (Brünnich, 1764) -- valid -- Jack Snipe, Bécassine sourde, Agachadiza chica, narceja-galega
  Lynx Kerr, 1792 -- valid -- bobcats, lynxes
  Lynx canadensis Kerr, 1792 -- valid -- Canadian Lynx, Canada lynx, lynx, lynx du Canada
  Lynx rufus (Schreber, 1777) -- valid -- Bobcat, Lince americano, lynx roux
  Mabuya Fitzinger, 1826 -- valid -- Mabuyas
  Mabuya multicarinata (Gray, 1845) -- invalid -- Many-keeled Mabuya
  Mabuya multifasciata (Kuhl, 1820) -- invalid -- Brown Mabuya
  Mabuya sloanii (Daudin, 1803) -- invalid -- Slippery-backed Mabuya, Slippery Back Skink
  Macaca Lacépède, 1799 -- valid -- macaques
  Macaca fascicularis (Raffles, 1821) -- valid -- Long-tailed Macaque, Crab-eating Macaque
  Macaca mulatta (Zimmermann, 1780) -- valid -- Rhesus Monkey, Rhesus Macaque
  Macroclemys Gray, 1856 -- invalid -- alligator snapping turtles
  Macroclemys temminckii (Troost in Harlan, 1835) -- invalid -- alligator snapping turtle
  Macropodidae Gray, 1821 -- valid -- kangaroos, wallabies
  Macrotus Gray, 1843 -- valid -- big-eared bats
  Macrotus californicus Baird, 1858 -- valid -- California Leaf-nosed Bat, Murciélago-orejón californiano, Californian Leaf-nosed Bat
  Malaclemys Gray, 1844 -- valid -- Diamondback Terrapins
  Malaclemys terrapin (Schoepff, 1793) -- valid -- Diamond-backed Terrapin, Diamondback Terrapin
  Margarops P. L. Sclater, 1859 -- valid -- Antillean Thrashers
  Margarops fuscatus (Vieillot, 1808) -- valid -- Pearly-eyed Thrasher
  Marmota Blumenbach, 1779 -- valid -- Marmots
  Marmota broweri Hall and Gilmore, 1934 -- valid -- Alaska Marmot
  Marmota caligata (Eschscholtz, 1829) -- valid -- Hoary Marmot
  Marmota flaviventris (Audubon and Bachman, 1841) -- valid -- Yellow-bellied Marmot
  Marmota monax (Linnaeus, 1758) -- valid -- marmotte commune, Woodchuck, Groundhog
  Marmota olympus (Merriam, 1898) -- valid -- Olympic Marmot
  Marmota vancouverensis Swarth, 1911 -- valid -- Vancouver Marmot, Vancouver Island Marmot
  Martes Pinel, 1792 -- valid -- martens
  Martes pennanti (Erxleben, 1777) -- invalid -- Fisher, pékan
  Masticophis Baird and Girard, 1853 -- invalid -- Coachwhips, Whipsnakes, Racers, Striped Racers
  Masticophis bilineatus Jan, 1863 -- invalid -- Sonoran Whipsnake, Culebra-chirriadora sonorense
  Masticophis flagellum (Shaw, 1802) -- invalid -- Coachwhip, Culebra-chirriadora común
  Masticophis lateralis (Hallowell, 1853) -- invalid -- Striped Racer, Culebra-chirriadora rayada
  Masticophis taeniatus (Hallowell, 1852) -- invalid -- Striped Whipsnake, Culebra-chirriadora adornada
  Megapodiidae -- valid -- Megapodes
  Megapodius Gaimard, 1823 -- valid -- Megapodes
  Megapodius laperouse Gaimard, 1823 -- valid -- Mégapode de La Pérouse, Talégalo de las Marianas, frango-do-mato-micronésio, La Perouse's Megapode, Micronesian Megapode
  Megaptera Gray, 1846 -- valid -- humpback whales
  Megaptera novaeangliae (Borowski, 1781) -- valid -- Humpback Whale, rorqual à bosse, Ballena jorobada
  Melamprosops Casey & J. D. Jacobi, 1974 -- valid -- Po'o'ulis
  Melamprosops phaeosoma Casey & J. D. Jacobi, 1974 -- valid -- Po'o'uli, Poo-uli
  Melanerpes Swainson, 1832 -- valid -- Melanerpine Woodpeckers
  Melanerpes aurifrons (Wagler, 1829) -- valid -- Golden-fronted Woodpecker, Carpintero cheje
  Melanerpes carolinus (Linnaeus, 1758) -- valid -- Red-bellied Woodpecker, pic à ventre roux
  Melanerpes erythrocephalus (Linnaeus, 1758) -- valid -- Red-headed Woodpecker, pic à tête rouge
  Melanerpes formicivorus (Swainson, 1827) -- valid -- Acorn Woodpecker, Carpintero bellotero
  Melanerpes lewis (G. R. Gray, 1849) -- valid -- Lewis' Woodpecker, Carpintero de Lewis, Lewis's Woodpecker
  Melanerpes portoricensis (Daudin, 1803) -- valid -- Puerto Rican Woodpecker
  Melanerpes uropygialis (S. F. Baird, 1854) -- valid -- Gila Woodpecker, Carpintero del desierto
  Melanitta F. Boie, 1822 -- valid -- Scoters
  Melanitta fusca (Linnaeus, 1758) -- valid -- Velvet Scoter, Negreta ala blanca, Macreuse brune, Negrón especulado, negrola-d'asa-branca, White-winged Scoter
  Melanitta nigra (Linnaeus, 1758) -- valid -- Negreta negra, Black Scoter, Common Scoter, Macreuse noire, Negrón común, negrola
  Melanitta perspicillata (Linnaeus, 1758) -- valid -- Negreta nuca blanca, Surf Scoter, Macreuse à front blanc, Negrón careto, negrola-de-lunetas
  Meleagridinae -- invalid -- Turkeys
  Meleagris Linnaeus, 1758 -- valid -- Turkeys
  Meleagris gallopavo Linnaeus, 1758 -- valid -- Guajolote gallipavo, peru-bravo, Guajolote norteño, Wild Turkey, dindon sauvage
  Meliphagidae -- valid -- Honeyeaters
  Melopsittacus Gould, 1840 -- valid -- Budgerigars
  Melopsittacus undulatus (Shaw, 1805) -- valid -- Budgerigar
  Melospiza S. F. Baird, 1858 -- valid -- Song Sparrows
  Melospiza georgiana (Latham, 1790) -- valid -- Chingolo pantanero, tico-tico-dos-pântanos, Swamp Sparrow, bruant des marais, Gorrión pantanero
  Melospiza melodia (A. Wilson, 1810) -- valid -- Chingolo cantor, tico-tico-musical, Gorrión cantor, Song Sparrow, bruant chanteur
  Mephitis É. Geoffroy Saint-Hilaire and F. G. Cuvier, 1795 -- valid -- hooded skunks, striped skunks
  Mephitis macroura Lichtenstein, 1832 -- valid -- Hooded Skunk, Zorrillo-listado del sur
  Mephitis mephitis (Schreber, 1776) -- valid -- Striped Skunk, mouffette rayée, Zorrillo-listado del norte
  Mergellus Selby, 1840 -- valid -- Smews
  Mergellus albellus (Linnaeus, 1758) -- valid -- Smew, Harle piette, Serreta chica, merganso-pequeno
  Mergus Linnaeus, 1758 -- valid -- Greater Mergansers
  Mergus merganser Linnaeus, 1758 -- valid -- Mergo mayor, Common Merganser, Grand Harle, Serreta grande, merganso-grande, Goosander
  Mergus serrator Linnaeus, 1758 -- valid -- Mergo copetón, Red-breasted Merganser, Harle huppé, Serreta mediana, merganso-de-poupa
  Mesoplodon Gervais, 1850 -- valid -- beaked whales
  Mesoplodon bidens (Sowerby, 1804) -- valid -- North Atlantic beaked whale, Sowerby's Beaked Whale
  Mesoplodon carlhubbsi Moore, 1963 -- valid -- arch-beaked whale, archbeaked whale, Hubbs' Beaked Whale, Hubbs's Beaked Whale, Ballena-picuda de Hubb
  Mesoplodon densirostris (Blainville, 1817) -- valid -- dense-beaked whale, Blainville's Beaked Whale, densebeak whale, Ballena-picuda de Blainsville
  Mesoplodon europaeus (Gervais, 1855) -- valid -- Gervais' Beaked Whale, Gervais's Beaked Whale, Antillean beaked whale
  Mesoplodon ginkgodens Nishiwaki and Kamiya, 1958 -- valid -- ginkgo-toothed whale, Ginkgo-toothed Beaked Whale, Ballena-picuda japonesa
  Mesoplodon grayi von Haast, 1876 -- valid -- Gray's Beaked Whale, Haast's beaked whale, scamper-down whale
  Mesoplodon hectori (Gray, 1871) -- valid -- Hector's Beaked Whale
  Mesoplodon layardii (Gray, 1865) -- valid -- Strap-toothed Whale, Layard's beaked whale, strap-toothed beaked whale
  Mesoplodon mirus True, 1913 -- valid -- True's Beaked Whale
  Mesoplodon stejnegeri True, 1885 -- valid -- Stejneger's Beaked Whale, Bering Sea beaked whale
  Metabolus Bonaparte, 1854 -- valid -- Truk Monarchs
  Metabolus rugensis (Hombron & Jacquinot, 1841) -- valid -- Truk Monarch, Chuuk Monarch
  Micrathene Coues, 1866 -- valid -- Elf Owls
  Micrathene whitneyi (J. G. Cooper, 1861) -- valid -- Elf Owl, Tecolote enano
  Microdipodops Merriam, 1891 -- valid -- Kangaroo Mice
  Microdipodops megacephalus Merriam, 1891 -- valid -- Dark Kangaroo Mouse
  Microdipodops pallidus Merriam, 1901 -- valid -- Pale Kangaroo Mouse
  Micropalama himantopus (Bonaparte, 1826) -- invalid
  Microtus Schrank, 1798 -- valid -- Meadow Mice, Meadow Voles
  Microtus abbreviatus Miller, 1899 -- valid -- St. Matthews Island vole, Insular Vole
  Microtus breweri (Baird, 1857) -- valid -- Beach Vole
  Microtus californicus (Peale, 1848) -- valid -- Amargosa Vole, Meteoro de California, California Vole
  Microtus californicus californicus (Peale, 1848) -- invalid -- California vole
  Microtus canicaudus Miller, 1897 -- valid -- Gray-tailed Vole
  Microtus chrotorrhinus (Miller, 1894) -- valid -- campagnol des rochers, Rock Vole
  Microtus coronarius Swarth, 1911 -- invalid -- Coronation Island vole
  Microtus longicaudus (Merriam, 1888) -- valid -- Coronation Island vole, Long-tailed Vole
  Microtus mexicanus (Saussure, 1861) -- valid -- Meteoro mexicano, Mexican Vole
  Microtus mexicanus mexicanus (Saussure, 1861) -- invalid -- Mexican vole
  Microtus miurus Osgood, 1901 -- valid -- Singing Vole
  Microtus montanus (Peale, 1848) -- valid -- Montane Vole
  Microtus nesophilus Bailey, 1898 -- invalid -- Gull Island vole
  Microtus ochrogaster (Wagner, 1842) -- valid -- Prairie Vole
  Microtus oeconomus (Pallas, 1776) -- valid -- Root Vole, Tundra Vole
  Microtus oregoni (Bachman, 1839) -- valid -- Creeping Vole
  Microtus pinetorum (Le Conte, 1830) -- valid -- campagnol sylvestre, Woodland Vole, Pine Vole
  Microtus richardsoni (DeKay, 1842) -- valid -- Water Vole, North American Water Vole
  Microtus townsendii (Bachman, 1839) -- valid -- Townsend's Vole
  Microtus xanthognathus (Leach, 1815) -- valid -- Taiga Vole, Yellow-cheeked Vole
  Micruroides K. P. Schmidt, 1928 -- valid -- Western Coral Snakes, Sonoran Coralsnakes
  Micruroides euryxanthus (Kennicott, 1860) -- valid -- Sonoran Coralsnake, Serpiente-coralillo sonorense, Western Coral Snake
  Micrurus Wagler, 1824 -- valid -- American Coral Snakes, American Coralsnakes
  Micrurus fulvius (Linnaeus, 1766) -- valid -- Northern Coral Snake, Harlequin Coralsnake, Serpiente-coralillo arlequín, Eastern Coral Snake
  Milvus Lacepede, 1799 -- valid -- Black Kites
  Milvus migrans (Boddaert, 1783) -- valid -- Black Kite, Milan noir
  Mimidae Bonaparte, 1853 -- valid -- Mockingbirds, Thrashers
  Mimus F. Boie, 1826 -- valid -- Mockingbirds
  Mimus gundlachii Cabanis, 1855 -- valid -- Bahama Mockingbird
  Mimus polyglottos (Linnaeus, 1758) -- valid -- Centzontle norteño, Northern Mockingbird, moqueur polyglotte
  Mirounga Gray, 1827 -- valid -- elephant seals
  Mirounga angustirostris (Gill, 1866) -- valid -- Northern Elephant Seal, northern sea elephant, Elefante-marino norteño
  Mniotilta Vieillot, 1816 -- valid -- Black-and-white Warblers
  Mniotilta varia (Linnaeus, 1766) -- valid -- Chipe trepador, Black-and-white Warbler, Paruline noir et blanc
  Moho Lesson, 1830 -- valid -- 'O'os, 'O'os
  Moho apicalis Gould, 1861 -- valid -- Oahu 'O'o, Oahu Oo, Oahu 'O'o, Oahu Oo
  Moho bishopi (Rothschild, 1893) -- valid -- Bishop's 'O'o, Bishop's Oo, Bishop's 'O'o, Bishop's Oo
  Moho braccatus Cassin, 1855 -- valid -- Honeyeater, Kauai 'O'o, O'o A'a, Kauai Oo, Honeyeater, Kauai 'O'o, O'o A'a, Kauai Oo
  Moho nobilis (Merrem, 1786) -- valid -- Hawaii 'O'o, Hawaii Oo, Hawaii 'O'o, Hawaii Oo
  Molossidae Gervais, 1856 -- valid -- free-tailed bats
  Molossus E. Geoffroy, 1805 -- valid -- velvety free-tailed bats, mastiff bats
  Molossus molossus (Pallas, 1766) -- valid -- Pallas' Free-tailed Bat, Murciélago-mastín de Pallas, Pallas's Mastiff Bat
  Molothrus Swainson, 1832 -- valid -- Cowbirds
  Molothrus aeneus (Wagler, 1829) -- valid -- Bronzed Cowbird, Tordo ojo rojo
  Molothrus ater (Boddaert, 1783) -- valid -- Tordo cabeza café, Brown-headed Cowbird, vacher à tête brune
  Molothrus bonariensis (Gmelin, 1789) -- valid -- Shiny Cowbird
  Monachus Fleming, 1822 -- valid -- monk seals
  Monachus schauinslandi Matschie, 1905 -- invalid -- Hawaiian Monk Seal
  Monachus tropicalis (Gray, 1850) -- invalid -- Caribbean Monk Seal, West Indian monk seal, Foca-monje del Caribe
  Monarcha Vigors & Horsfield, 1827 -- valid -- Monarchs
  Monarcha godeffroyi Hartlaub, 1868 -- valid -- Yap Monarch
  Monarcha takatsukasae (Yamashina, 1931) -- valid -- Tinian Monarch
  Monodon Linnaeus, 1758 -- valid -- narwhals
  Monodon monoceros Linnaeus, 1758 -- valid -- Narwhal, narval
  Monodontidae Gray, 1821 -- valid -- white whales
  Monophyllus Leach, 1821 -- valid -- Antillean long-tongued bats
  Monophyllus plethodon Miller, 1900 -- valid -- Insular Single Leaf Bat, Insular Long-tongued Bat, Insular Single-leaf Bat
  Monophyllus redmani Leach, 1821 -- valid -- Leach's Single Leaf Bat, Puerto Rican Long-tongued Bat, Leach's Single-leaf Bat
  Monticola F. Boie, 1822 -- valid -- Rock-Thrushes
  Monticola solitarius (Linnaeus, 1758) -- valid -- Blue Rock-Thrush, Blue Rock Thrush
  Mormoopidae Saussure, 1860 -- valid -- ghost-faced bats, moustached bats, naked-backed bats
  Mormoops Leach, 1821 -- valid -- ghost-faced bats
  Mormoops blainvillii Leach, 1821 -- invalid -- Antillean Ghost-faced Bat
  Mormoops megalophylla (Peters, 1864) -- valid -- Ghost-faced Bat, Murciélago-barba arrugada norteño, Peters's Ghost-faced Bat
  Motacilla Linnaeus, 1758 -- valid -- Wagtails
  Motacilla alba Linnaeus, 1758 -- valid -- Lavandera blanca, White Wagtail
  Motacilla cinerea Tunstall, 1771 -- valid -- Gray Wagtail, Grey Wagtail
  Motacilla flava Linnaeus, 1758 -- valid -- Yellow Wagtail, Western Yellow Wagtail
  Motacilla lugens Gloger, 1829 -- invalid -- Black-backed Wagtail
  Motacillidae Horsfield, 1821 -- valid -- Pipits, Wagtails
  Muridae Illiger, 1811 -- valid -- campagnols, rats, souris, mice, rats, voles
  Mus Linnaeus, 1758 -- valid -- House Mice, Old World Mice
  Muscicapa Brisson, 1760 -- valid -- Old World Flycatchers
  Muscicapa griseisticta (Swinhoe, 1861) -- valid -- Gray-spotted Flycatcher, Grey-streaked Flycatcher, Gray-streaked Flycatcher
  Muscicapa sibirica Gmelin, 1789 -- valid -- Siberian Flycatcher, Dark-sided Flycatcher
  Muscicapidae Fleming, 1822 -- valid -- Old World Flycatchers, Chats
  Mustela Linnaeus, 1758 -- valid -- polecats, ermines, ferrets, minks, weasels
  Mustela erminea Linnaeus, 1758 -- valid -- Ermine, hermine
  Mustela frenata Lichtenstein, 1831 -- valid -- Long-tailed Weasel, belette à longue queue, Comadreja cola larga
  Mustela nigripes (Audubon and Bachman, 1851) -- valid -- Black-footed Ferret
  Mustela nivalis Linnaeus, 1766 -- valid -- Least Weasel, belette pygmée
  Mustela vison Schreber, 1777 -- valid -- American Mink, vison d'Amérique
  Mustelidae Fischer, 1817 -- valid -- mustelids
  Myadestes Swainson, 1838 -- valid -- Hawaiian Thrushes, Solitaires
  Myadestes lanaiensis (S. B. Wilson, 1891) -- valid -- Oloma'o, Olomao
  Myadestes myadestinus (Stejneger, 1887) -- valid -- Kamao, Large Kauai Thrush
  Myadestes obscurus (Gmelin, 1789) -- valid -- 'Oma'o, Omao
  Myadestes palmeri (Rothschild, 1893) -- valid -- Puaiohi, Small Kauai Thrush
  Myadestes townsendi (Audubon, 1838) -- valid -- Clarín norteño, Townsend's Solitaire, solitaire de Townsend
  Mycteria Linnaeus, 1758 -- valid -- Wood Storks
  Mycteria americana Linnaeus, 1758 -- valid -- Wood Stork, Cigüeña americana, Tantale d'Amérique
  Myiagra Vigors & Horsfield, 1827 -- valid -- Broadbills, Flycatchers
  Myiagra erythrops Hartlaub & Finsch, 1868 -- valid -- Palau Broadbill, Palau Flycatcher
  Myiagra freycineti Oustalet, 1881 -- valid -- Guam Broadbill, Guam Flycatcher
