| Albatross, Black-footed | Phoebastria nigripes | Albatross, Black-footed |
| Albatross, Laysan | Phoebastria immutabilis | Albatross, Laysan |
| Albatross, Short-tailed | Phoebastria albatrus | Albatross, Short-tailed |
| Anhinga | Anhinga anhinga | Anhinga |
| Auklet, Cassin's | Ptychoramphus aleuticus | Auklet, Cassin's |
| Auklet, Parakeet | Aethia psittacula | Auklet, Parakeet |
| Auklet, Rhinoceros | Cerorhinca monocerata | Auklet, Rhinoceros |
| Avocet, American | Recurvirostra americana | Avocet, American |
| Bishop, Orange | Euplectes franciscanus | Bishop, Orange |
| Bittern, American | Botaurus lentiginosus | Bittern, American |
| Bittern, Least | Ixobrychus exilis | Bittern, Least |
| Blackbird, Brewer's | Euphagus cyanocephalus | Blackbird, Brewer's |
| Blackbird, Red-winged | Agelaius phoeniceus | Blackbird, Red-winged |
| Blackbird, Rusty | Euphagus carolinus | Blackbird, Rusty |
| Blackbird, Tricolored | Agelaius tricolor | Blackbird, Tricolored |
| Blackbird, Yellow-headed | Xanthocephalus xanthocephalus | Blackbird, Yellow-headed |
| Bluebird, Mountain | Sialia currucoides | Bluebird, Mountain |
| Bluebird, Western | Sialia mexicana | Bluebird, Western |
| Bobolink | Dolichonyx oryzivorus | Bobolink |
| Booby, Blue-footed | Sula nebouxii | Booby, Blue-footed |
| Booby, Brown | Sula leucogaster | Booby, Brown |
| Booby, Masked | Sula dactylatra | Booby, Masked |
| Booby, Nazca | Sula granti | Booby, Nazca |
| Booby, Red-footed | Sula sula | Booby, Red-footed |
| Brant | Branta bernicla | Brant |
| Budgerigar | Melopsittacus undulatus | Budgerigar |
| Bufflehead | Bucephala albeola | Bufflehead |
| Bunting, Indigo | Passerina cyanea | Bunting, Indigo |
| Bunting, Lark | Calamospiza melanocorys | Bunting, Lark |
| Bunting, Lazuli | Passerina amoena | Bunting, Lazuli |
| Bunting, Little | Emberiza pusilla | Bunting, Little |
| Bunting, Painted | Passerina ciris | Bunting, Painted |
| Bushtit | Psaltriparus minimus | Bushtit |
| Canvasback | Aythya valisineria | Canvasback |
| Caracara, Crested | Caracara cheriway | Caracara, Crested |
| Cardinal, Red | Cardinalis cardinalis | Cardinal, Red |
| Catbird, Gray | Dumetella carolinensis | Catbird, Gray |
| Chat, Yellow-breasted | Icteria virens | Chat, Yellow-breasted |
| Chickadee, Mountain | Poecile gambeli | Chickadee, Mountain |
| Cockatiel | Nymphicus hollandicus | Cockatiel |
| Condor, California | Gymnogyps californianus | Condor, California |
| Coot, American | Fulica americana | Coot, American |
| Cormorant, Brandt's | Phalacrocorax penicillatus | Cormorant, Brandt's |
| Cormorant, Double-crested | Phalacrocorax auritus | Cormorant, Double-crested |
| Cormorant, Pelagic | Phalacrocorax pelagicus | Cormorant, Pelagic |
| Cowbird, Bronzed | Molothrus aeneus | Cowbird, Bronzed |
| Cowbird, Brown-headed | Molothrus ater | Cowbird, Brown-headed |
| Crane, Sandhill | Grus canadensis | Crane, Sandhill |
| Creeper, Brown | Certhia americana | Creeper, Brown |
| Crossbill, Red | Loxia curvirostra | Crossbill, Red |
| Crow, American | Corvus brachyrhynchos | Crow, American |
| Cuckoo, Yellow-billed | Coccyzus americanus | Cuckoo, Yellow-billed |
| Curlew, Long-billed | Numenius americanus | Curlew, Long-billed |
| Darter | Anhinga melanogaster | Darter |
| Dickcissel | Spiza americana | Dickcissel |
| Dipper, American | Cinclus mexicanus | Dipper, American |
| Dove, Common Ground | Columbina passerina | Dove, Common Ground |
| Dove, Eurasian Collared | Streptopelia decaocto | Dove, Eurasian Collared |
| Dove, Inca | Columbina inca | Dove, Inca |
| Dove, Mourning | Zenaida macroura | Dove, Mourning |
| Dove, Ringed Turtle | Streptopelia risoria | Dove, Ringed Turtle |
| Dove, Ruddy Ground | Columbina talpacoti | Dove, Ruddy Ground |