  Myiagra oceanica Pucheran, 1853 -- valid -- Truk Broadbill, Oceanic Flycatcher
  Myiagra pluto Finsch, 1876 -- valid -- Pohnpei Flycatcher, Pohnpei Broadbill
  Myiarchus Cabanis, 1844 -- valid -- Crested Flycatchers
  Myiarchus antillarum (H. Bryant, 1866) -- valid -- Puerto Rican Flycatcher
  Myiarchus cinerascens (Lawrence, 1851) -- valid -- Papamoscas cenizo, Ash-throated Flycatcher, tyran à gorge cendrée
  Myiarchus crinitus (Linnaeus, 1758) -- valid -- Papamoscas viajero, Great Crested Flycatcher, tyran huppé
  Myiarchus nuttingi Ridgway, 1882 -- valid -- Nutting's Flycatcher, Papamoscas de Nutting
  Myiarchus sagrae (Gundlach, 1852) -- valid -- La Sagra's Flycatcher
  Myiarchus tuberculifer (Orbigny & Lafresnaye, 1837) -- valid -- Dusky-capped Flycatcher, Papamoscas triste
  Myiarchus tyrannulus (Statius Muller, 1776) -- valid -- Brown-crested Flycatcher, Papamoscas tirano
  Myioborus S. F. Baird, 1865 -- valid -- Painted Redstarts
  Myioborus miniatus (Swainson, 1827) -- valid -- Slate-throated Redstart, Chipe de montaña, Paruline ardoisée, Slate-throated Whitestart
  Myioborus pictus (Swainson, 1829) -- valid -- Painted Redstart, Chipe ala blanca, Painted Whitestart, Paruline à ailes blanches
  Myiodynastes Bonaparte, 1857 -- valid -- Sulphur-bellied Flycatchers
  Myiodynastes luteiventris P. L. Sclater, 1859 -- valid -- Sulphur-bellied Flycatcher, Papamoscas atigrado
  Myiopsitta Bonaparte, 1854 -- valid -- Monk Parakeets
  Myiopsitta monachus (Boddaert, 1783) -- valid -- Monk Parakeet
  Myocastor Kerr, 1792 -- valid -- nutrias
  Myocastor coypus (Molina, 1782) -- valid -- nutria, nutria, coypu, Coypu
  Myocastoridae Ameghino, 1902 -- valid -- nutrias
  Myotis Kaup, 1829 -- valid -- mouse-eared bats
  Myotis auriculus Baker and Stains, 1955 -- valid -- Miotis orejudo, Southwestern Myotis
  Myotis austroriparius (Rhoads, 1897) -- valid -- Southeastern Myotis
  Myotis californicus (Audubon and Bachman, 1842) -- valid -- Miotis californiano, California Myotis, Californian Myotis
  Myotis ciliolabrum (Merriam, 1886) -- valid -- western small-footed bat, Miotis cara negra, Western Small-footed Myotis, Small-footed Myotis
  Myotis evotis (H. Allen, 1864) -- valid -- Miotis oreja larga, Long-eared Myotis, Western Long-eared Bat
  Myotis fortidens Miller and G. M. Allen, 1928 -- valid -- Miotis canelo, Cinnamon Myotis
  Myotis grisescens A. H. Howell, 1909 -- valid -- Gray Myotis, Gray Bat
  Myotis insularum (Dobson, 1878) -- valid -- Insular Myotis
  Myotis keenii (Merriam, 1895) -- valid -- Keen's Myotis
  Myotis leibii (Audubon and Bachman, 1842) -- valid -- Small-footed Myotis, chauve-souris pygmée, Eastern Small-footed Myotis, Eastern Small-footed Bat
  Myotis lucifugus (Le Conte, 1831) -- valid -- Little Brown Bat, Miotis norteamericano, petite chauve-souris brune, Little Brown Myotis
  Myotis septentrionalis (Trouessart, 1897) -- valid -- chauve-souris nordique, Northern Long-eared Bat, Northern Myotis, Northern Bat
  Myotis sodalis Miller and G. M. Allen, 1928 -- valid -- Indiana Myotis, Indiana bat, Cluster Bat, Social Bat
  Myotis thysanodes Miller, 1897 -- valid -- Miotis bordado, Fringed Myotis
  Myotis velifer (J. A. Allen, 1890) -- valid -- Miotis mexicano, Cave Myotis
  Myotis volans (H. Allen, 1866) -- valid -- Miotis pata larga, Long-legged Myotis
  Myotis yumanensis (H. Allen, 1864) -- valid -- Miotis de Yuma, Yuma Myotis
  Myzomela Vigors & Horsfield, 1827 -- valid -- Cardinal Honeyeaters
  Myzomela cardinalis (J. F. Gmelin, 1788) -- valid -- Cardinal Honeyeater, Cardinal Myzomela, Myzomèle cardinal, Mielero cardenal
  Nactus Kluge, 1983 -- valid -- Hook-toed Geckos
  Nactus pelagicus (Girard, 1858) -- valid -- Pelagic Gecko
  Napaeozapus Preble, 1899 -- valid -- woodland jumping mice
  Nasua Storr, 1780 -- valid -- coatis
  Nasua nasua (Linnaeus, 1766) -- valid -- South American Coati
  Necturus Rafinesque, 1819 -- valid -- Mudpuppies, Waterdogs
  Neocrex P. L. Sclater & Salvin, 1869 -- valid -- Paint-billed Crakes
  Neocrex erythrops (P. L. Sclater, 1867) -- valid -- Paint-billed Crake
  Neofiber True, 1884 -- valid -- Round-tailed Muskrats
  Neofiber alleni True, 1884 -- valid -- Round-tailed Muskrat
  Neoseps Stejneger, 1910 -- invalid -- Florida Sand Skinks
  Neoseps reynoldsi Stejneger, 1910 -- invalid -- Florida Sand Skink, Sand Skink
  Neotoma Say and Ord, 1825 -- valid -- Packrats
  Neotoma albigula Hartley, 1894 -- valid -- Rata-cambalachera garganta blanca, White-throated Woodrat
  Neotoma cinerea (Ord, 1815) -- valid -- Bushy-tailed Woodrat
  Neotoma floridana (Ord, 1818) -- valid -- Eastern Woodrat
  Neotoma floridana floridana (Ord, 1818) -- invalid -- eastern woodrat
  Neotoma fuscipes Baird, 1857 -- valid -- Rata-cambalachera patas oscuras, Dusky-footed Woodrat
  Neotoma lepida Thomas, 1893 -- valid -- Rata-cambalachera desértica, Desert Woodrat
  Neotoma mexicana Baird, 1855 -- valid -- Rata-cambalachera mexicana, Mexican Woodrat
  Neotoma micropus Baird, 1855 -- valid -- Rata-cambalachera de pradera, Southern Plains Woodrat
  Neotoma stephensi Goldman, 1905 -- valid -- Stephens's woodrat, Stephen's Woodrat
  Nerodia Baird and Girard, 1853 -- valid -- Water Snakes, North American Water Snakes
  Nerodia clarkii (Baird and Girard, 1853) -- valid -- Salt Marsh Water Snake, Saltmarsh Snake, Gulf salt marsh snake, Salt Marsh Snake
  Nerodia cyclopion (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Green Water Snake, Mississippi Green Water Snake, Mississippi Green Watersnake
  Nerodia erythrogaster (Forster in Bossu, 1771) -- valid -- Plain-bellied Water Snake, Culebra-de agua vientre claro, Plainbelly Water Snake, Plain-bellied Watersnake, Red-bellied Water Snake, Redbelly Water Snake
  Nerodia fasciata (Linnaeus, 1766) -- valid -- Southern Water Snake, Southern Watersnake
  Nerodia floridana (Goff, 1936) -- valid -- Florida Green Water Snake, Florida Green Watersnake
  Nerodia harteri (Trapido, 1941) -- valid -- Harter's Water Snake, Brazos River Water Snake, Brazos River Watersnake, Brazos Water Snake, Harters Water Snake
  Nerodia harteri harteri (Trapido, 1941) -- invalid -- Brazos River Watersnake, Brazos water snake
  Nerodia paucimaculata (Tinkle and Conant, 1961) -- valid -- Concho Water Snake, Concho Watersnake
  Nerodia rhombifera (Hallowell, 1852) -- invalid
  Nerodia sipedon (Linnaeus, 1758) -- valid -- Northern Water Snake, couleuvre d'eau, Common Watersnake
  Nerodia taxispilota (Holbrook, 1838) -- valid -- Brown Water Snake, Brown Watersnake
  Nesochen Salvadori, 1895 -- invalid -- Hawaiian Geese
  Nesochen sandvicensis (Vigors, 1834) -- invalid -- Hawaiian Goose, Nene
  Nesospingus P. L. Sclater, 1885 -- valid -- Puerto Rican Tanagers
  Nesospingus speculiferus (Lawrence, 1875) -- valid -- Pleureur de Porto Rico, Tangara puertorriqueña, Puerto Rican Tanager
  Neurotrichus Günther, 1880 -- valid -- American shrew-moles
  Neurotrichus gibbsii (Baird, 1858) -- valid -- American Shrew Mole, Gibbs's shrew mole, least shrew mole, Shrew-mole
  Noctilio Linnaeus, 1766 -- valid -- bulldog bats
  Noctilio leporinus (Linnaeus, 1758) -- valid -- Murciélago-pescador mayor, Greater Bulldog Bat
  Noctilionidae Gray, 1821 -- valid -- bulldog bats
  Notiosorex Coues, 1877 -- valid -- desert shrews
  Notiosorex crawfordi (Coues, 1877) -- valid -- gray shrew, Desert Shrew, Musaraña-desértica norteña, Crawford's Gray Shrew
  Notophthalmus Rafinesque, 1820 -- valid -- Eastern Newts, North American Newts
  Notopteris Gray, 1859 -- valid -- long-tailed fruit bats
  Notopteris macdonaldi Gray, 1859 -- invalid -- long-tailed fruit bat, Fijian Long-tailed Fruit Bat
  Nucifraga Brisson, 1760 -- valid -- Nutcrackers
  Nucifraga columbiana (A. Wilson, 1811) -- valid -- Clark's Nutcracker, Cascanueces americano
  Numenius Brisson, 1760 -- valid -- Curlews
  Numenius americanus Bechstein, 1812 -- valid -- Zarapito pico largo, Long-billed Curlew, Courlis à long bec, Zarapito americano, maçarico-bicudo
  Numenius arquata (Linnaeus, 1758) -- valid -- Eurasian Curlew, Courlis cendré, Zarapito real, maçarico-real
  Numenius borealis (J. R. Forster, 1772) -- valid -- Zarapito boreal, Eskimo Curlew, Courlis esquimau, Zarapito esquimal, maçarico-esquimó
  Numenius madagascariensis (Linnaeus, 1766) -- valid -- Far Eastern Curlew, Eastern Curlew, Courlis de Sibérie, Zarapito siberiano, maçarico-siberiano
  Numenius minutus Gould, 1841 -- valid -- Little Curlew, Courlis nain, Zarapito chico, maçarico-pequeno
  Numenius phaeopus (Linnaeus, 1758) -- valid -- Zarapito trinador, Whimbrel, Courlis corlieu, Eurasian Whimbrel, maçarico-galego
  Numenius tahitiensis (J. F. Gmelin, 1789) -- valid -- Bristle-thighed Curlew, Courlis d'Alaska, Zarapito del Pacífico, maçarico-de-coxas-arrepiadas
  Numenius tenuirostris Vieillot, 1817 -- valid -- Slender-billed Curlew, Courlis à bec grêle, Zarapito fino, maçarico-de-bico-fino
  Numida Linnaeus, 1764 -- valid -- Guineafowl
  Numida meleagris (Linnaeus, 1758) -- valid -- Pintade de Numidie, Pintada común, pintada, Helmeted Guineafowl
  Numidinae -- invalid -- Guineafowl
  Nyctea Stephens, 1826 -- invalid -- Snowy Owls
  Nyctea scandiaca (Linnaeus, 1758) -- invalid -- snowy owl, harfang des neiges
  Nyctibiidae -- valid -- Potoos
  Nyctibius Vieillot, 1816 -- valid -- Potoos
  Nyctibius griseus (J. F. Gmelin, 1789) -- valid -- Common Potoo, Bienparado norteño
  Nycticeius Rafinesque, 1819 -- valid -- evening bats
  Nycticeius humeralis (Rafinesque, 1818) -- valid -- Murciélago-crepuscular americano, Evening Bat, North American Evening Bat
  Nycticorax T. Forster, 1817 -- valid -- Night-Herons
  Nycticorax caledonicus (Gmelin, 1789) -- valid -- Rufous Night Heron, Nankeen Night Heron
  Nycticorax nycticorax (Linnaeus, 1758) -- valid -- Pedrete corona negra, Black-crowned Night Heron, Black-crowned Night-Heron, Bihoreau gris
  Nyctidromus Gould, 1838 -- valid -- Pauraques
  Nyctidromus albicollis (J. F. Gmelin, 1789) -- valid -- Common Pauraque, Chotacabras pauraque, Pauraque
  Nyctinomops Miller, 1902 -- valid
  Nyctinomops femorosaccus (Merriam, 1889) -- valid -- Murciélago-cola suelta de bolsa, Pocketed Free-tailed Bat
  Nyctinomops macrotis (Gray, 1840) -- valid -- Murciélago-cola suelta mayor, Big Free-tailed Bat
  Oceanites Keyserling & J. H. Blasius, 1840 -- valid -- Wilson's Storm-Petrels
  Oceanites oceanicus (Kuhl, 1820) -- valid -- Wilson's Storm Petrel, Wilson's Storm-Petrel, Paíño de Wilson, Océanite de Wilson
  Oceanodroma Reichenbach, 1853 -- valid -- Dark Storm Petrels
  Oceanodroma castro (Harcourt, 1851) -- valid -- Paíño de Harcourt, Band-rumped Storm Petrel, Océanite de Castro, Band-rumped Storm-Petrel
  Oceanodroma furcata (Gmelin, 1789) -- valid -- Fork-tailed Storm-Petrel, Fork-tailed Storm Petrel, Océanite à queue fourchue
  Oceanodroma homochroa (Coues, 1864) -- valid -- Paíño cenizo, Ashy Storm Petrel, Ashy Storm-Petrel, Océanite cendré
  Oceanodroma leucorhoa (Vieillot, 1818) -- valid -- Paíño de Leach, Leach's Storm-Petrel, Leach's Storm Petrel, Océanite cul-blanc
  Oceanodroma melania (Bonaparte, 1854) -- valid -- Paíño negro, Black Storm Petrel, Océanite noir, Black Storm-Petrel
  Oceanodroma microsoma (Coues, 1864) -- valid -- Least Storm-Petrel, Paíño mínimo, Océanite minute, Least Storm Petrel
  Oceanodroma tethys (Bonaparte, 1852) -- valid -- Wedge-rumped Storm-Petrel, Paíño de Galápagos, Océanite téthys, Wedge-rumped Storm Petrel
  Oceanodroma tristrami Salvin, 1896 -- valid -- Sooty Storm-Petrel, Tristram's Storm Petrel, Océanite de Tristram, Tristram's Storm-Petrel
  Ochotona Link, 1795 -- valid -- Pikas
  Ochotona collaris (Nelson, 1893) -- valid -- Collared Pika
  Ochotona princeps (Richardson, 1828) -- valid -- American Pika, Cony, Rock Rabbit, Hay-maker, Mouse Hare, Piping Hare, Whistling Hare, Little Chief Hare, Southern Pika
  Ochotonidae Thomas, 1897 -- valid -- Pikas
  Ochrotomys Osgood, 1909 -- valid -- Golden Mice
  Ochrotomys nuttalli (Harlan, 1832) -- valid -- Golden Mouse
  Odobenidae Allen, 1880 -- valid -- walruses
  Odobenus Brisson, 1762 -- valid -- walruses
  Odobenus rosmarus (Linnaeus, 1758) -- valid -- Walrus, morse
  Odocoileus Rafinesque, 1832 -- valid -- mule deer, white-tailed deer
  Odocoileus hemionus (Rafinesque, 1817) -- valid -- mule deer, Venado bura, Mule Deer
  Odocoileus virginianus (Zimmermann, 1780) -- valid -- white-tailed deer, Venado cola blanca, cerf de Virginie, White-tailed Deer
  Odocoileus virginianus virginianus (Zimmermann, 1780) -- valid -- white-tailed deer
  Odontoceti Flower, 1867 -- valid -- toothed whales
  Odontophoridae -- valid -- New World Quails
  Oenanthe Vieillot, 1816 -- valid -- Wheatears
  Oenanthe oenanthe (Linnaeus, 1758) -- valid -- Collalba norteña, Northern Wheatear, traquet motteux
  Ondatra Link, 1795 -- valid -- muskrats, Muskrat
  Ondatra zibethicus (Linnaeus, 1766) -- valid -- Muskbeaver, rat musqué, Muskrat, Common Muskrat
  Onychomys Baird, 1857 -- valid -- Grasshopper Mice
  Onychomys arenicola Mearns, 1896 -- valid -- Mearns's Grasshopper Mouse, Mearns' Grasshopper Mouse, Ratón-saltamontes arenero, Chihuahuan Grasshopper Mouse
  Onychomys leucogaster (Wied-Neuwied, 1841) -- valid -- Ratón-saltamontes norteño, Northern Grasshopper Mouse
  Onychomys torridus (Coues, 1874) -- valid -- Ratón-saltamontes sureño, Southern Grasshopper Mouse
  Opheodrys Fitzinger, 1843 -- valid -- Green Snakes, Greensnakes
  Opheodrys aestivus (Linnaeus, 1766) -- valid -- Rough Green Snake, Rough Greensnake, Culebra-verde rugosa
  Ophisaurus Daudin, 1803 -- valid -- Glass Lizards
  Ophisaurus attenuatus Baird in Cope, 1880 -- valid -- Slender Glass Lizard
  Ophisaurus compressus Cope, 1900 -- valid -- Island Glass Lizard
  Ophisaurus ventralis (Linnaeus, 1766) -- valid -- Eastern Glass Lizard
  Oporornis S. F. Baird, 1858 -- valid -- Mourning Warblers
  Oporornis agilis (A. Wilson, 1812) -- valid -- Paruline à gorge grise, Connecticut Warbler
  Oporornis formosus (A. Wilson, 1811) -- invalid -- Chipe patilludo, Kentucky Warbler, paruline du Kentucky
  Oporornis philadelphia (A. Wilson, 1810) -- invalid -- Chipe enlutado, Mourning Warbler, paruline triste
  Oporornis tolmiei (J. K. Townsend, 1839) -- invalid -- MacGillivray's Warbler, Chipe de Tolmie
  Orcinus Fitzinger, 1860 -- valid -- killer whales
  Orcinus orca (Linnaeus, 1758) -- valid -- Killer Whale, orca, Orca común, épaulard
  Oreamnos Rafinesque, 1817 -- valid -- mountain goats
  Oreamnos americanus (Blainville, 1816) -- valid -- Rocky Mountain goat, mountain goat, Mountain Goat
  Oreomystis Stejneger, 1903 -- valid -- Oreomystine Creepers
  Oreomystis bairdi (Stejneger, 1887) -- valid -- Kauai Creeper, Akikiki
  Oreomystis mana (S. B. Wilson, 1891) -- invalid -- Hawaii Creeper
  Oreortyx S. F. Baird, 1858 -- valid -- Mountain Quails
  Oreortyx pictus (Douglas, 1829) -- valid -- Colin des montagnes, Colín serrano, colim-serrano, Codorniz de montaña, Mountain Quail
  Oreoscoptes S. F. Baird, 1858 -- valid -- Sage Thrashers
  Oreoscoptes montanus (J. K. Townsend, 1837) -- valid -- Sage Thrasher, Cuitlacoche de chías
  Ortalis Merrem, 1786 -- valid -- Chachalacas
  Ortalis vetula (Wagler, 1830) -- valid -- Ortalide chacamel, Chachalaca norteña, aracuã-de-asas-azuis, Plain Chachalaca, Chachalaca vetula
  Orthorhyncus Lacépède, 1799 -- valid -- Crested Hummingbirds
  Orthorhyncus cristatus (Linnaeus, 1758) -- valid -- Antillean Crested Hummingbird
  Oryctolagus Lilljeborg, 1873 -- valid -- Old World rabbits
  Oryctolagus cuniculus (Linnaeus, 1758) -- valid -- European Rabbit, Wild Rabbit, Conejo
  Oryzomys Baird, 1857 -- valid -- Rice Rats
  Oryzomys couesi (Alston, 1877) -- valid -- Coues's Rice Rat, Coues' Rice Rat, Rata-arrocera de Coues, Coues' Oryzomys
  Oryzomys palustris (Harlan, 1837) -- valid -- Rata-arrocera de pantano, Marsh Rice Rat, Marsh Oryzomys
  Oryzomys palustris palustris (Harlan, 1837) -- invalid -- Marsh Rice Rat
  Otariidae Gray, 1825 -- valid -- eared seals, sea lions
  Otus Pennant, 1769 -- valid -- Scops-Owls
  Otus asio (Linnaeus, 1758) -- invalid -- Tecolote oriental, Eastern Screech-Owl, petit-duc maculé
  Otus flammeolus (Kaup, 1852) -- invalid -- Flammulated Owl, Tecolote ojo oscuro
  Otus nudipes (Daudin, 1800) -- invalid -- Puerto Rican Screech-Owl
  Otus sunia (Hodgson, 1836) -- valid -- Oriental Scops-Owl, Oriental Scops Owl
  Otus trichopsis (Wagler, 1832) -- invalid -- Whiskered Screech-Owl, Tecolote rítmico
  Ovibos Blainville, 1816 -- valid -- muskoxen
  Ovibos moschatus (Zimmermann, 1780) -- valid -- oomingmak, muskox, boeuf musqué, Muskox
  Ovis Linnaeus, 1758 -- valid -- sheep
  Ovis canadensis Shaw, 1804 -- valid -- bighorn sheep, Borrego cimarrón, Bighorn Sheep
  Ovis dalli Nelson, 1884 -- valid -- Dall's sheep, Fannin's sheep, Stone's sheep, dall sheep, Dall's Sheep
  Oxybelis Wagler, 1830 -- valid -- Vine Snakes, Vinesnakes
  Oxybelis aeneus (Wagler, 1824) -- valid -- Brown Vine Snake, Brown Vinesnake, Culebra-bejuquilla mexicana, Mexican Vine Snake
  Oxyura Bonaparte, 1828 -- valid -- Stiff-tailed Ducks
  Oxyura dominica (Linnaeus, 1766) -- invalid -- Masked Duck, Pato enmascarado
  Oxyura jamaicensis (J. F. Gmelin, 1789) -- valid -- Pato tepalcate, Ruddy Duck, Érismature rousse, Malvasía canela, pato-rabo-alçado-americano
  Pachyramphus G. R. Gray, 1840 -- valid -- Becards
  Pachyramphus aglaiae (Lafresnaye, 1839) -- valid -- Rose-throated Becard, Mosquero-cabezón degollado
  Padda Reichenbach, 1850 -- invalid
  Padda oryzivora (Linnaeus, 1758) -- invalid -- Java Sparrow
  Pagophila eburnea (Phipps, 1774) -- valid -- Ivory Gull, Mouette blanche, Gaviota marfileña, gaivota-marfim
  Palmeria Rothschild, 1893 -- valid -- Crested Honeycreepers
  Palmeria dolei (S. B. Wilson, 1891) -- valid -- 'Akohekohe, Crested Honeycreeper, Akohekohe
  Pandion Savigny, 1809 -- valid -- Ospreys
  Pandion haliaetus (Linnaeus, 1758) -- valid -- Gavilán pescador, Osprey, Balbuzard pêcheur, Western Osprey
  Panthera Oken, 1816 -- valid -- roaring cats
  Panthera onca (Linnaeus, 1758) -- valid -- Jaguar, Jaguar
  Pappogeomys Merriam, 1895 -- valid -- tuzas, Mexican Pocket Gophers
  Pappogeomys castanops (Baird, 1852) -- invalid -- Yellow-faced Pocket Gopher
  Parabuteo Ridgway, 1874 -- valid -- Harris' Hawks
  Parabuteo unicinctus (Temminck, 1824) -- valid -- Aguililla rojinegra, Harris' Hawk, Harris's Hawk, Buse de Harris
  Parascalops True, 1894 -- valid -- hairy-tailed moles
  Parascalops breweri (Bachman, 1842) -- valid -- Brewer's mole, taupe à queue velue, Hairy-tailed Mole
  Pardirallus Bonaparte, 1856 -- valid -- Spotted Rails
  Pardirallus maculatus (Boddaert, 1783) -- valid -- Spotted Rail, Rascón pinto
  Paridae Vigors, 1825 -- valid -- Chickadees, Titmice, Tits
  Paroaria Bonaparte, 1832 -- valid -- Neotropical Cardinals
  Paroaria capitata (d'Orbigny & Lafresnaye, 1837) -- valid -- Paroare à bec jaune, Cardenilla piquigualda, cavalaria, Yellow-billed Cardinal
  Paroaria coronata (J. F. Miller, 1776) -- valid -- Paroare huppé, Cardenilla crestada, cardeal, Red-crested Cardinal
  Paroreomyza Perkins, 1901 -- valid -- Paroreomyzine Creepers
  Paroreomyza flammea (S. B. Wilson, 1890) -- valid -- Kakawahie, Molokai Creeper
  Paroreomyza maculata (Cabanis, 1850) -- valid -- Alauwahio, Oahu Creeper, Oahu Alauahio
  Paroreomyza montana (S. B. Wilson, 1890) -- valid -- Maui Creeper, Maui Alauahio
  Parula Bonaparte, 1838 -- invalid -- Parulas
  Parula americana (Linnaeus, 1758) -- invalid -- Parula norteña, Northern Parula, paruline à collier
  Parula pitiayumi (Vieillot, 1817) -- invalid -- Parula tropical, Tropical Parula
  Parus Linnaeus, 1758 -- valid -- Titmice, Tits
  Parus atricapillus Linnaeus, 1766 -- invalid -- Black-capped Chickadee
  Parus bicolor Linnaeus, 1766 -- invalid -- Tufted Titmouse, Carbonero cresta negra
  Parus carolinensis Audubon, 1834 -- invalid -- Carolina Chickadee
  Parus cinctus Boddaert, 1783 -- invalid -- Siberian Tit
  Parus gambeli Ridgway, 1886 -- invalid -- Mountain Chickadee, Carbonero ceja blanca
  Parus hudsonicus J. R. Forster, 1772 -- invalid -- Boreal Chickadee
  Parus inornatus Gambel, 1845 -- invalid -- Plain Titmouse, Carbonero sencillo
  Parus rufescens J. K. Townsend, 1837 -- invalid -- Chestnut-backed Chickadee
  Parus sclateri O. Kleinschmidt, 1897 -- invalid -- Mexican Chickadee, Carbonero mexicano
  Parus wollweberi (Bonaparte, 1850) -- invalid -- Bridled Titmouse, Carbonero embridado
  Passer Brisson, 1760 -- valid -- Old World Sparrows
  Passer domesticus (Linnaeus, 1758) -- valid -- Gorrión casero, House Sparrow, moineau domestique
  Passer montanus (Linnaeus, 1758) -- valid -- Eurasian Sparrow, Eurasian Tree Sparrow
  Passerculus Bonaparte, 1838 -- valid -- Savannah Sparrows
  Passerculus sandwichensis (J. F. Gmelin, 1789) -- valid -- Chingolo sabanero, tico-tico-dos-prados, Savannah Sparrow, Gorrión sabanero, bruant des prés
  Passerella Swainson, 1837 -- valid -- Fox Sparrows
  Passerella iliaca (Merrem, 1786) -- valid -- Chingolo zorruno, tico-tico-raposino, Red Fox-sparrow, Fox Sparrow, bruant fauve, Gorrión rascador, Red Fox Sparrow
  Passeriformes -- valid -- Perching Birds, passereaux
  Passerina Vieillot, 1816 -- valid -- Varied Buntings
  Passerina amoena (Say, 1822) -- valid -- Lazuli Bunting, Colorín lázuli
  Passerina ciris (Linnaeus, 1758) -- valid -- Colorín sietecolores, Painted Bunting
  Passerina cyanea (Linnaeus, 1766) -- valid -- Indigo Bunting, passerin indigo, Colorín azul
  Passerina versicolor (Bonaparte, 1838) -- valid -- Varied Bunting, Colorín morado
  Pavo Linnaeus, 1758 -- valid -- Peafowl
  Pavo cristatus Linnaeus, 1758 -- valid -- Paon bleu, Pavo real común, pavão-azul, Common Peafowl, Indian Peafowl
  Pedioecetes Baird, 1858 -- invalid
  Pedioecetes phasianellus (Linnaeus, 1758) -- invalid -- Sharp-tailed Grouse
  Pelagodroma Reichenbach, 1853 -- valid -- White-faced Storm Petrel
  Pelagodroma marina (Latham, 1790) -- valid -- White-faced Storm Petrel, Océanite frégate, White-faced Storm-Petrel
  Pelamis Daudin, 1803 -- invalid -- Yellow-bellied Sea Snakes, Yellow-bellied Seasnakes
  Pelamis platurus (Linnaeus, 1766) -- invalid -- Yellow-bellied Sea Snake, Yellow-bellied Seasnake, Serpiente-marina pelágica
  Pelecanidae Rafinesque, 1815 -- valid -- Pelicans
  Pelecaniformes -- valid -- Pelicans, pélicans, Ibises, ibis, Herons, hérons
  Pelecanus Linnaeus, 1758 -- valid -- Pelicans
  Pelecanus conspicillatus Temminck, 1824 -- valid -- Australian Pelican
  Pelecanus erythrorhynchos Gmelin, 1789 -- valid -- Pelícano blanco, American White Pelican, Pélican d'Amérique
  Pelecanus occidentalis Linnaeus, 1766 -- valid -- Pelícano pardo, Brown Pelican, Pélican brun
  Peltophryne lemur Cope, 1869 -- valid -- Puerto Rican Crested Toad, Ridge-headed Toad
  Peponocephala Nishiwaki and Norris, 1966 -- valid -- melon-headed whales
  Peponocephala electra (Gray, 1846) -- valid -- Melon-headed Whale, Calderón, electra dolphin
  Perdix Brisson, 1760 -- valid -- Gray Partridges
  Perdix perdix (Linnaeus, 1758) -- valid -- Perdiz pardilla, charrela, Gray Partridge, perdrix grise, Grey Partridge
  Perisoreus Bonaparte, 1831 -- valid -- Gray Jays
  Perisoreus canadensis (Linnaeus, 1766) -- valid -- Gray Jay, mésangeai du Canada, Grey Jay
  Perochirus Boulenger, 1885 -- valid -- Polynesian Geckos, Micronesian Geckos
  Perochirus ateles (Duméril, 1856) -- valid -- Fragile Polynesian Gecko, Fragile Micronesian Gecko
  Perochirus scutellatus (Fischer, 1882) -- valid -- Giant Micronesian Gecko
  Perognathus Wied-Neuwied, 1839 -- valid -- pocket mice, Silky Pocket Mice
  Perognathus alticola Rhoads, 1894 -- invalid -- White-eared Pocket Mouse
  Perognathus amplus Osgood, 1900 -- valid -- Ratón-de abazones de Arizona, Arizona Pocket Mouse
  Perognathus baileyi Merriam, 1894 -- invalid -- Bailey's pocket mouse
  Perognathus californicus Merriam, 1889 -- invalid -- California pocket mouse
  Perognathus fallax Merriam, 1889 -- invalid -- San Diego pocket mouse
  Perognathus fasciatus Wied-Neuwied, 1839 -- valid -- Olive-backed Pocket Mouse
  Perognathus flavescens Merriam, 1889 -- valid -- Ratón-de abazones de pradera, Plains Pocket Mouse
  Perognathus flavus Baird, 1855 -- valid -- Ratón-de abazones sedoso, Silky Pocket Mouse
  Perognathus formosus Merriam, 1889 -- invalid -- long-tailed pocket mouse
  Perognathus hispidus Baird, 1858 -- invalid -- hispid pocket mouse
  Perognathus inornatus Merriam, 1889 -- valid -- San Joaquin Pocket Mouse
  Perognathus intermedius Merriam, 1889 -- invalid -- rock pocket mouse
  Perognathus longimembris (Coues, 1875) -- valid -- Ratón-de abazones menor, Little Pocket Mouse
  Perognathus nelsoni Merriam, 1894 -- invalid -- Nelson's pocket mouse
  Perognathus parvus (Peale, 1848) -- valid -- Great Basin Pocket Mouse
  Perognathus penicillatus Woodhouse, 1852 -- invalid -- desert pocket mouse
  Perognathus spinatus Merriam, 1889 -- invalid -- spiny pocket mouse
  Perognathus xanthonotus Grinnell, 1912 -- invalid -- Yellow-eared Pocket Mouse
  Peromyscus Gloger, 1841 -- valid -- Deer Mice, White-footed Mice
  Peromyscus attwateri J. A. Allen, 1895 -- valid -- Texas mouse, Texas Deermouse, Attwater's Mouse
  Peromyscus boylii (Baird, 1855) -- valid -- Ratón arbustero, Brush Mouse, Brush Deermouse
  Peromyscus californicus (Gambel, 1848) -- valid -- Ratón californiano, California Deermouse, California Mouse
  Peromyscus crinitus (Merriam, 1891) -- valid -- Ratón de cañada, Canyon Mouse, Canyon Deermouse
  Peromyscus difficilis (J. A. Allen, 1891) -- valid -- Zacatecan Deer Mouse, Ratón de roca, Southern Rock Deermouse, Rock Mouse
  Peromyscus eremicus (Baird, 1857) -- valid -- Ratón de cactus, Cactus Mouse, Cactus Deermouse
  Peromyscus gossypinus (Le Conte, 1853) -- valid -- Cotton Mouse, Cotton Deermouse
  Peromyscus gossypinus gossypinus (Le Conte, 1853) -- invalid -- cotton mouse
  Peromyscus leucopus (Rafinesque, 1818) -- valid -- souris à pattes blanches, White-footed Deermouse, White-footed Mouse
  Peromyscus maniculatus (Wagner, 1845) -- valid -- Ratón norteamericano, souris sylvestre, Deer Mouse, North American Deermouse
  Peromyscus melanotis J. A. Allen and Chapman, 1897 -- valid -- Ratón orejas negras, Black-eared Deermouse, Black-eared Mouse
  Peromyscus merriami Mearns, 1896 -- valid -- Mesquite Mouse, Ratón de Merriam, Merriam's Mouse, Merriam's Deermouse
  Peromyscus pectoralis Osgood, 1904 -- valid -- Ratón tobillo blanco, White-ankled Deermouse, White-ankled Mouse
  Peromyscus polionotus (Wagner, 1843) -- valid -- Oldfield Mouse, Oldfield Deermouse
  Peromyscus polionotus polionotus (Wagner, 1843) -- invalid -- Oldfield Mouse
  Peromyscus sitkensis Merriam, 1897 -- invalid -- Sitka mouse
  Peromyscus truei (Shufeldt, 1885) -- valid -- piñon mouse, Pinyon Mouse, Ratón piñonero, Piñon Deermouse
  Petrogale Gray, 1837 -- valid -- rock wallabies
  Petrogale penicillata (Gray, 1827) -- valid -- brush-tailed rock wallaby, Brush-tailed Rock-wallaby
  Petrosaurus Boulenger, 1885 -- valid -- Rock Lizards
  Petrosaurus mearnsi (Stejneger, 1894) -- valid -- Banded Rock Lizard, Lagartija-de piedra rayada
  Peucedramus Coues, 1875 -- valid -- Olive Warblers
  Peucedramus taeniatus (Du Bus de Gisignies, 1847) -- valid -- Olive Warbler, Ocotero enmascarado
  Phaeognathus hubrichti Highton, 1961 -- valid -- Red Hills Salamander
  Phaeoprogne Baird, 1865 -- invalid
  Phaeoprogne tapera (Linnaeus, 1766) -- invalid -- Brown-chested Martin
  Phaethon Linnaeus, 1758 -- valid -- Tropicbirds
  Phaethon aethereus Linnaeus, 1758 -- valid -- Rabijunco pico rojo, Phaéton à bec rouge, Red-billed Tropicbird
  Phaethon lepturus Daudin, 1802 -- valid -- Rabijunco cola blanca, Phaéton à bec jaune, White-tailed Tropicbird
  Phaethon rubricauda Boddaert, 1783 -- valid -- Rabijunco cola roja, Phaéton à brins rouges, Red-tailed Tropicbird
  Phaethontidae J. F. von Brandt, 1840 -- valid -- Tropicbirds
  Phainopepla S. F. Baird, 1858 -- valid -- Phainopeplas
  Phainopepla nitens (Swainson, 1838) -- valid -- Phainopepla, Capulinero negro
  Phalacrocoracidae Reichenbach, 1849 -- valid -- Cormorants, Shags
  Phalacrocorax Brisson, 1760 -- valid -- Cormorants
  Phalacrocorax auritus (Lesson, 1831) -- valid -- Cormorán orejudo, Double-crested Cormorant, Cormoran à aigrettes
  Phalacrocorax carbo (Linnaeus, 1758) -- valid -- Great Cormorant, Grand Cormoran
  Phalacrocorax melanoleucos (Vieillot, 1817) -- invalid -- Little Pied Cormorant
  Phalacrocorax olivaceus (Humboldt, 1805) -- invalid
  Phalacrocorax pelagicus Pallas, 1811 -- valid -- Pelagic Cormorant, Cormorán pelágico, Cormoran pélagique
  Phalacrocorax penicillatus (Brandt, 1837) -- valid -- Brandt's Cormorant, Cormorán de Brandt, Cormoran de Brandt
  Phalacrocorax urile (Gmelin, 1789) -- valid -- Red-faced Cormorant, Cormoran à face rouge
  Phalaenoptilus Ridgway, 1880 -- valid -- Poorwills
  Phalaenoptilus nuttallii (Audubon, 1844) -- valid -- Tapacamino tevíi, Common Poorwill
  Phalaropus Brisson, 1760 -- valid -- Phalaropes
  Phalaropus fulicarius (Linnaeus, 1758) -- valid -- Red Phalarope, Falaropo pico grueso, Phalarope à bec large, Falaropo picogrueso, falaropo-de-bico-grosso, Grey Phalarope
  Phalaropus lobatus (Linnaeus, 1758) -- valid -- Red-necked Phalarope, Falaropo cuello rojo, Phalarope à bec étroit, Falaropo picofino, falaropo-de-bico-fino
  Phalaropus tricolor (Vieillot, 1819) -- valid -- Falaropo pico largo, Wilson's Phalarope, Phalarope de Wilson, Falaropo tricolor, pisa-n'água
  Phasianidae -- valid -- Partridges, Turkeys, Grouse, Pheasants, Quail, cailles, faisans
  Phasianinae -- invalid -- Pheasants
  Phasianus Linnaeus, 1758 -- valid -- Pheasants
  Phasianus colchicus Linnaeus, 1758 -- valid -- Faisan de Colchide, Faisán vulgar, faisão, Common Pheasant, Ring-necked Pheasant, faisan de chasse, Faisán de collar
  Phenacomys Merriam, 1889 -- valid -- Heather Voles
  Phenacomys intermedius Merriam, 1889 -- valid -- phénacomys, Western Heather Vole, Heather Vole
  Pheucticus Reichenbach, 1850 -- valid -- Cardinal-Grosbeaks
  Pheucticus ludovicianus (Linnaeus, 1766) -- valid -- Picogordo pecho rosa, Rose-breasted Grosbeak, cardinal à poitrine rose
  Pheucticus melanocephalus (Swainson, 1827) -- valid -- Black-headed Grosbeak, Picogordo tigrillo
  Philodice Mulsant & J. Verreaux, 1866 -- invalid
  Philomachus Merrem, 1804 -- invalid -- Ruffs
  Philomachus pugnax (Linnaeus, 1758) -- invalid -- Ruff, combatant varié, Combattant varié
  Phoca Linnaeus, 1758 -- valid -- hair seals, harbor seals
  Phoca fasciata Zimmermann, 1783 -- invalid -- ribbon seal
  Phoca groenlandica Erxleben, 1777 -- invalid -- harp seal, phoque du Groenland
  Phoca hispida Schreber, 1775 -- invalid -- ringed seal, phoque annelé
  Phoca largha Pallas, 1811 -- valid -- Spotted Seal, largha seal
  Phoca vitulina Linnaeus, 1758 -- valid -- Harbor Seal, phoque commun, Foca común, common seal
  Phocidae Gray, 1821 -- valid -- earless seals, true seals
  Phocoena G. Cuvier, 1816 -- valid -- common porpoises, harbor porpoises
  Phocoena phocoena (Linnaeus, 1758) -- valid -- Harbor Porpoise, common porpoise, marsouin commun
  Phocoenoides Andrews, 1911 -- valid -- Dall's porpoises
  Phoenicopteridae Bonaparte, 1831 -- valid -- Flamingos
  Phoenicopteriformes -- valid -- Flamingos, flamants
  Phoenicopterus Linnaeus, 1758 -- valid -- Greater Flamingos
  Phoenicopterus ruber Linnaeus, 1758 -- valid -- Flamenco americano, Greater Flamingo, flamant rose, Flamant des Caraïbes, American Flamingo
  Phrynosoma Wiegmann, 1828 -- valid -- Horned Lizards
  Phrynosoma cornutum (Harlan, 1825) -- valid -- Texas Horned Lizard, Lagartija-cornuda texana
  Phrynosoma coronatum (Blainville, 1835) -- valid -- Coast Horned Lizard, Lagartija-cornuda de litoral
  Phrynosoma douglassii (Bell, 1829) -- invalid -- Short-horned Lizard
  Phrynosoma mcallii (Hallowell, 1852) -- valid -- Flat-tailed Horned Lizard, Lagartija-cornuda cola plana, Flat-tail Horned Lizard
  Phrynosoma modestum Girard in Baird and Girard, 1852 -- valid -- Round-tailed Horned Lizard, Lagartija-cornuda cola redonda, Roundtail Horned Lizard
  Phrynosoma platyrhinos Girard in Baird and Girard, 1852 -- valid -- Desert Horned Lizard, Lagartija-cornuda de desierto
  Phrynosoma solare Gray, 1845 -- valid -- Regal Horned Lizard, Lagartija-cornuda real
  Phyllodactylus Gray, 1828 -- valid -- Leaf-toed Geckos
  Phyllodactylus wirshingi Kerster and H. Smith, 1955 -- valid -- Greater Antillean Leaf-toed Gecko
  Phyllodactylus xanti Cope, 1863 -- valid -- Salamanquesa del Cabo, Xantus Leaf-toed Gecko
  Phyllorhynchus Stejneger, 1890 -- valid -- Leaf-nosed Snakes
  Phyllorhynchus browni Stejneger, 1890 -- valid -- Saddled Leaf-nosed Snake, Culebra-nariz lanceolada ensillada, Saddled Leafnose Snake, Pima Leafnose Snake, Maricopa Leafnose Snake
  Phyllorhynchus decurtatus (Cope, 1868) -- valid -- Spotted Leaf-nosed Snake, Culebra-nariz lanceolada pinta, Spotted Leafnose Snake
  Phylloscopus F. Boie, 1826 -- valid -- Willow Warblers
  Phylloscopus borealis (J. H. Blasius, 1858) -- valid -- Arctic Warbler
  Phylloscopus fuscatus (Blyth, 1842) -- valid -- Dusky Warbler
  Phylloscopus sibilatrix (Bechstein, 1793) -- invalid -- Wood Warbler
  Phyllostomidae Gray, 1825 -- valid -- New World leaf-nosed bats
  Physeter Linnaeus, 1758 -- valid -- sperm whales
  Physeter catodon Linnaeus, 1758 -- invalid -- Sperm Whale
  Physeteridae Gray, 1821 -- valid -- sperm whales
  Pica Brisson, 1760 -- valid -- Magpies
  Pica nuttalli (Audubon, 1837) -- valid -- Yellow-billed Magpie
  Pica pica (Linnaeus, 1758) -- valid -- Black-billed Magpie, pie bavarde, Eurasian Magpie
  Picidae -- valid -- Woodpeckers, Wrynecks, fourmiliers, pic-bois
  Piciformes -- valid -- Woodpeckers, pic-bois
  Picoides Lacépède, 1799 -- valid -- Pied Woodpeckers
  Picoides albolarvatus (Cassin, 1850) -- invalid -- White-headed Woodpecker
  Picoides arcticus (Swainson, 1832) -- valid -- Black-backed Woodpecker, pic à dos noir
  Picoides borealis (Vieillot, 1809) -- invalid -- Red-cockaded Woodpecker
  Picoides nuttallii (Gambel, 1843) -- invalid -- Nuttall's Woodpecker, Carpintero californiano
  Picoides pubescens (Linnaeus, 1766) -- invalid -- Downy Woodpecker, pic mineur, Carpintero velloso-menor
  Picoides scalaris (Wagler, 1829) -- invalid -- Ladder-backed Woodpecker, Carpintero mexicano
  Picoides stricklandi (Malherbe, 1845) -- invalid -- Strickland's Woodpecker, Carpintero de Strickland
  Picoides tridactylus (Linnaeus, 1758) -- valid -- Three-toed Woodpecker, pic tridactyle, Eurasian Three-toed Woodpecker
  Picoides villosus (Linnaeus, 1766) -- invalid -- Carpintero velloso-mayor, Hairy Woodpecker, pic chevelu
  Pinguinus Bonnaterre, 1791 -- valid -- Great Auks
  Pinguinus impennis (Linnaeus, 1758) -- valid -- Great Auk, Grand Pingouin, Alca gigante, torda-grande
  Pinicola Vieillot, 1808 -- valid -- Pine Grosbeaks
  Pinicola enucleator (Linnaeus, 1758) -- valid -- Pine Grosbeak, durbec des sapins
  Pipilo Vieillot, 1816 -- valid -- Towhees
  Pipilo aberti S. F. Baird, 1852 -- invalid -- Abert's Towhee, Toquí enmascarado
  Pipilo chlorurus (Audubon, 1839) -- valid -- Toquí coliverde, Toquí cola verde, Green-tailed Towhee, tohi à queue verte
  Pipilo erythrophthalmus (Linnaeus, 1758) -- valid -- Toquí flanquirrufo, pipilo-d'olho-vermelho, Rufous-sided Towhee, Toquí pinto, Eastern Towhee, tohi à flancs roux
  Pipilo fuscus Swainson, 1827 -- invalid -- Brown Towhee, Toquí pardo, Canyon Towhee
  Pipistrellus Kaup, 1829 -- valid -- pipistrelles
  Pipistrellus hesperus (H. Allen, 1864) -- invalid -- Pipistrelo del oeste americano, Western Pipistrelle
  Pipistrellus subflavus (F. Cuvier, 1832) -- invalid -- Pipistrelo del este americano, pipistrelle de l'est, Eastern Pipistrelle
  Piranga Vieillot, 1808 -- valid -- Northern Tanagers
  Piranga bidentata Swainson, 1827 -- valid -- Flame-colored Tanager, Tángara dorso rayado
  Piranga flava (Vieillot, 1822) -- valid -- Tángara encinera, Hepatic Tanager, Red Tanager
  Piranga ludoviciana (A. Wilson, 1811) -- valid -- Western Tanager, tangara à tête rouge, Tángara capucha roja
  Piranga olivacea (J. F. Gmelin, 1789) -- valid -- Tángara escarlata, Scarlet Tanager, tangara écarlate
  Piranga rubra (Linnaeus, 1758) -- valid -- Summer Tanager, tangara vermillon, Tángara roja
  Pitangus Swainson, 1827 -- valid -- Kiskadees
  Pitangus sulphuratus (Linnaeus, 1766) -- valid -- Great Kiskadee, Luis bienteveo
  Pitohui Lesson, 1831 -- valid -- Morning Birds
  Pitohui tenebrosus (Hartlaub & Finsch, 1868) -- invalid -- Palau Morning Bird
  Pituophis Holbrook, 1842 -- valid -- Bullsnakes, Gopher Snakes, Pine Snakes, Pinesnakes, Gophersnakes
  Pituophis melanoleucus (Daudin, 1803) -- valid -- Pine Snake, Pinesnake, Culebra-sorda toro, Eastern Pine Snake, Eastern Pinesnake
  Plecotus E. Geoffroy, 1818 -- valid -- big-eared bats
  Plecotus rafinesquii Lesson, 1827 -- invalid -- Rafinesque's big-eared bat
  Plecotus townsendii Cooper, 1837 -- invalid -- Townsend's big-eared bat
  Plectrophenax Stejneger, 1882 -- valid -- Snow Buntings
  Plectrophenax hyperboreus Ridgway, 1884 -- valid -- McKay's Bunting
  Plectrophenax nivalis (Linnaeus, 1758) -- valid -- Snow Bunting, bruant des neiges
  Plegadis Kaup, 1829 -- valid -- Glossy Ibises
  Plegadis falcinellus (Linnaeus, 1766) -- valid -- Ibis cara oscura, Glossy Ibis, Ibis falcinelle
  Plethodon cinereus (Green, 1818) -- valid -- Redback Salamander, salamandre rayée, Red-backed Salamander, Eastern Red-backed Salamander
  Plethodon dorsalis Cope, 1889 -- valid -- Zigzag Salamander, Zig-zag Salamander, Northern Zigzag Salamander
  Plethodon fourchensis Duncan and Highton, 1979 -- valid -- Fourche Mountain Salamander
  Plethodon glutinosus (Green, 1818) -- valid -- Slimy Salamander, Northern Slimy Salamander
  Plethodon jordani Blatchley, 1901 -- valid -- Appalachian Salamander, Jordan's Salamander, Red-cheeked Salamander
  Plethodon kentucki Mittleman, 1951 -- valid -- Kentucky Salamander, Cumberland Plateau Salamander
  Plethodon nettingi Green, 1938 -- valid -- Cheat Mountain Salamander
  Plethodon punctatus Highton, 1972 -- valid -- White-spotted Salamander, White Spotted Salamander, Cow Knob Salamander
  Plethodon shenandoah Highton and Worthington, 1967 -- valid -- Shenandoah Salamander
  Plethodon websteri Highton, 1979 -- valid -- Webster's Salamander
  Plethodontidae Gray, 1850 -- valid -- Lungless Salamanders
  Ploceidae Sundevall, 1836 -- valid -- Bishops, Weavers, Widowbirds
  Pluvialis Brisson, 1760 -- valid -- Golden-Plovers
  Pluvialis apricaria (Linnaeus, 1758) -- valid -- Greater Golden-Plover, European Golden-Plover, European Golden Plover, Pluvier doré, Chorlito dorado europeo, tarambola-dourada, Eurasian Golden Plover
  Pluvialis dominica (P. L. S. Müller, 1776) -- valid -- Lesser Golden-Plover, Chorlo dominico, American Golden-Plover, pluvier doré d'Amérique, American Golden Plover, Pluvier bronzé, Chorlito dorado americano, batuiruçu
  Pluvialis squatarola (Linnaeus, 1758) -- valid -- Chorlo gris, Black-bellied Plover, Grey Plover, Pluvier argenté, Chorlito gris, batuiruçu-de-axila-preta, tarambola-cinzenta
  Podiceps Latham, 1787 -- valid -- Typical Grebes
  Podiceps auritus (Linnaeus, 1758) -- valid -- Zambullidor cornudo, Grèbe esclavon, Horned Grebe
  Podiceps grisegena (Boddaert, 1783) -- valid -- Grèbe jougris, Red-necked Grebe
  Podiceps nigricollis C. L. Brehm, 1831 -- valid -- Zambullidor orejudo, Eared Grebe, Grèbe à cou noir, Black-necked Grebe
  Podicipedidae Bonaparte, 1831 -- valid -- Grebes
  Podicipediformes -- valid -- Grebes, grèbes
  Podomys Osgood, 1909 -- valid -- Florida mice
  Podomys floridanus (Chapman, 1889) -- valid -- Florida mouse, Florida Deermouse
  Poecile cinctus (Boddaert, 1783) -- valid -- Gray-headed Chickadee, Siberian Tit
  Poliolimnas Sharpe, 1893 -- invalid -- White-browed Rails
  Poliolimnas cinereus (Vieillot, 1819) -- invalid -- White-browed Rail
  Polioptila P. L. Sclater, 1855 -- valid -- Gnatcatchers
  Polioptila caerulea (Linnaeus, 1766) -- valid -- Perlita azulgris, Blue-gray Gnatcatcher, gobemoucherons gris-bleu, Blue-grey Gnatcatcher
  Polioptila melanura Lawrence, 1857 -- valid -- Perlita del desierto, Black-tailed Gnatcatcher
  Polioptila nigriceps S. F. Baird, 1864 -- valid -- Black-capped Gnatcatcher, Perlita sinaloense
  Polyborus Vieillot, 1816 -- invalid -- Caracaras
  Polyborus plancus (J. F. Miller, 1777) -- invalid -- Crested Caracara
  Polysticta Eyton, 1836 -- valid -- Steller's Eiders
  Polysticta stelleri (Pallas, 1769) -- valid -- Steller's Eider, Eider de Steller, Éider menor, êider-de-steller
  Pooecetes S. F. Baird, 1858 -- valid -- Vesper Sparrows
  Pooecetes gramineus (J. F. Gmelin, 1789) -- valid -- Chingolo coliblanco, Gorrión cola blanca, Vesper Sparrow, bruant vespéral
  Porphyrio Brisson, 1760 -- valid -- Swamphens
  Porphyrio porphyrio (Linnaeus, 1758) -- valid -- Purple Swamphen
  Porphyrula Blyth, 1852 -- invalid -- Gallinules
  Porphyrula martinica (Linnaeus, 1766) -- invalid -- Gallineta morada, Purple Gallinule, talève violacée
  Porzana Vieillot, 1816 -- valid -- Soras
  Porzana carolina (Linnaeus, 1758) -- valid -- Polluela sora, Sora, marouette de Caroline
  Porzana flaviventer (Boddaert, 1783) -- valid -- Yellow-breasted Crake, Polluela pecho amarillo
  Porzana monasa (Kittlitz, 1858) -- valid -- Kosrae Rail
  Porzana palmeri (Frohawk, 1892) -- valid -- Laysan Rail
  Porzana porzana (Linnaeus, 1766) -- valid -- Spotted Crake
  Porzana sandwichensis (Gmelin, 1789) -- valid -- Hawaiian Rail
  Porzana tabuensis (Gmelin, 1789) -- valid -- Sooty Rail, Spotless Crake
  Procellariidae Leach, 1820 -- valid -- fulmars, pétrels, Fulmars, Petrels, Shearwaters
  Procellariiformes -- valid -- Tube-nosed Swimmers, albatros, tubinares, pétrels
  Procelsterna Lafresnaye, 1842 -- invalid -- Blue-gray Noddys
  Procyon Storr, 1780 -- valid -- raccoons
  Procyon lotor (Linnaeus, 1758) -- valid -- Raccoon, Mapache común, common raccoon, raton laveur, Northern Raccoon
  Procyonidae Gray, 1825 -- valid -- procyonids
  Progne F. Boie, 1826 -- valid
  Progne chalybea (Gmelin, 1789) -- valid -- Gray-breasted Martin, Golondrina acerada, Grey-breasted Martin
  Progne cryptoleuca S. F. Baird, 1865 -- valid -- Cuban Martin
  Progne dominicensis (Gmelin, 1789) -- valid -- Caribbean Martin
  Progne subis (Linnaeus, 1758) -- valid -- Golondrina azulnegra, Purple Martin, hirondelle noire
  Proteidae Gray, 1825 -- invalid -- Mudpuppies, Olms, Waterdogs
  Protonotaria S. F. Baird, 1858 -- valid -- Prothonotary Warblers
  Protonotaria citrea (Boddaert, 1783) -- valid -- Chipe dorado, Paruline orangée, Prothonotary Warbler
  Prunella Vieillot, 1816 -- valid -- Accentors
  Prunella montanella (Pallas, 1776) -- valid -- Siberian Accentor
  Prunellidae Richmond, 1908 -- valid -- Accentors
  Psaltriparus Bonaparte, 1850 -- valid -- Bushtits
  Psaltriparus minimus (J. K. Townsend, 1837) -- valid -- Bushtit, Sastrecillo, American Bushtit
  Pseudacris Fitzinger, 1843 -- valid -- Chorus Frogs, Spring Peepers
  Pseudacris regilla (Baird and Girard, 1852) -- valid -- Northern Pacific Treefrog, Rana-de coro del pacífico, Pacific Chorus Frog, Pacific Treefrog
  Pseudemys Gray, 1856 -- valid -- red-bellied turtles, Cooters, cooter turtles
  Pseudemys alabamensis Baur, 1893 -- valid -- Alabama red-bellied turtle, Alabama Red-bellied Cooter
  Pseudemys concinna (Le Conte, 1830) -- valid -- River Cooter
  Pseudemys floridana (Le Conte, 1830) -- invalid -- Common Cooter
  Pseudemys nelsoni Carr, 1938 -- valid -- Florida Red-bellied Cooter
  Pseudemys rubriventris (Le Conte, 1830) -- valid -- red-bellied turtle, American red-bellied turtle, Northern Red-bellied Cooter
  Pseudobranchus striatus (LeConte, 1824) -- valid -- Dwarf Siren, Mud Siren, Northern Dwarf Siren
  Pseudonestor Rothschild, 1893 -- valid -- Pseudonestors
  Pseudonestor xanthophrys Rothschild, 1893 -- valid -- Maui Honeycreeper, Maui Parrotbill, Kiwikiu
  Pseudorca Reinhardt, 1862 -- valid -- false killer whales
  Pseudorca crassidens (Owen, 1846) -- valid -- False Killer Whale, Orca-falsa
  Pseudotriton Tschudi, 1838 -- valid -- Mud Salamanders, Red Salamanders
  Pseudotriton ruber (Sonnini de Manoncourt and Latreille, 1801) -- valid -- Red Salamander
  Psittacidae -- valid -- Cockatoos, Lories, Macaws, Parrots, aras, cacatoès, perroquets
  Psittaciformes -- valid -- Parrots, perroquets
  Psittacula Cuvier, 1800 -- valid -- Rose-ringed Parakeets
  Psittacula krameri (Scopoli, 1769) -- valid -- Rose-ringed Parakeet
  Psittirostra Temminck, 1820 -- valid -- 'O'us
  Pternohyla fodiens Boulenger, 1882 -- invalid -- Lowland Burrowing Treefrog, Rana-de árbol de tierras bajas
  Pterocles Temminck, 1815 -- valid -- Sandgrouse
  Pterocles exustus Temminck, 1825 -- valid -- Chestnut-bellied Sandgrouse, Ganga à ventre brun
  Pteroclididae -- valid -- Sandgrouse
  Pteronotus Gray, 1838 -- valid -- moustached bats, naked-backed bats
  Pteronotus parnellii (Gray, 1843) -- valid -- Parnell's Mustached Bat, Murciélago-bigotudo de Parnell, Common Mustached Bat, Parnell's Common Mustached Bat
  Pteronotus quadridens (Gundlach, 1840) -- valid -- Sooty Mustached Bat
  Pteropodidae Gray, 1821 -- valid -- flying foxes, Old World fruit bats, megabats, non-echolocating bats
  Pteropus Brisson, 1762 -- valid -- flying foxes
  Pteropus admiralitatum Thomas, 1894 -- valid -- Admiralty Flying Fox
  Pteropus insularis Hombron and Jacquinot in Jacquinot and Pucheran, 1853 -- invalid -- Truk Flying Fox, Ruck Flying Fox
  Pteropus mariannus Desmarest, 1822 -- valid -- Mariana Flying Fox, Mariana Fruit Bat, Marianas Flying Fox
  Pteropus molossinus Temminck, 1853 -- valid -- Ponape Flying Fox, Caroline Flying Fox, Pohnpei Flying Fox
  Pteropus phaeocephalus Thomas, 1882 -- invalid -- Mortlock Flying Fox, Mortlock Fruit Bat
  Pteropus pilosus K. Andersen, 1908 -- valid -- large Palau flying fox, Palau flying fox, Large Pelew Flying Fox
  Pteropus samoensis Peale, 1848 -- valid -- Samoa Flying Fox, Samoan Flying Fox, Common Samoan Flying Fox
  Pteropus tokudae Tate, 1934 -- valid -- Tokuda's Flying Fox, Guam Flying Fox, Little Mariana Fruit Bat
  Ptilinopus Swainson, 1825 -- valid -- Fruit-Doves
  Ptilinopus pelewensis Hartlaub & Finsch, 1868 -- valid -- Palau Fruit-Dove, Palau Fruit Dove
  Ptilinopus perousii Peale, 1849 -- valid -- Many-colored Fruit-Dove, Many-colored Fruit Dove
  Ptilinopus porphyraceus (Temminck, 1821) -- valid -- Purple-capped Fruit-Dove, Crimson-crowned Fruit Dove
  Ptilinopus roseicapilla (R. Lesson, 1831) -- valid -- Marianas Fruit-Dove, Mariana Fruit Dove
  Ptilogonatidae Baird, 1858 -- valid -- Silky-Flycatchers
  Ptychoramphus J. F. Brandt, 1837 -- valid -- Cassin's Auklets
  Ptychoramphus aleuticus (Pallas, 1811) -- valid -- Cassin's Auklet, Alcuela oscura, Starique de Cassin, Mérgulo sombrío, mérgulo-sombrio
  Pycnonotidae G. R. Gray, 1840 -- valid -- Bulbuls
  Pycnonotus F. Boie, 1826 -- valid -- Bulbuls
  Pycnonotus cafer (Linnaeus, 1766) -- valid -- Red-vented Bulbul
  Pycnonotus jocosus (Linnaeus, 1758) -- valid -- Red-whiskered Bulbul
  Pyrocephalus Gould, 1839 -- valid -- Vermilion Flycatchers
  Pyrocephalus rubinus (Boddaert, 1783) -- valid -- Mosquero cardenal, Vermilion Flycatcher
  Pyrrhula Brisson, 1760 -- valid -- Eurasian Bullfinches
  Pyrrhula pyrrhula (Linnaeus, 1758) -- valid -- Eurasian Bullfinch
  Pyrroglaux Yamashina, 1938 -- valid -- Palau Owls
  Pyrroglaux podargina (Hartlaub & Finsch, 1872) -- valid -- Palau Owl
  Quiscalus Vieillot, 1816 -- valid -- Grackles
  Quiscalus major Vieillot, 1819 -- valid -- Boat-tailed Grackle
  Quiscalus mexicanus (Gmelin, 1788) -- valid -- Great-tailed Grackle, Zanate mexicano
  Quiscalus niger (Boddaert, 1783) -- valid -- Greater Antillean Grackle
  Quiscalus quiscula (Linnaeus, 1758) -- valid -- Common Grackle, quiscale bronzé
  Rallidae -- valid -- Coots, Rails, foulques, gallinules, râles, Waterhens
  Rallina G. R. Gray, 1846 -- valid -- Red-legged Crakes
  Rallina eurizonoides (Lafresnaye, 1845) -- valid -- Slaty-legged Crake
  Rallina fasciata (Raffles, 1822) -- valid -- Red-legged Crake
  Rallus Linnaeus, 1758 -- valid -- Greater Rails
  Rallus elegans Audubon, 1834 -- valid -- Rascón real, King Rail, râle élégant
  Rallus limicola Vieillot, 1819 -- valid -- Rascón limícola, Virginia Rail, râle de Virginie
  Rallus longirostris Boddaert, 1783 -- valid -- Clapper Rail, Rascón picudo
  Rallus owstoni (Rothschild, 1895) -- invalid -- Guam Rail
  Rallus philippensis Linnaeus, 1766 -- invalid -- Banded Rail
  Rallus wakensis (Rothschild, 1903) -- invalid -- Wake Rail
  Ramphotyphlops Fitzinger, 1843 -- valid -- Long-tailed Blind Snakes, Long Tailed Blindsnakes
  Rana aurora Baird and Girard, 1852 -- valid -- Red-legged Frog, Rana pata roja, Northern Red-legged Frog
  Rana berlandieri Baird, 1859 -- invalid -- Rio Grande Frog, Rio Grande Leopard Frog, Rana del Río Grande
  Rana cascadae Slater, 1939 -- valid -- Cascades Frog
  Rana chiricahuensis Platz and Mecham, 1979 -- invalid -- Chiricahua Leopard Frog, Rana de chiricahua
  Rana clamitans Latreille in Sonnini de Manoncourt and Latreille, 1801 -- invalid -- Green Frog, grenouille verte
  Rana fisheri Stejneger, 1893 -- invalid -- Vegas Valley Leopard Frog
  Rana okaloosae Moler, 1985 -- invalid -- Florida Bog Frog
  Rana onca Cope in Yarrow, 1875 -- invalid -- Relict Leopard Frog
  Rana rugosa Temminck and Schlegel, 1838 -- invalid -- Wrinkled Frog
  Rana sphenocephala Cope, 1886 -- invalid -- Southern Leopard Frog
  Rana temporaria Linnaeus, 1758 -- valid -- European frog
  Rana utricularia sphenocephala Cope, 1886 -- invalid -- Florida Leopard Frog
  Rana yavapaiensis Platz and Frost, 1984 -- invalid -- Yavapai Frog, Lowland Leopard Frog, Rana de Yavapai, Yavapai Leopard Frog
  Rangifer C. H. Smith, 1827 -- valid -- caribou, reindeer
  Rangifer tarandus (Linnaeus, 1758) -- valid -- reindeer, caribou, caribou, Reindeer
  Ranidae Rafinesque, 1814 -- invalid -- Ranids, Riparian Frogs, Ranid Frogs, True Frogs
  Rattus Fischer, 1803 -- valid -- Old World Rats
  Rattus exulans (Peale, 1848) -- valid -- Polynesian rat, Little Rat, Pacific Rat
  Rattus norvegicus (Berkenhout, 1769) -- valid -- rat surmulot, Brown Rat, Norway Rat
  Rattus rattus (Linnaeus, 1758) -- valid -- rat noir, House Rat, Black Rat, Roof Rat
  Recurvirostra Linnaeus, 1758 -- valid -- Avocets
  Recurvirostra americana J. F. Gmelin, 1789 -- valid -- Avoceta americana, American Avocet, Avocette d'Amérique, alfaiate-de-pescoço-pardo
  Regina Baird and Girard, 1853 -- valid -- Crayfish Snakes, Crawfish Snakes
  Regina alleni (Garman, 1874) -- invalid -- Striped Crayfish Snake
  Regina grahamii Baird and Girard, 1853 -- valid -- Graham's Crayfish Snake, Graham's Crawfish Snake
  Regina rigida (Say, 1825) -- invalid
  Regina septemvittata (Say, 1825) -- valid -- Queen Snake, Queensnake
  Regulus Cuvier, 1800 -- valid -- Kinglets
  Regulus calendula (Linnaeus, 1766) -- valid -- Reyezuelo de rojo, Ruby-crowned Kinglet, roitelet à couronne rubis
  Regulus satrapa Lichtenstein, 1823 -- valid -- Reyezuelo de oro, Golden-crowned Kinglet, roitelet à couronne dorée
  Reithrodontomys Giglioli, 1874 -- valid -- Harvest Mice, American Harvest Mice
  Reithrodontomys fulvescens J. A. Allen, 1894 -- valid -- Ratón-cosechero leonado, Fulvous Harvest Mouse
  Reithrodontomys humulis (Audubon and Bachman, 1841) -- valid -- Eastern Harvest Mouse
  Reithrodontomys megalotis (Baird, 1857) -- valid -- Ratón-cosechero común, Western Harvest Mouse
  Reithrodontomys montanus (Baird, 1855) -- valid -- Ratón-cosechero de pradera, Plains Harvest Mouse
  Reithrodontomys raviventris Dixon, 1908 -- valid -- Salt-marsh Harvest Mouse
  Remizidae Olphe-Galliard, 1891 -- valid -- Penduline Tits, Verdins
  Reptilia Laurenti, 1768 -- valid -- répteis, reptiles, Reptiles
  Rhadinaea Cope, 1863 -- valid -- Woodlands Snakes, Woodland Snakes, Littersnakes
  Rhadinaea flavilata (Cope, 1871) -- valid -- Pine Woods Snake, Pine Woods Littersnake
  Rhineura floridana (Baird, 1858) -- valid -- Florida Worm Lizard
  Rhinocheilus Baird and Girard, 1853 -- valid -- Long-nosed Snakes
  Rhinocheilus lecontei Baird and Girard, 1853 -- valid -- Long-nosed Snake, Culebra narigona, Longnose Snake, Western Long-nosed Snake
  Rhinophrynus Duméril and Bibron, 1841 -- valid -- Burrowing Toads
  Rhipidura Vigors & Horsfield, 1827 -- valid -- Fantails
  Rhipidura lepida Hartlaub & Finsch, 1868 -- valid -- Palau Fantail, Palau fantail flycatcher
  Rhipidura rufifrons (Latham, 1802) -- valid -- Rufous-fronted Fantail, Rufous Fantail
  Rhodacanthis Rothschild, 1892 -- valid -- Koa-Finches
  Rhodacanthis flaviceps Rothschild, 1892 -- valid -- Lesser Koa-Finch, Lesser Koa Finch
  Rhodacanthis palmeri Rothschild, 1892 -- valid -- Greater Koa-Finch, Greater Koa Finch
  Rhodothraupis Ridgway, 1898 -- valid -- Crimson-collared Grosbeaks
  Rhodothraupis celaeno (Deppe, 1830) -- valid -- Crimson-collared Grosbeak, Picogordo cuello rojo
  Rhyacotriton Dunn, 1920 -- valid -- Olympic Salamanders, Olympic Torrent Salamanders, Torrent Salamanders
  Rhyacotriton olympicus (Gaige, 1917) -- valid -- Olympic Salamander, Olympic Torrent Salamander
  Rhynchopsitta Bonaparte, 1854 -- valid -- Thick-billed Parrots
  Rhynchopsitta pachyrhyncha (Swainson, 1827) -- valid -- Thick-billed Parrot, Cotorra-serrana occidental
  Ridgwayia Stejneger, 1883 -- valid -- Aztec Thrushes
  Ridgwayia pinicola (P. L. Sclater, 1859) -- valid -- Mirlo pinto, Aztec Thrush
  Riparia T. Forster, 1817 -- valid -- Bank Swallows
  Riparia riparia (Linnaeus, 1758) -- valid -- Golondrina ribereña, Bank Swallow, hirondelle de rivage, Sand Martin
  Rissa brevirostris (Bruch, 1855) -- valid -- Red-legged Kittiwake, Mouette des brumes, Gaviota piquicorta, gaivota-de-pernas-vermelhas
  Rissa tridactyla (Linnaeus, 1758) -- valid -- Gaviota pata negra, Black-legged Kittiwake, Mouette tridactyle, Gaviota tridáctila, gaivota-tridáctila
  Rostrhamus Lesson, 1830 -- valid -- Snail Kites
  Rostrhamus sociabilis (Vieillot, 1817) -- valid -- Snail Kite, Gavilán caracolero, Milan des marais
  Rukia Momiyama, 1922 -- valid -- Greater White-eyes
  Rukia longirostra (Taka-Tsukasa & Yamashina, 1931) -- valid -- Pohnpei Greater White-eye, Ponape Greater White-eye, Long-billed White-eye
  Rukia oleaginea (Hartlaub & Finsch, 1872) -- invalid -- Yap Greater White-eye
  Rukia palauensis (Reichenow, 1915) -- invalid -- Palau Greater White-eye
  Rukia ruki (Hartert, 1897) -- valid -- Truk Greater White-eye, Teardrop White-eye
  Rynchops Linnaeus, 1758 -- valid -- Skimmers
  Rynchops nigra Linnaeus, 1758 -- invalid
  Saimiri Voigt in G. Cuvier, 1831 -- valid -- squirrel monkeys
  Saimiri sciureus (Linnaeus, 1758) -- valid -- South American Squirrel Monkey, Common Squirrel Monkey, Guianan Squirrel Monkey
  Salpinctes Cabanis, 1847 -- valid -- Rock Wrens
  Salpinctes obsoletus (Say, 1822) -- valid -- Rock Wren, Chivirín saltarroca
  Salvadora Baird and Girard, 1853 -- valid -- Patch-nosed Snakes
  Salvadora deserticola Schmidt, 1940 -- valid -- Big Bend Patch-nosed Snake, Culebra-parchada de Big Bend, Big Bend Patchnose Snake
  Salvadora grahamiae Baird and Girard, 1853 -- valid -- Mountain Patch-nosed Snake, Culebra-parchada de montaña, Mountain Patchnose Snake, Eastern Patch-nosed Snake
  Salvadora hexalepis (Cope, 1867) -- valid -- Western Patch-nosed Snake, Culebra-parchada de cabestrillo, Western Patchnose Snake
  Sauromalus A. H. A. Duméril, 1856 -- valid -- Chuckwallas
  Sauromalus obesus (Baird, 1859) -- invalid -- Chuckwalla, Chuckwalla común
  Saurothera Vieillot, 1816 -- valid -- Lizard-Cuckoos
  Saurothera vieilloti Bonaparte, 1850 -- valid -- Puerto Rican Lizard-Cuckoo
  Saxicola torquatus (Linnaeus, 1766) -- valid
  Sayornis Bonaparte, 1854 -- valid -- Phoebes
  Sayornis nigricans (Swainson, 1827) -- valid -- Black Phoebe, Papamoscas negro
  Sayornis phoebe (Latham, 1790) -- valid -- Papamoscas fibí, Eastern Phoebe, moucherolle phébi
  Sayornis saya (Bonaparte, 1825) -- valid -- Papamoscas llanero, Say's Phoebe, moucherolle à ventre roux
  Scalopus Desmarest, 1804 -- invalid
  Scalopus aquaticus (Linnaeus, 1758) -- valid -- topos, Topo occidental, Eastern Mole
  Scapanus Pomel, 1848 -- valid -- western moles
  Scapanus latimanus (Bachman, 1842) -- valid -- topociego, Topo pata ancha, Broad-footed Mole
  Scapanus orarius True, 1896 -- valid -- Pacific mole, red-footed mole, Coast Mole
  Scapanus townsendii (Bachman, 1839) -- valid -- snow mole, Townsend's Mole
  Sceloporus clarkii Baird and Girard, 1852 -- valid -- Clark's Spiny Lizard
  Sceloporus graciosus Baird and Girard, 1852 -- valid -- Lagartija-escamosa de Artemisa, Sagebrush Lizard
  Sceloporus grammicus Wiegmann, 1828 -- valid -- Mesquite Lizard, Lagartija-escamosa de mezquite, Graphic Spiny Lizard
  Sceloporus jarrovii Cope in Yarrow, 1875 -- valid -- Yarrow's Spiny Lizard, Mountain Spiny Lizard
  Sceloporus magister Hallowell, 1854 -- valid -- Desert Spiny Lizard, Lagartija-escamosa de desierto
  Sceloporus merriami Stejneger, 1904 -- valid -- Canyon Lizard, Lagartija-escamosa de cañón
  Sceloporus occidentalis Baird and Girard, 1852 -- valid -- Western Fence Lizard, Lagartija-escamosa del occidente
  Sceloporus olivaceus H. M. Smith, 1934 -- valid -- Texas Spiny Lizard, Lagartija-escamosa de Texas
  Sceloporus orcutti Stejneger, 1893 -- valid -- Granite Spiny Lizard, Lagartija-escamosa de granito
  Sceloporus poinsettii Baird and Girard, 1852 -- valid -- Crevice 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 undulatus (Bosc and Daudin in Sonnini and Latreille, 1801) -- valid -- Eastern Fence Lizard, Fence Lizard, Plateau Lizard, Prairie Lizard, Lagartija-escamosa de pradera
  Sceloporus variabilis Wiegmann, 1834 -- valid -- Rose-bellied Lizard, Lagartija-escamosa panza rosada, Rosebelly Lizard
  Sceloporus virgatus H. M. Smith, 1938 -- valid -- Striped Plateau Lizard, Lagartija-escamosa rayada
  Sceloporus woodi Stejneger, 1918 -- valid -- Florida Scrub Lizard
  Scincella Mittleman, 1950 -- valid -- ground skinks
  Scincella lateralis (Say in James, 1822) -- valid -- Ground Skink, Encinela norteña, Little Brown Skink
  Scincidae Oppel, 1811 -- valid -- Skinks
  Sciuridae Fischer de Waldheim, 1817 -- valid -- squirrels, marmots, chipmunks
  Sciurus Linnaeus, 1758 -- valid -- tree squirrels
  Sciurus aberti Woodhouse, 1853 -- valid -- Ardilla de Albert, Abert's Squirrel
  Sciurus arizonensis Coues, 1867 -- valid -- Ardilla de Arizona, Arizona Gray Squirrel
  Sciurus carolinensis Gmelin, 1788 -- valid -- gray squirrel, écureuil gris, Eastern Gray Squirrel
  Sciurus griseus Ord, 1818 -- valid -- Ardilla gris, Western Gray Squirrel
  Sciurus nayaritensis J. A. Allen, 1890 -- valid -- Nayarit squirrel, Ardilla de Nayarit, Mexican Fox Squirrel
  Sciurus niger Linnaeus, 1758 -- valid -- fox squirrel, Ardilla zorra, Eastern Fox Squirrel
  Sciurus niger niger Linnaeus, 1758 -- valid -- fox squirrel
  Scolopacidae Rafinesque, 1815 -- valid -- Sandpipers, bécasseaux, Snipes
  Scolopax Linnaeus, 1758 -- valid -- Woodcocks
  Scolopax minor J. F. Gmelin, 1789 -- valid -- Chocha americana, American Woodcock, Bécasse d'Amérique, galinhola-pequena
  Scolopax rusticola Linnaeus, 1758 -- valid -- Eurasian Woodcock, Bécasse des bois, Chocha perdiz, galinhola
  Seiurus Swainson, 1827 -- valid -- Ovenbirds
  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 Swainson, 1832 -- valid -- Rufous Hummingbirds
  Selasphorus platycercus (Swainson, 1827) -- valid -- Broad-tailed Hummingbird, Zumbador cola ancha
  Selasphorus rufus (J. F. Gmelin, 1788) -- valid -- Rufous Hummingbird, Zumbador rufo
  Selasphorus sasin (R. Lesson, 1829) -- valid -- Allen's Hummingbird, Zumbador de Allen
  Seminatrix Cope, 1895 -- invalid -- Swamp Snakes, Swampsnakes
  Seminatrix pygaea (Cope, 1871) -- invalid -- Black Swamp Snake, Black Swampsnake
  Serinus Koch, 1816 -- valid -- Canaries
  Serinus canaria (Linnaeus, 1758) -- valid -- Common Canary, Atlantic Canary
  Serinus mozambicus (P. L. Statius Müller, 1776) -- invalid -- Yellow-fronted Canary
  Serpentes Linnaeus, 1758 -- valid -- Snakes, cobra, serpente, serpents
  Setophaga Swainson, 1827 -- valid -- Redstarts
  Setophaga ruticilla (Linnaeus, 1758) -- valid -- Chipe flameante, American Redstart, Paruline flamboyante
  Sialia Swainson, 1827 -- valid -- Bluebirds
  Sialia currucoides (Bechstein, 1798) -- valid -- Azulejo pálido, Mountain Bluebird, merlebleu azuré
  Sialia mexicana Swainson, 1832 -- valid -- Azulejo garganta azul, Western Bluebird, merle-bleu de l'ouest
  Sialia sialis (Linnaeus, 1758) -- valid -- Azulejo garganta canela, Eastern Bluebird, merlebleu de l'est
  Sicalis F. Boie, 1828 -- valid -- Saffron Finches
  Sicalis flaveola (Linnaeus, 1766) -- valid -- Sicale bouton-d'or, Chirigüe azafranado, canário-da-terra, Saffron Finch
  Sigmodon Say and Ord, 1825 -- valid -- Cotton Rats
  Sigmodon arizonae Mearns, 1890 -- valid -- Rata-algodonera de Arizona, Arizona Cotton Rat
  Sigmodon fulviventer J. A. Allen, 1889 -- valid -- Rata-algodonera vientre leonado, Tawny-bellied Cotton Rat, Zacatecan Cotton Rat
  Sigmodon hispidus Say and Ord, 1825 -- valid -- Rata-algodonera crespa, Hispid Cotton Rat
  Sigmodon ochrognathus Bailey, 1902 -- valid -- Rata-algodonera nariz amarilla, Yellow-nosed Cotton Rat
  Sirenia Illiger, 1811 -- valid -- dugongs, manatees, sea cows, sirens
  Sistrurus Garman, 1884 -- valid -- Massasaugas, Pigmy Rattlesnakes, Pygmy Rattlesnakes
  Sistrurus catenatus (Rafinesque-Schmaltz, 1818) -- valid -- Massasauga, Víbora-cascabel pigmea-norteña, Eastern Massasauga
  Sistrurus miliarius (Linnaeus, 1766) -- valid -- Pigmy Rattlesnake, Pygmy Rattlesnake
  Sitta Linnaeus, 1758 -- valid -- Nuthatches
  Sitta canadensis Linnaeus, 1766 -- valid -- Sita canadiense, Red-breasted Nuthatch, sittelle à poitrine rousse
  Sitta carolinensis Latham, 1790 -- valid -- Sita pecho blanco, White-breasted Nuthatch, sittelle à poitrine blanche
  Sitta pusilla Latham, 1790 -- valid -- Brown-headed Nuthatch
  Sitta pygmaea Vigors, 1839 -- valid -- Sita enana, Pygmy Nuthatch
  Sittidae Lesson, 1828 -- valid -- Nuthatches
  Somateria Leach, 1819 -- valid -- Greater Eiders, Typical Eiders
  Somateria fischeri (J. F. Brandt, 1847) -- valid -- Spectacled Eider, Eider à lunettes, Éider de anteojos, êider-de-lunetas
  Somateria mollissima (Linnaeus, 1758) -- valid -- Common Eider, Eider à duvet, Éider común, êider
  Somateria spectabilis (Linnaeus, 1758) -- valid -- King Eider, Eider à tête grise, Éider real, êider-real
  Sonora Baird and Girard, 1853 -- valid -- North American Ground Snakes, North American Groundsnakes
  Sonora semiannulata Baird and Girard, 1853 -- valid -- Ground Snake, Groundsnake, Culebra-suelera semianillada, Western Groundsnake
  Sorex Linnaeus, 1758 -- valid -- red-toothed shrews
  Sorex alaskanus Merriam, 1900 -- valid -- Glacier Bay Water Shrew
  Sorex arcticus Kerr, 1792 -- valid -- black-backed shrew, saddle-back shrew, musaraigne arctique, Arctic Shrew, musaraigne nordique
  Sorex arizonae Diersing and Hoffmeister, 1977 -- valid -- Musaraña de Arizona, Arizona Shrew
  Sorex bendirii (Merriam, 1884) -- valid -- Bendire's shrew, Bendire's water shrew, Pacific marsh shrew, Marsh Shrew, Pacific water shrew
  Sorex cinereus Kerr, 1792 -- valid -- common shrew, masked shrew, musaraigne cendrée, Cinereus Shrew
  Sorex dispar Batchelder, 1911 -- valid -- rock shrew, musaraigne longicaude, gray long-tailed shrew, Long-tailed Shrew
  Sorex fontinalis Hollister, 1911 -- invalid -- eastern shrew, Maryland shrew
  Sorex fumeus G. M. Miller, 1895 -- valid -- smokey shrew, musaraigne fuligineuse, Smoky Shrew
  Sorex gaspensis Anthony and Goodwin, 1924 -- valid -- musaraigne de Gaspé, Gaspé Shrew
  Sorex haydeni Baird, 1857 -- valid -- Hayden's shrew, Prairie Shrew
  Sorex hoyi Baird, 1857 -- valid -- Pygmy Shrew, musaraigne pygmée, American Pygmy Shrew
  Sorex hydrodromus Dobson, 1889 -- invalid -- Pribilof Islands shrew
  Sorex jacksoni Hall and Gilmore, 1932 -- valid -- St. Lawrence Island Shrew
  Sorex longirostris Bachman, 1837 -- valid -- Southeastern Shrew
  Sorex lyelli Merriam, 1902 -- valid -- Lyell shrew, Mount Lyell shrew, Mt. Lyell Shrew
  Sorex merriami Dobson, 1890 -- valid -- Merriam's Shrew
  Sorex monticolus Merriam, 1890 -- valid -- Montane Shrew, Dusky Shrew
  Sorex nanus Merriam, 1895 -- valid -- Rocky Mountain dwarf shrew, Dwarf Shrew
  Sorex ornatus Merriam, 1895 -- valid -- Suisun shrew, Musaraña adornada, Ornate Shrew
  Sorex pacificus Coues, 1877 -- valid -- Pacific Shrew
  Sorex palustris Richardson, 1828 -- valid -- northern water shrew, Water Shrew, musaraigne palustre, American Water Shrew
  Sorex preblei Jackson, 1922 -- valid -- malheur shrew, Preble's Shrew
  Sorex tenellus Merriam, 1895 -- valid -- great basin dwarf shrew, Inyo Shrew
  Sorex trowbridgii Baird, 1857 -- valid -- Trowbridge's Shrew
  Sorex tundrensis Merriam, 1900 -- valid -- Tundra Shrew
  Sorex vagrans Baird, 1857 -- valid -- wandering shrew, Vagrant Shrew
  Soricidae G. Fischer, 1814 -- valid -- shrews
  Spermophilus F. Cuvier, 1825 -- valid -- Ground Squirrels, old world ground squirrels
  Spermophilus armatus Kennicott, 1863 -- invalid -- Uinta Ground Squirrel
  Spermophilus beecheyi (Richardson, 1829) -- invalid -- Ardillón de California, California Ground Squirrel
  Spermophilus beldingi Merriam, 1888 -- invalid -- Belding's Ground Squirrel
  Spermophilus brunneus (A. H. Howell, 1928) -- invalid -- northern Idaho ground squirrel, Idaho Ground Squirrel
  Spermophilus columbianus (Ord, 1815) -- invalid -- Columbian Ground Squirrel
  Spermophilus elegans Kennicott, 1863 -- invalid -- Wyoming Ground Squirrel
  Spermophilus franklinii (Sabine, 1822) -- invalid -- Franklin's Ground Squirrel
  Spermophilus lateralis (Say, 1823) -- invalid -- Golden-mantled Ground Squirrel
  Spermophilus mexicanus (Erxleben, 1777) -- invalid -- Ardillón mexicano, Mexican Ground Squirrel
  Spermophilus mohavensis Merriam, 1889 -- invalid -- Mohave Ground Squirrel
  Spermophilus parryii (Richardson, 1825) -- invalid -- Arctic Ground Squirrel
  Spermophilus richardsonii (Sabine, 1822) -- invalid -- Richardson's Ground Squirrel
  Spermophilus saturatus (Rhoads, 1895) -- invalid -- Cascade Golden-mantled 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 townsendii Bachman, 1839 -- invalid -- Townsend's Ground Squirrel
  Spermophilus tridecemlineatus (Mitchill, 1821) -- invalid -- Thirteen-lined Ground Squirrel
  Spermophilus variegatus (Erxleben, 1777) -- invalid -- Ardillón de roca, Rock Squirrel
  Spermophilus washingtoni (A. H. Howell, 1938) -- invalid -- Washington Ground Squirrel
  Sphaerodactylus Wagler, 1830 -- valid -- Dwarf Geckos
  Sphaerodactylus argus Gosse, 1850 -- valid -- Ocellated Dwarf Gecko, Ocellated Gekko, Ocellated Gecko, Geco-enano ocelado
  Sphaerodactylus beattyi Grant, 1937 -- valid -- Cotton Ginner Gecko
  Sphaerodactylus becki Schmidt, 1919 -- valid -- Navassa Dwarf Gecko, Navassa Island Dwarf Gecko
  Sphaerodactylus elegans Macleay, 1834 -- valid -- Ashy Gecko
  Sphaerodactylus gaigeae Grant, 1932 -- valid -- Gaige's Dwarf Gecko, Pandura's Gecko
  Sphaerodactylus klauberi Grant, 1931 -- valid -- Klauber's Dwarf Gecko
  Sphaerodactylus levinsi Heatwole, 1968 -- valid -- Desecheo Dwarf Gecko
  Sphaerodactylus macrolepis Günther, 1859 -- valid -- Common Dwarf Gecko
  Sphaerodactylus micropithecus Schwartz, 1977 -- valid -- Monito Dwarf Gecko, Monito Gecko
  Sphaerodactylus monensis Meerwarth, 1901 -- valid -- Mona Dwarf Gecko
  Sphaerodactylus nicholsi Grant, 1931 -- valid -- Nichols' Dwarf Gecko
  Sphaerodactylus notatus Baird, 1859 -- valid -- Reef Gecko
  Sphaerodactylus roosevelti Grant, 1931 -- valid -- Roosevelt's Dwarf Gecko
  Sphaerodactylus townsendi Grant, 1931 -- valid -- Townsend's Dwarf Gecko
  Sphenomorphus Fitzinger, 1843 -- valid -- Common Skinks
  Sphenomorphus scutatus (Peters, 1867) -- valid -- Palauan Skink
  Sphyrapicus S. F. Baird, 1858 -- valid -- Sapsuckers
  Sphyrapicus nuchalis S. F. Baird, 1858 -- valid -- Red-naped Sapsucker, Chupasavia nuca roja
  Sphyrapicus ruber (J. F. Gmelin, 1788) -- valid -- Red-breasted Sapsucker, Chupasavia cabeza roja
  Sphyrapicus thyroideus (Cassin, 1852) -- valid -- Williamson's Sapsucker, Chupasavia oscuro
  Sphyrapicus varius (Linnaeus, 1766) -- valid -- Chupasavia maculado, Yellow-bellied Sapsucker, pic maculé
  Spilogale Gray, 1865 -- valid -- spotted skunks
  Spilogale putorius (Linnaeus, 1758) -- valid -- Eastern Spotted Skunk, spotted skunk, Zorrillo-manchado común, Alleghanian Spotted Skunk
  Spindalis Jardine & Selby, 1837 -- valid -- Stripe-headed Tanagers
  Spindalis zena (Linnaeus, 1758) -- valid -- Zéna à tête rayée, Cigua cubana, Stripe-headed Tanager, Tángara cabeza rayada, Western Spindalis
  Spiza Bonaparte, 1824 -- valid -- Dickcissels
  Spiza americana (J. F. Gmelin, 1789) -- valid -- Arrocero americano, Dickcissel, dickcissel d'Amérique
  Spizella Bonaparte, 1832 -- valid -- Chipping Sparrows
  Spizella arborea (A. Wilson, 1810) -- invalid -- American Tree Sparrow, bruant hudsonien
  Spizella atrogularis (Cabanis, 1851) -- valid -- Bruant à menton noir, Chingolo barbinegro, Black-chinned Sparrow, Gorrión barba negra
  Spizella breweri Cassin, 1856 -- valid -- Bruant de Brewer, Chingolo de Brewer, Brewer's Sparrow, Gorrión de Brewer
  Spizella pallida (Swainson, 1832) -- valid -- Chingolo pálido, Gorrión pálido, Clay-colored Sparrow, bruant des plaines
  Spizella passerina (Bechstein, 1798) -- valid -- Chingolo cejiblanco, Chipping Sparrow, bruant familier, Gorrión ceja blanca
  Spizella pusilla (A. Wilson, 1810) -- valid -- Chingolo campestre, tico-tico-pequeno, Gorrión pusila, Field Sparrow, bruant des champs
  Spizella wortheni Ridgway, 1884 -- valid -- Bruant de Worthen, Chingolo de Worthen, Worthen's Sparrow, Gorrión de Worthen
  Sporophila Cabanis, 1844 -- valid -- Seedeaters
  Sporophila torqueola (Bonaparte, 1850) -- valid -- Sporophile à col blanc, Semillero torcaz, White-collared Seedeater, Semillero de collar, Cinnamon-rumped Seedeater
  Squamata Oppel, 1811 -- valid -- Amphisbaenians, Lizards, Snakes, amphisbènes, lézards, serpents
  Stelgidopteryx S. F. Baird, 1858 -- valid -- Rough-winged Swallows
  Stelgidopteryx serripennis (Audubon, 1838) -- valid -- Golondrina ala aserrada, Northern Rough-winged Swallow, hirondelle à ailes hérissées
  Stellula Gould, 1861 -- invalid -- Calliope Hummingbirds
  Stellula calliope (Gould, 1847) -- invalid -- Calliope Hummingbird, Colibrí garganta rayada
  Stenella Gray, 1866 -- valid -- spotted dolphins, spinner dolphins, striped dolphins
  Stenella attenuata (Gray, 1846) -- valid -- Pantropical Spotted Dolphin, Delfín moteado
  Stenella clymene (Gray, 1850) -- valid -- short-snouted spinner dolphin, Delfín de Clymen, Clymene Dolphin
  Stenella coeruleoalba (Meyen, 1833) -- valid -- Striped Dolphin, Delfín listado
  Stenella dubia (G. Cuvier, 1812) -- invalid
  Stenella fontolis (G. Cuvier, 1829) -- invalid
  Stenella longirostris (Gray, 1828) -- valid -- long-snouted spinner dolphin, Spinner Dolphin, Delfín tornillo
  Steno Gray, 1846 -- valid -- rough-toothed dolphins
  Steno bredanensis (G. Cuvier in Lesson, 1828) -- valid -- Rough-toothed Dolphin, Delfín dientes rugosos
  Stenoderma E. Geoffroy, 1818 -- valid -- red fruit-eating bats
  Stenoderma rufum Desmarest, 1820 -- valid -- Red Fig-eating Bat, Red Fruit Bat, Desmarest's Fig-eating Bat
  Stercorarius Brisson, 1760 -- valid -- Jaegers
  Stercorarius longicaudus Vieillot, 1819 -- valid -- Salteador cola larga, Long-tailed Jaeger, Labbe à longue queue, Págalo rabero, mandrião-de-cauda-comprida, moleiro-rabilongo, Long-tailed Skua
  Stercorarius parasiticus (Linnaeus, 1758) -- valid -- Salteador parásito, Parasitic Jaeger, Labbe parasite, Págalo parásito, mandrião-parasítico, moleiro-pequeno, Arctic Skua
  Stercorarius pomarinus (Temminck, 1815) -- valid -- Salteador pomarino, Pomarine Jaeger, Pomarine Skua, Labbe pomarin, Págalo pomarino, mandrião-pomarino, moleiro-do-árctico
  Sterna Linnaeus, 1758 -- valid -- Typical Terns
  Sterna albifrons Pallas, 1764 -- invalid -- Little Tern
  Sterna aleutica S. F. Baird, 1869 -- invalid -- Aleutian Tern
  Sterna anaethetus Scopoli, 1786 -- invalid -- Bridled Tern, Charrán embridado
  Sterna antillarum (R. Lesson, 1847) -- invalid -- Charrán mínimo, Least Tern
  Sterna bergii M. H. K. Lichtenstein, 1823 -- invalid -- Great Crested Tern, Swift Tern
  Sterna caspia Pallas, 1770 -- invalid -- Charrán caspia, Caspian Tern, sterne caspienne
  Sterna dougallii Montagu, 1813 -- valid -- Charrán rosado, Roseate Tern, Sterne de Dougall, trinta-réis-róseo, gaivina-rosada
  Sterna elegans Gambel, 1849 -- invalid -- Elegant Tern, Charrán elegante
  Sterna forsteri Nuttall, 1834 -- valid -- Charrán de Forster, Forster's Tern, Sterne de Forster, gaivina-de-forster
  Sterna fuscata Linnaeus, 1766 -- invalid -- Charrán sombrío, Sooty Tern
  Sterna hirundo Linnaeus, 1758 -- valid -- Charrán común, Common Tern, Sterne pierregarin, trinta-réis-boreal, gaivina
  Sterna lunata Peale, 1848 -- invalid -- Gray-backed Tern, Spectacled Tern
  Sterna maxima Boddaert, 1783 -- invalid -- Royal Tern, Charrán real
  Sterna nilotica J. F. Gmelin, 1789 -- invalid -- Gull-billed Tern, Charrán pico grueso
  Sterna paradisaea Pontoppidan, 1763 -- valid -- Charrán ártico, Arctic Tern, Sterne arctique, trinta-réis-ártico, gaivina-do-árctico
  Sterna sandvicensis Latham, 1787 -- invalid -- Charrán de Sandwich, Sandwich Tern
  Sterna striata J. F. Gmelin, 1789 -- valid -- Black-naped Tern, White-fronted Tern, Sterne tara, Charrán maorí, trinta-réis-de-fronte-branca
  Sternotherus Bell in Gray, 1825 -- valid -- Musk Turtles
  Sternotherus carinatus (Gray, 1856) -- valid -- Razor-backed Musk Turtle
  Sternotherus depressus Tinkle and Webb, 1955 -- valid -- Flattened Musk Turtle
  Sternotherus minor (Agassiz, 1857) -- valid -- Loggerhead Musk Turtle
  Sternotherus odoratus (Latreille in Sonnini and Latreille, 1801) -- valid -- Musk Turtle, Stinkpot, Common Musk Turtle, Eastern Musk Turtle
  Stilosoma Brown, 1890 -- invalid -- Short-tailed Snakes
  Stilosoma extenuatum Brown, 1890 -- invalid -- Short-tailed Snake
  Storeria Baird and Girard, 1853 -- valid -- Brown-bellied Snakes, Red-bellied Snakes, North American Brownsnakes
  Storeria dekayi (Holbrook, 1839) -- valid -- Dekay's Brown Snake, Dekay's Brownsnake, Culebra-parda de Kay, Brown Snake, couleuvre brune, Northern Brown Snake
  Storeria occipitomaculata (Storer, 1839) -- valid -- Red-bellied Snake, Redbelly Snake, couleuvre à ventre rouge
  Streptopelia Bonaparte, 1855 -- valid -- Turtle-Doves
  Streptopelia bitorquata (Temminck, 1809) -- valid -- Javanese Turtle-Dove, Island Collared Dove
  Streptopelia chinensis (Scopoli, 1786) -- invalid -- Spotted Dove
  Streptopelia risoria (Linnaeus, 1758) -- invalid -- Ringed Turtle-Dove, Barbary Dove
  Streptoprocne Oberholser, 1906 -- valid -- White-collared Swifts
  Streptoprocne zonaris (Shaw, 1796) -- valid -- White-collared Swift, Vencejo cuello blanco
  Strigidae -- valid -- Typical Owls, strigidés, Owls
  Strix Linnaeus, 1758 -- valid -- Earless Owls
  Strix nebulosa J. R. Forster, 1772 -- valid -- Great Gray Owl, chouette lapone, Great Grey Owl
  Strix varia Barton, 1799 -- valid -- Búho listado, Barred Owl, chouette rayée
  Sturnella Vieillot, 1816 -- valid -- Meadowlarks
  Sturnella magna (Linnaeus, 1758) -- valid -- Pradero tortilla-con-chile, Eastern Meadowlark, sturnelle des prés
  Sturnella neglecta Audubon, 1844 -- valid -- Western Meadowlark, sturnelle de l'ouest, Pradero occidental
  Sturnidae Rafinesque, 1815 -- valid -- étourneaux, Starlings
  Sturnus Linnaeus, 1758 -- valid -- Starlings
  Sturnus cineraceus Temminck, 1835 -- invalid -- White-cheeked Starling
  Sturnus philippensis (J. R. Forster, 1781) -- invalid -- Chestnut-cheeked Starling
  Sturnus vulgaris Linnaeus, 1758 -- valid -- Estornino pinto, European Starling, étourneau sansonnet, Common Starling
  Suidae Gray, 1821 -- valid -- hogs, pigs
  Sula Brisson, 1760 -- valid -- Boobies, Gannets
  Sula bassanus (Linnaeus, 1758) -- invalid -- Northern Gannet
  Sula dactylatra Lesson, 1831 -- valid -- Masked Booby, Bobo enmascarado, Fou masqué
  Sula leucogaster (Boddaert, 1783) -- valid -- Brown Booby, Bobo café, Fou brun
  Sula nebouxii Milne-Edwards, 1882 -- valid -- Blue-footed Booby, Bobo pata azul, Fou à pieds bleus
  Sula sula (Linnaeus, 1766) -- valid -- Red-footed Booby, Bobo pata roja, Fou à pieds rouges
  Sulidae Reichenbach, 1849 -- valid -- Boobies, Gannets
  Suncus Ehrenberg, 1832 -- valid -- white-toothed shrews
  Suncus murinus (Linnaeus, 1766) -- valid -- house shrew, Asian House Shrew
  Surnia Duméril, 1805 -- valid -- Hawk-Owls
  Surnia ulula (Linnaeus, 1758) -- valid -- Northern Hawk-Owl, Northern Hawk Owl, chouette épervière
  Sus Linnaeus, 1758 -- valid -- pigs
  Sus scrofa Linnaeus, 1758 -- valid -- wild boar, pig, pig (feral), Wild Boar
  Sylviidae Leach, 1820 -- valid -- fauvettes, gobe-mouches, Sylviid Babblers
  Sylvilagus Gray, 1867 -- valid -- Cottontails
  Sylvilagus aquaticus (Bachman, 1837) -- valid -- Swamp Rabbit, Swamper, Cane Cutter, Cane Jake
  Sylvilagus audubonii (Baird, 1858) -- valid -- Desert Cottontail, Audubon's Cottontail
  Sylvilagus bachmani (Waterhouse, 1839) -- valid -- Conejo matorralero, Brush Rabbit, Riparian Brush Rabbit
  Sylvilagus floridanus (J. A. Allen, 1890) -- valid -- Conejo serrano, lapin à queue blanche, Eastern Cottontail, Florida cottontail
  Sylvilagus idahoensis (Merriam, 1891) -- invalid -- Pygmy Rabbit
  Sylvilagus nuttallii (Bachman, 1837) -- valid -- Nuttall's cottontail, Mountain Cottontail
  Sylvilagus palustris (Bachman, 1837) -- valid -- Marsh Rabbit
  Sylvilagus transitionalis (Bangs, 1895) -- valid -- New England Cottontail, Coney, Wood Rabbit
  Synaptomys Baird, 1857 -- valid -- Bog Lemmings
  Synaptomys borealis (Richardson, 1828) -- valid -- campagnol-lemming boréale, Northern Bog Lemming
  Synaptomys cooperi Baird, 1857 -- valid -- campagnol-lemming de Cooper, Southern Bog Lemming
  Synthliboramphus J. F. Brandt, 1837 -- valid -- Ancient Murrelets
  Synthliboramphus antiquus (J. F. Gmelin, 1789) -- valid -- Mérgulo antiguo, Ancient Murrelet, Guillemot à cou blanc, torda-miúda-do-pacífico
  Synthliboramphus craveri (Salvadori, 1866) -- valid -- Craveri's Murrelet, Mérgulo de Craveri, Guillemot de Craveri, Mérgulo californiano alioscuro, mérgulo-de-asas-escuras
  Synthliboramphus hypoleucus (Xantus de Vesey, 1860) -- valid -- Xantus' Murrelet, Xantus' Murrelet, Xantus's Murrelet, Guillemot de Xantus, Guadalupe Murrelet, Mérgulo de la Guadalupe, mérgulo-de-asas-claras
  Syrrhophus Cope, 1878 -- invalid -- Chirping Frogs
  Syrrhophus cystignathoides (Cope, 1877) -- invalid -- Rio Grande Chirping Frog
  Syrrhophus guttilatus (Cope, 1879) -- invalid -- Spotted Chirping Frog
  Syrrhophus marnockii Cope, 1878 -- invalid -- Cliff Chirping Frog
  Tachornis Gosse, 1847 -- valid -- Palm Swifts
  Tachornis phoenicobia Gosse, 1847 -- valid -- Antillean Palm Swift, Antillean Palm-Swift
  Tachybaptus Reichenbach, 1853 -- valid -- Least Grebes
  Tachybaptus dominicus bangsi (van Rossem & Hachisuka, 1937) -- valid -- Least Grebe
  Tachycineta Cabanis, 1850 -- valid -- Tree Swallows
  Tachycineta bicolor (Vieillot, 1808) -- valid -- Golondrina bicolor, Tree Swallow, hirondelle bicolore
  Tachycineta cyaneoviridis (H. Bryant, 1859) -- valid -- Bahaman Swallow, Bahama Swallow
  Tachycineta thalassina (Swainson, 1827) -- valid -- Violet-green Swallow, Golondrina verdemar
  Tadarida Rafinesque, 1814 -- valid -- guano bats
  Tadarida brasiliensis (I. Geoffroy, 1824) -- valid -- Murciélago-cola suelta brasileño, Brazilian Free-tailed Bat, Mexican Free-tailed Bat
  Talpidae G. Fischer, 1814 -- valid -- desmans, moles, shrew-moles
  Tamias Illiger, 1811 -- valid -- Chipmunks
  Tamias alpinus Merriam, 1893 -- valid -- Alpine Chipmunk
  Tamias amoenus J. A. Allen, 1890 -- valid -- Yellow-pine Chipmunk
  Tamias canipes (V. Bailey, 1902) -- valid -- Gray-footed Chipmunk
  Tamias cinereicollis J. A. Allen, 1890 -- valid -- Gray-collared Chipmunk
  Tamias dorsalis Baird, 1855 -- valid -- Cliff Chipmunk
  Tamias merriami J. A. Allen, 1889 -- valid -- Merriam's Chipmunk
  Tamias minimus Bachman, 1839 -- valid -- tamia mineur, Least Chipmunk
  Tamias obscurus J. A. Allen, 1890 -- valid -- California Chipmunk, Dusky Chipmunk
  Tamias ochrogenys (Merriam, 1897) -- valid -- Yellow-cheeked Chipmunk, Redwood Chipmunk
  Tamias palmeri (Merriam, 1897) -- valid -- Palmer's Chipmunk
  Tamias panamintinus Merriam, 1893 -- valid -- Panamint Chipmunk
  Tamias quadrimaculatus Gray, 1867 -- valid -- Long-eared Chipmunk
  Tamias quadrivittatus (Say, 1823) -- valid -- Colorado Chipmunk
  Tamias ruficaudus (A. H. Howell, 1920) -- valid -- Red-tailed Chipmunk
  Tamias senex J. A. Allen, 1890 -- valid -- Allen's Chipmunk, Shadow Chipmunk
  Tamias siskiyou (A. H. Howell, 1922) -- valid -- Siskiyou Chipmunk
  Tamias sonomae (Grinnell, 1915) -- valid -- Sonoma Chipmunk
  Tamias speciosus Merriam, 1890 -- valid -- Lodgepole Chipmunk
  Tamias striatus (Linnaeus, 1758) -- valid -- tamia rayé, Eastern Chipmunk
  Tamias townsendii Bachman, 1839 -- valid -- Townsend's Chipmunk
  Tamias umbrinus J. A. Allen, 1890 -- valid -- Uinta Chipmunk
  Tamiasciurus Trouessart, 1880 -- valid -- chickarees, Red Squirrels
  Tamiasciurus douglasii (Bachman, 1839) -- valid -- Douglas's Squirrel
  Tamiasciurus hudsonicus (Erxleben, 1777) -- valid -- écureuil roux, Red Squirrel
  Tamiasciurus hudsonicus hudsonicus (Erxleben, 1777) -- valid
  Tantilla Baird and Girard, 1853 -- valid -- Black-headed Snakes, Crowned Snakes, Flat-headed Snakes
  Tantilla atriceps (Günther, 1895) -- valid -- Mexican Black-headed Snake, Culebra-encapuchada mexicana, Mexican Blackhead Snake
  Tantilla coronata Baird and Girard, 1853 -- valid -- Southeastern Crowned Snake
  Tantilla gracilis Baird and Girard, 1853 -- valid -- Flat-headed Snake, Culebra-ciempiés cabeza plana, Flathead Snake
  Tantilla hobartsmithi Taylor, 1936 -- valid -- Southwestern Black-headed Snake, Culebra-encapuchada del Suroeste, Southwestern Blackhead Snake, Smith's Black-headed Snake
  Tantilla nigriceps Kennicott, 1860 -- valid -- Plains Black-headed Snake, Culebra-encapuchada de pradera, Plains Blackhead Snake
  Tantilla oolitica Telford, 1966 -- valid -- Rim Rock Crowned Snake
  Tantilla planiceps (Blainville, 1835) -- valid -- California Black-headed Snake, Western Black-headed Snake, Culebra-encapuchada californiana, Western Blackhead Snake
  Tantilla relicta Telford, 1966 -- valid -- Florida Crowned Snake
  Tantilla rubra Cope, 1875 -- valid -- Reddish Black-headed Snake, Culebra-encapuchada roja, Red Black-headed Snake
  Tantilla wilcoxi Stejneger, 1902 -- valid -- Chihuahuan Black-headed Snake, Culebra-encapuchada chihuahuense, Chihuahuan Blackhead Snake
  Tantilla yaquia H. M. Smith, 1942 -- valid -- Yaqui Black-headed Snake, Culebra-encapuchada yaqui, Yaquia Blackhead Snake
  Taricha Gray, 1850 -- valid -- Pacific Newts
  Taricha granulosa (Skilton, 1849) -- valid -- Rough-skinned Newt
  Taricha rivularis (Twitty, 1935) -- valid -- Red-bellied Newt
  Taricha torosa (Rathke, 1833) -- valid -- California Newt
  Tarsiger Hodgson, 1845 -- valid -- Bluetails
  Tarsiger cyanurus (Pallas, 1773) -- valid -- Red-flanked Bluetail
  Tasmacetus Oliver, 1937 -- valid -- Tasmanian beaked whales
  Tasmacetus shepherdi Oliver, 1937 -- valid -- Tasmanian beaked whale, Tasman beaked whale, Shepherd's Beaked Whale
  Taxidea Waterhouse, 1839 -- valid -- American badgers
  Taxidea taxus (Schreber, 1777) -- valid -- American Badger, Badger, Tlalcoyote
  Tayassu G. Fischer [von Waldheim], 1814 -- valid -- peccaries
  Tayassu tajacu (Linnaeus, 1758) -- invalid -- collared peccary, Pecari de collar
  Tayassuidae Palmer, 1897 -- valid -- peccaries
  Teiidae Gray, 1827 -- valid -- Tegus, Ground Lizards, New World Runners, Racerunners, Whiptails, Ameivas
  Telespiza S. B. Wilson, 1890 -- valid -- Laysan Finches
  Telespyza cantans S. B. Wilson, 1890 -- invalid
  Telespyza ultima Bryan, 1917 -- invalid
  Terrapene Merrem, 1820 -- valid -- Box Turtles, American Box Turtles
  Terrapene carolina (Linnaeus, 1758) -- valid -- Tortuga de Carolina, tortue tabatière, Eastern Box Turtle, Common Box Turtle
  Testudines Linnaeus, 1758 -- invalid -- terrapins, tortoises, tortues, Turtles
  Testudinidae Batsch, 1788 -- valid -- Tortoises
  Tetraoninae -- invalid -- Grouse
  Thamnophis Fitzinger, 1843 -- valid -- Garter Snakes, Ribbon Snakes, North American Gartersnakes
  Thamnophis brachystoma (Cope, 1892) -- valid -- Short-headed Garter Snake, Shorthead Garter Snake, Short-headed Gartersnake
  Thamnophis cyrtopsis (Kennicott, 1860) -- valid -- Black-necked Garter Snake, Culebra-listonada cuello negro, Blackneck Garter Snake, Black-necked Gartersnake
  Thamnophis elegans (Baird and Girard, 1853) -- valid -- Western Terrestrial Garter Snake, Culebra-listonada elegante, Terrestrial Garter Snake
  Thamnophis eques (Reuss, 1834) -- valid -- Mexican Garter Snake, Culebra-listonada del sur-mexicano, Mexican Gartersnake
  Thamnophis marcianus (Baird and Girard, 1853) -- valid -- Checkered Garter Snake, Culebra-listonada manchada, Checkered Gartersnake
  Thamnophis ordinoides (Baird and Girard, 1852) -- valid -- Northwestern Garter Snake, Puget Sound Garter Snake, Northwestern Gartersnake
  Thamnophis proximus (Say in James, 1823) -- valid -- Western Ribbon Snake, Culebra-listonada occidental, Western Ribbonsnake
  Thamnophis radix (Baird and Girard, 1853) -- valid -- Plains Garter Snake, Plains Gartersnake, Eastern Plains Garter Snake
  Thamnophis rufipunctatus (Cope, 1875) -- valid -- Culebra-de agua cabeza angosta, Narrow-headed Garter Snake, Narrowhead Garter Snake, Narrowhead Watersnake, Narrow-headed Gartersnake
  Thamnophis sauritus (Linnaeus, 1766) -- invalid -- Eastern Ribbon Snake, Eastern Ribbonsnake
  Thamnophis sirtalis (Linnaeus, 1758) -- valid -- Common Garter Snake, couleuvre rayée, Culebra-listonada común, Common Gartersnake
  Thecadactylus Cuvier, 1820 -- valid -- Turnip-tailed Geckos
  Thecadactylus rapicauda (Houttuyn, 1782) -- valid -- Turnip-tailed Gecko
  Thomomys Wied-Neuwied, 1839 -- valid -- Smooth-toothed Pocket Gophers, Western Pocket Gophers
  Thomomys bottae (Eydoux and Gervais, 1836) -- valid -- Tuza de Botta, Botta's Pocket Gopher
  Thomomys bulbivorus (Richardson, 1829) -- valid -- Camas Pocket Gopher
  Thomomys clusius Coues, 1875 -- valid -- Wyoming Pocket Gopher
  Thomomys idahoensis Merriam, 1901 -- valid -- Idaho Pocket Gopher
  Thomomys mazama Merriam, 1897 -- valid -- Western Pocket Gopher
  Thomomys monticola J. A. Allen, 1893 -- valid -- Mountain Pocket Gopher
  Thomomys talpoides (Richardson, 1828) -- valid -- Northern Pocket Gopher
  Thomomys townsendii (Bachman, 1839) -- valid -- Townsend's Pocket Gopher
  Thomomys umbrinus (Richardson, 1829) -- valid -- Tuza mexicana, Southern Pocket Gopher
  Thraupidae -- valid -- Tanagers
  Threskiornithidae Poche, 1904 -- valid -- Ibises, Spoonbills
  Thryomanes P. L. Sclater, 1862 -- valid -- Bewick's Wrens
  Thryomanes bewickii (Audubon, 1827) -- valid -- Chivirín cola oscura, Bewick's Wren
  Thryothorus Vieillot, 1816 -- valid -- Wrens
  Thryothorus ludovicianus (Latham, 1790) -- valid -- Chivirín de Carolina, Carolina Wren, troglodyte de Caroline
  Tiaris Swainson, 1827 -- valid -- Grassquits
  Tiaris bicolor (Linnaeus, 1766) -- invalid -- Black-faced Grassquit
  Tiaris olivacea (Linnaeus, 1766) -- invalid -- Yellow-faced Grassquit, Semillero oliváceo
  Todidae -- valid -- Todies
  Todus Brisson, 1760 -- valid -- Todies
  Todus mexicanus R. Lesson, 1838 -- valid -- todi-de-porto-rico, Barrancolí puertorriqueño, Todier de Porto Rico, Puerto Rican Tody
  Toxostoma Wagler, 1831 -- valid -- American Thrashers
  Toxostoma bendirei (Coues, 1873) -- valid -- Bendire's Thrasher, Cuitlacoche pico corto
  Toxostoma crissale Henry, 1858 -- valid -- Crissal Thrasher, Cuitlacoche crisal
  Toxostoma curvirostre (Swainson, 1827) -- valid -- Curve-billed Thrasher, Cuitlacoche pico curvo
  Toxostoma lecontei Lawrence, 1851 -- valid -- Le Conte's Thrasher, Cuitlacoche pálido
  Toxostoma longirostre (Lafresnaye, 1838) -- valid -- Long-billed Thrasher, Cuitlacoche pico largo
  Toxostoma redivivum (Gambel, 1845) -- valid -- California Thrasher, Cuitlacoche californiano
  Toxostoma rufum (Linnaeus, 1758) -- valid -- Cuitlacoche rojizo, moqueur roux, Brown Thrasher
  Trachemys Agassiz, 1857 -- valid -- Sliders, slider turtles
  Trachemys scripta (Thunberg in Schoepff, 1792) -- valid -- slider, tortue à oreilles rouges, Tortuga gravada, Pond Slider, Common Slider
  Trachemys stejnergeri (Schmidt, 1928) -- invalid
  Trichechidae Gill, 1872 -- valid -- manatees
  Trichechus Linnaeus, 1758 -- valid -- manatees
  Trichechus manatus Linnaeus, 1758 -- valid -- West Indian Manatee, manatee, Manatí del Caribe, Caribbean manatee
  Trichoglossus Stephens, 1826 -- valid -- Island Lories
  Trichoglossus rubiginosus (Bonaparte, 1850) -- valid -- Pohnpei Lorikeet, Ponape Lory
  Trimorphodon Cope, 1861 -- valid -- Lyre Snakes, Lyresnakes
  Trimorphodon biscutatus (A. M. C. Duméril, Bibron and A. H. A. Duméril, 1854) -- valid -- Western Lyre Snake, Culebra-lira cabeza negra, Costal Lyre Snake
  Tringa Linnaeus, 1758 -- valid -- Redshanks
  Tringa erythropus (Pallas, 1764) -- valid -- Spotted Redshank, Chevalier arlequin, Archibebe oscuro, perna-vermelha-bastardo
  Tringa flavipes (J. F. Gmelin, 1789) -- valid -- Patamarilla menor, Lesser Yellowlegs, Petit Chevalier, Archibebe patigualdo chico, maçarico-de-perna-amarela, perna-amarela-pequeno
  Tringa glareola Linnaeus, 1758 -- valid -- Wood Sandpiper, Chevalier sylvain, Andarríos bastardo, maçarico-de-dorso-malhado
  Tringa melanoleuca (J. F. Gmelin, 1789) -- valid -- Patamarilla mayor, Greater Yellowlegs, Grand Chevalier, Archibebe patigualdo grande, maçarico-grande-de-perna-amarela, perna-amarela-grande
  Tringa nebularia (Gunnerus, 1767) -- valid -- Common Greenshank, Chevalier aboyeur, Archibebe claro, perna-verde
  Tringa ochropus Linnaeus, 1758 -- valid -- Green Sandpiper, Chevalier cul-blanc, Andarríos grande, maçarico-bique-bique
  Tringa solitaria A. Wilson, 1813 -- valid -- Playero solitario, Solitary Sandpiper, Chevalier solitaire, Andarríos solitario, maçarico-solitário
  Tringa stagnatilis (Bechstein, 1803) -- valid -- Marsh Sandpiper, Chevalier stagnatile, Archibebe fino, perna-verde-fino
  Trionychidae Gray, 1825 -- valid -- Softshell Turtles
  Trionyx sinensis Wiegmann, 1835 -- invalid
  Trionyx steindachneri Siebenrock, 1906 -- invalid -- Wattle-necked Softshell Turtle
  Trochilidae -- valid -- Hummingbirds, oiseaux-mouches
  Troglodytes Vieillot, 1809 -- valid -- Wrens
  Troglodytes aedon Vieillot, 1809 -- valid -- Chivirín saltapared, House Wren, troglodyte familier
  Troglodytes troglodytes (Linnaeus, 1758) -- valid -- Chivirín chochín, Winter Wren, troglodyte mignon
  Troglodytidae Swainson, 1832 -- valid -- Wrens
  Trogon Brisson, 1760 -- valid -- Trogons
  Trogon elegans Gould, 1834 -- valid -- Trogon élégant, Elegant Trogon, Trogón elegante
  Trogonidae -- valid -- Trogons
  Trogoniformes -- valid -- Trogons
  Tropidoclonion Cope, 1860 -- valid -- Lined Snakes
  Tropidoclonion lineatum (Hallowell, 1856) -- valid -- Lined Snake
  Tropidophis Bibron in Ramon de la Sagra, 1840 -- valid -- Dwarf Boas
  Tropidophis melanurus (Schlegel, 1837) -- valid -- Dusky Dwarf Boa, Giant Trope, Wood Snake
  Tryngites Cabanis, 1857 -- invalid -- Buff-breasted Sandpipers
  Tryngites subruficollis (Vieillot, 1819) -- invalid -- Playero leonado, Buff-breasted Sandpiper, Bécasseau roussâtre
  Turdus Linnaeus, 1758 -- valid -- Robins
  Turdus grayi Bonaparte, 1838 -- valid -- Clay-colored Robin, Mirlo pardo, Clay-colored Thrush
  Turdus iliacus Linnaeus, 1758 -- valid
  Turdus merula Linnaeus, 1758 -- valid -- Eurasian Blackbird, merle noir, Common Blackbird
  Turdus migratorius Linnaeus, 1766 -- valid -- Mirlo primavera, American Robin, merle d'Amérique
  Turdus naumanni Temminck, 1820 -- valid -- Dusky Thrush, Naumann's Thrush
  Turdus obscurus Gmelin, 1789 -- valid -- Eyebrowed Thrush
  Turdus pilaris Linnaeus, 1758 -- valid -- Fieldfare, grive litorne
  Turdus plumbeus Linnaeus, 1758 -- valid -- Red-legged Thrush
  Turdus rufopalliatus Lafresnaye, 1840 -- valid -- Rufous-backed Robin, Mirlo dorso rufo
  Tursiops Gervais, 1855 -- valid -- bottlenose dolphins
  Tursiops truncatus (Montagu, 1821) -- valid -- Bottlenose Dolphin, Bottlenosed Dolphin, Delfín tonina, common bottlenose dolphin
  Tympanuchus Gloger, 1841 -- valid -- Sharp-tailed Grouse, Prairie-Chickens
  Tympanuchus cupido (Linnaeus, 1758) -- valid -- Tétras des prairies, Gallo de las praderas grande, galo-das-pradarias-grande, Greater Prairie-Chicken, Greater Prairie Chicken
  Tympanuchus pallidicinctus (Ridgway, 1873) -- valid -- Tétras pâle, Gallo de las praderas chico, galo-das-pradarias-pequeno, Lesser Prairie-Chicken, Lesser Prairie Chicken
  Tympanuchus phasianellus (Linnaeus, 1758) -- valid -- Gallo de las praderas rabudo, tetraz-de-rabo-fino, Sharp-tailed Grouse, tétras à queue fine
  Typhlomolge Stejneger, 1896 -- invalid -- Texas Blind Salamanders
  Typhlomolge rathbuni Stejneger, 1896 -- invalid -- Texas Blind Salamander
  Typhlomolge robusta Longley, 1978 -- invalid -- Robust Blind Salamander, Blanco Blind Salamander
  Typhlopidae Merrem, 1820 -- valid -- Blind Snakes, Typical Blind Snakes, Blindsnakes
  Typhlops Oppel, 1811 -- valid -- Blind Snakes, Blindsnakes
  Typhlops granti Ruthven and Gaige, 1935 -- invalid -- Grant's Blind Snake, Grant's Blindsnake
  Typhlops monensis Schmidt, 1926 -- invalid -- Mona Blind Snake, Mona Blindsnake
  Typhlops richardii A. M. C. Duméril and Bibron, 1844 -- invalid -- Richard's Blind Snake, Richard's Blindsnake
  Typhlops rostellatus Stejneger, 1904 -- valid -- Puerto Rican Wetland Blind Snake, Puerto Rican Wetland Blindsnake, Puerto Rican Worm Snake
  Typhlops sulcatus Cope, 1868 -- valid -- Sulcate Blind Snake, Sulcate Blindsnake, Island Worm Snake
  Tyrannidae -- valid -- Tyrant Flycatchers, tyrans gobe-mouches
  Tyrannus Lacepede, 1799 -- valid -- Kingbirds
  Tyrannus caudifasciatus Orbigny, 1839 -- valid -- Loggerhead Kingbird
  Tyrannus couchii S. F. Baird, 1858 -- valid -- Couch's Kingbird, Tirano silbador
  Tyrannus crassirostris Swainson, 1826 -- valid -- Thick-billed Kingbird, Tirano pico grueso
  Tyrannus dominicensis (Gmelin, 1788) -- valid -- Gray Kingbird, Tirano gris, Grey Kingbird
  Tyrannus forficatus (Gmelin, 1789) -- valid -- Tirano-tijereta rosado, Scissor-tailed Flycatcher, tyran à longue queue
  Tyrannus melancholicus Vieillot, 1819 -- valid -- Tirano tropical, Tropical Kingbird
  Tyrannus savana Vieillot, 1808 -- valid -- Tirano-tijereta gris, Fork-tailed Flycatcher, tyran des savanes
  Tyrannus tyrannus (Linnaeus, 1758) -- valid -- Tirano dorso negro, Eastern Kingbird, tyran tritri
  Tyrannus verticalis Say, 1823 -- valid -- Tirano pálido, Western Kingbird, tyran de l'ouest
  Tyrannus vociferans Swainson, 1826 -- valid -- Cassin's Kingbird, Tirano gritón
  Tyto Billberg, 1828 -- valid -- Barn-Owls
  Tyto alba (Scopoli, 1769) -- valid -- Common Barn-Owl, Lechuza de campanario, Barn Owl, effraie de clochers, Western Barn Owl
  Tytonidae -- valid -- Barn-Owls
  Uma Baird, 1859 -- valid -- Fringe-toed Lizards
  Uma inornata Cope, 1895 -- valid -- Coachella Valley Fringe-toed Lizard
  Uma notata Baird, 1859 -- valid -- Colorado Desert Fringe-toed Lizard, Lagartija-arenera del Colorado
  Uma scoparia Cope, 1894 -- valid -- Mojave Fringe-toed Lizard
  Upupa Linnaeus, 1758 -- valid -- Hoopoes
  Upupa epops Linnaeus, 1758 -- valid -- poupa, poupa-eurasiática, Abubilla común, Huppe fasciée, Hoopoe, Common Hoopoe, Eurasian Hoopoe
  Upupidae -- valid -- Hoopoes
  Uraeginthus Cabanis, 1851 -- valid -- Cordonbleus
  Uraeginthus bengalus (Linnaeus, 1766) -- valid -- Red-cheeked Cordonbleu, Red-cheeked Cordon-bleu
  Uria Brisson, 1760 -- valid -- Murres
  Uria aalge (Pontoppidan, 1763) -- valid -- Arao común, Common Murre, Guillemot marmette, airo, Common Guillemot
  Uria lomvia (Linnaeus, 1758) -- valid -- Thick-billed Murre, Guillemot de Brünnich, Arao de Brünnich, airo-de-freio, Brunnich's Guillemot
  Urocyon Baird, 1857 -- valid -- gray foxes
  Urocyon cinereoargenteus (Schreber, 1775) -- valid -- Gray Fox, Zorra gris, Common Gray Fox, renard gris
  Urocyon littoralis (Baird, 1858) -- valid -- Island Fox, Island Gray Fox, Channel Islands Gray Fox
  Urodynamis Salvadori, 1880 -- valid -- Long-tailed Cuckoos
  Urodynamis taitensis (Sparrman, 1787) -- valid -- Long-tailed Cuckoo
  Urosaurus Hallowell, 1854 -- valid -- Tree Lizards, Brush Lizards
  Urosaurus graciosus Hallowell, 1854 -- valid -- Long-tailed Brush Lizard, Lagartija-arbolera cola larga
  Urosaurus microscutatus (Van Denburgh, 1894) -- invalid -- Small-scaled Lizard, Lagartija-arbolera escamas chicas
  Urosaurus ornatus (Baird in Baird and Girard, 1852) -- valid -- Tree Lizard, Ornate Tree Lizard, Lagartija-arbolera común
  Ursidae Fischer de Waldheim, 1817 -- valid -- bears
  Ursus Linnaeus, 1758 -- valid -- bears
  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
  Ursus maritimus Phipps, 1774 -- valid -- White Bear, Polar Bear, ours blanc
  Uta Baird and Girard in Stansbury, 1852 -- valid -- Side-blotched Lizards
  Uta stansburiana Baird and Girard, 1852 -- valid -- Side-blotched Lizard, Common Side-blotched Lizard, Lagartija-costado manchado común
  Vanellus Brisson, 1760 -- valid -- Lapwings
  Vanellus vanellus (Linnaeus, 1758) -- valid -- Northern Lapwing, Vanneau huppé, Avefría europea, abibe
  Varanidae -- valid -- Monitors, Monitor Lizards
  Varanus Merrem, 1820 -- valid -- Monitor Lizards
  Varanus indicus (Daudin, 1802) -- valid -- Indian Monitor Lizard, Indian Monitor, Mangrove Monitor
  Varanus salvator (Laurenti, 1768) -- valid -- Common Water Monitor
  Vermivora Swainson, 1827 -- valid -- Vermivoras
  Vermivora bachmanii (Audubon, 1833) -- valid -- Bachman's Warbler, Bachman's Wood Warbler, Paruline de Bachman
  Vermivora celata (Say, 1822) -- invalid -- Chipe corona naranja, Orange-crowned Warbler, paruline verdâtre
  Vermivora chrysoptera (Linnaeus, 1766) -- valid -- Chipe ala dorada, Paruline à ailes dorées, Golden-winged Warbler
  Vermivora crissalis (Salvin & Godman, 1889) -- invalid -- Colima Warbler, Chipe crisal
  Vermivora luciae (J. G. Cooper, 1861) -- invalid -- Lucy's Warbler, Chipe rabadilla rufa
  Vermivora peregrina (A. Wilson, 1811) -- invalid -- Chipe peregrino, Tennessee Warbler, paruline obscure
  Vermivora 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
  Vespertilionidae Gray, 1821 -- valid -- vesper bats, vespertilionid bats, evening bats
  Vestiaria Jarocki, 1821 -- valid -- 'I'iwis
  Vestiaria coccinea (G. Forster, 1780) -- valid -- 'I'iwi, Iiwi
  Vidua Cuvier, 1816 -- valid -- Indigo-birds, Whydahs
  Vidua macroura (Pallas, 1764) -- valid -- Pin-tailed Whydah
  Vini Lesson, 1833 -- valid -- Vini Lories
  Vini australis (Gmelin, 1788) -- valid -- Blue-crowned Lorikeet, Blue-crowned Lory
  Viperidae Oppel, 1811 -- valid -- Pit Vipers, Vipers
  Vireo Vieillot, 1808 -- valid -- Vireos
  Vireo altiloquus (Vieillot, 1808) -- valid -- Black-whiskered Vireo, Vireo bigotudo
  Vireo atricapilla Woodhouse, 1852 -- valid -- black-capped vireo, Vireo gorra negra
  Vireo bellii Audubon, 1844 -- valid -- Bell's Vireo, Vireo de Bell
  Vireo crassirostris (H. Bryant, 1859) -- valid -- Thick-billed Vireo
  Vireo flavifrons Vieillot, 1808 -- valid -- Vireo garganta amarilla, Yellow-throated Vireo, viréo à gorge jaune
  Vireo gilvus (Vieillot, 1808) -- valid -- Vireo gorjeador, Warbling Vireo, viréo mélodieux
  Vireo griseus (Boddaert, 1783) -- valid -- Vireo ojo blanco, White-eyed Vireo, viréo aux yeux blancs
  Vireo huttoni Cassin, 1851 -- valid -- Hutton's Vireo, Vireo reyezuelo
  Vireo latimeri S. F. Baird, 1866 -- valid -- Puerto Rican Vireo
  Vireo olivaceus (Linnaeus, 1766) -- valid -- Vireo ojo rojo, Red-eyed Vireo, viréo aux yeux rouges
  Vireo philadelphicus (Cassin, 1851) -- valid -- Vireo de Filadelfia, Philadelphia Vireo, viréo de Philadelphie
  Vireo solitarius (A. Wilson, 1810) -- valid -- Solitary Vireo, Vireo anteojillo, Blue-headed Vireo, viréo à tête bleue
  Vireo vicinior Coues, 1866 -- valid -- Gray Vireo, Vireo gris, Grey Vireo
  Vireonidae -- valid -- Greenlets, Vireos
  Virginia Baird and Girard, 1853 -- invalid -- Earth Snakes, Earthsnakes, Smooth Earthsnakes
  Virginia striatula (Linnaeus, 1766) -- invalid -- Rough Earth Snake, Rough Earthsnake
  Virginia valeriae Baird and Girard, 1853 -- invalid -- Smooth Earth Snake, Smooth Earthsnake
  Vulpes Frisch, 1775 -- valid -- kit foxes, red foxes
  Vulpes macrotis Merriam, 1888 -- valid -- Kit Fox
  Vulpes velox (Say, 1823) -- valid -- Swift Fox, Zorra desértica
  Vulpes velox velox (Say, 1823) -- invalid -- swift fox
  Vulpes vulpes (Linnaeus, 1758) -- valid -- Red Fox, renard roux
  Wilsonia Bonaparte, 1838 -- invalid -- Hooded Warblers
  Wilsonia canadensis (Linnaeus, 1766) -- invalid -- Chipe de collar, Canada Warbler, paruline du Canada
  Wilsonia citrina (Boddaert, 1783) -- invalid -- Chipe encapuchado, Hooded Warbler, paruline à capuchon
  Wilsonia pusilla (A. Wilson, 1811) -- invalid -- Chipe corona negra, Wilson's Warbler, paruline à calotte noire
  Xanthocephalus Bonaparte, 1850 -- valid -- Yellow-headed Blackbirds
  Xanthocephalus xanthocephalus (Bonaparte, 1826) -- valid -- Yellow-headed Blackbird, Yellow-headed Blackbird, carouge à tête jaune
  Xantusia Baird, 1859 -- valid -- night lizards
  Xantusia henshawi Stejneger, 1893 -- valid -- Granite Night Lizard, Henshaw's Night Lizard, Lagartija-escofina de granito
  Xantusia riversiana Cope, 1883 -- valid -- Island Night Lizard
  Xantusia vigilis Baird, 1859 -- valid -- Desert Night Lizard, Lagartija-escofina de desierto
  Xantusiidae -- valid -- night lizards
  Xenus Kaup, 1829 -- valid -- Terek Sandpipers
  Xenus cinereus (Güldenstädt, 1775) -- valid -- Terek Sandpiper, Chevalier bargette, Andarríos del Terek, maçarico-tereque
  Zalophus Gill, 1866 -- valid -- California sea lions
  Zapus Coues, 1875 -- valid -- Jumping Mice
  Zapus hudsonius (Zimmermann, 1780) -- valid -- souris sauteuse des champs, Meadow Jumping Mouse
  Zapus princeps J. A. Allen, 1893 -- valid -- Western Jumping Mouse
  Zapus trinotatus Rhoads, 1895 -- valid -- Pacific Jumping Mouse
  Zenaida Bonaparte, 1838 -- valid -- Zenaida Doves
  Zenaida asiatica (Linnaeus, 1758) -- valid -- Paloma ala blanca, White-winged Dove, tourterelle à ailes blanches
  Zenaida aurita (Temminck, 1809) -- valid -- Zenaida Dove, Paloma aurita
  Zenaida macroura (Linnaeus, 1758) -- valid -- Paloma huilota, Mourning Dove, tourterelle triste
  Ziphiidae Gray, 1850 -- invalid -- beaked whales
  Ziphius G. Cuvier, 1823 -- valid -- goose-beaked whales
  Ziphius cavirostris G. Cuvier, 1823 -- valid -- goose-beaked whale, Cuvier's Beaked Whale, goosebeak whale, Ballena-picuda de Couvier
  Zonotrichia Swainson, 1832 -- valid -- Crowned Sparrows
  Zonotrichia albicollis (J. F. Gmelin, 1789) -- valid -- Chingolo gorjiblanco, chingolito, Gorrión garganta blanca, White-throated Sparrow, bruant à gorge blanche
  Zonotrichia atricapilla (J. F. Gmelin, 1789) -- valid -- Bruant à couronne dorée, Chingolo coronidorado, tico-tico-coroa-dourada, Golden-crowned Sparrow, Gorrión corona dorada
  Zonotrichia leucophrys (J. R. Forster, 1772) -- valid -- Chingolo coroniblanco, tico-tico-coroado, White-crowned Sparrow, bruant à couronne blanche, Gorrión corona blanca
  Zonotrichia querula (Nuttall, 1840) -- valid -- Chingolo de Harris, Harris' Sparrow, Harris's Sparrow, bruant à face noire
  Zosteropidae Bonaparte, 1853 -- valid -- White-eyes
  Zosterops Vigors & Horsfield, 1827 -- valid -- Lesser White-eyes
  Zosterops cinereus (Kittlitz, 1832) -- valid -- Dusky White-eye, Grey-brown White-eye
  Zosterops conspicillatus (Kittlitz, 1833) -- valid -- Bridled White-eye
  Zosterops japonicus Temminck & Schlegel, 1845 -- valid -- Japanese White-eye
   

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