| Dove, Spotted | Streptopelia chinensis | Dove, Spotted |
| Dove, White-winged | Zenaida asiatica | Dove, White-winged |
| Dowitcher, Long-billed | Limnodromus scolopaceus | Dowitcher, Long-billed |
| Dowitcher, Short-billed | Limnodromus griseus | Dowitcher, Short-billed |
| Duck, Black-bellied Whistling | Dendrocygna autumnalis | Duck, Black-bellied Whistling |
| Duck, Fulvous Whistling | Dendrocygna bicolor | Duck, Fulvous Whistling |
| Duck, Harlequin | Histrionicus histrionicus | Duck, Harlequin |
| Duck, Long-tailed | Clangula hyemalis | Duck, Long-tailed |
| Duck, Mandarin | Aix galericulata | Duck, Mandarin |
| Duck, Ring-necked | Aythya collaris | Duck, Ring-necked |
| Duck, Ruddy | Oxyura jamaicensis | Duck, Ruddy |
| Duck, Tufted | Aythya fuligula | Duck, Tufted |
| Duck, Wood | Aix sponsa | Duck, Wood |
| Dunlin | Calidris alpina | Dunlin |
| Eagle, Bald | Haliaeetus leucocephalus | Eagle, Bald |
| Eagle, Golden | Aquila chrysaetos | Eagle, Golden |
| Egret, Cattle | Bubulcus ibis | Egret, Cattle |
| Egret, Great | Ardea alba | Egret, Great |
| Egret, Reddish | Egretta rufescens | Egret, Reddish |
| Egret, Snowy | Egretta thula | Egret, Snowy |
| Eider, King | Somateria spectabilis | Eider, King |
| Falcon, Peregrine | Falco peregrinus | Falcon, Peregrine |
| Falcon, Prairie | Falco mexicanus | Falcon, Prairie |
| Finch, Cassin's | Carpodacus cassinii | Finch, Cassin's |
| Finch, House | Carpodacus mexicanus | Finch, House |
| Finch, Purple | Carpodacus purpureus | Finch, Purple |
| Flicker, Northern | Colaptes auratus | Flicker, Northern |
| Flycatcher, Ash-throated | Myiarchus cinerascens | Flycatcher, Ash-throated |
| Flycatcher, Brown-crested | Myiarchus tyrannulus | Flycatcher, Brown-crested |
| Flycatcher, Dusky | Empidonax oberholseri | Flycatcher, Dusky |
| Flycatcher, Dusky-capped | Myiarchus tuberculifer | Flycatcher, Dusky-capped |
| Flycatcher, Gray | Empidonax wrightii | Flycatcher, Gray |
| Flycatcher, Great Crested | Myiarchus crinitus | Flycatcher, Great Crested |
| Flycatcher, Hammond's | Empidonax hammondii | Flycatcher, Hammond's |
| Flycatcher, Least | Empidonax minimus | Flycatcher, Least |
| Flycatcher, Olive-sided | Contopus cooperi | Flycatcher, Olive-sided |
| Flycatcher, Scissor-tailed | Tyrannus forficatus | Flycatcher, Scissor-tailed |
| Flycatcher, Sulphur-bellied | Myiodynastes luteiventris | Flycatcher, Sulphur-bellied |
| Flycatcher, Vermilion | Pyrocephalus rubinus | Flycatcher, Vermilion |
| Flycatcher, Western | Empidonax difficilis | Flycatcher, Western |
| Flycatcher, Willow | Empidonax traillii | Flycatcher, Willow |
| Flycatcher, Yellow-bellied | Empidonax flaviventris | Flycatcher, Yellow-bellied |
| Frigatebird, Magnificent | Fregata magnificens | Frigatebird, Magnificent |
| Fulmar, Northern | Fulmarus glacialis | Fulmar, Northern |
| Gadwall | Anas strepera | Gadwall |
| Gallinule, Common | Gallinula chloropus | Gallinule, Common |
| Gallinule, Purple | Porphyrula martinica | Gallinule, Purple |
| Gnatcatcher, Black-tailed | Polioptila melanura | Gnatcatcher, Black-tailed |
| Gnatcatcher, Blue-gray | Polioptila caerulea | Gnatcatcher, Blue-gray |
| Gnatcatcher, California | Polioptila californica | Gnatcatcher, California |
| Godwit, Bar-tailed | Limosa lapponica | Godwit, Bar-tailed |
| Godwit, Marbled | Limosa fedoa | Godwit, Marbled |
| Goldeneye, Barrow's | Bucephala islandica | Goldeneye, Barrow's |
| Goldeneye, Common | Bucephala clangula | Goldeneye, Common |
| Goldfinch, American | Carduelis tristis | Goldfinch, American |
| Goldfinch, Lawrence's | Carduelis lawrencei | Goldfinch, Lawrence's |
| Goldfinch, Lesser | Carduelis psaltria | Goldfinch, Lesser |
| Goose, Canada | Branta canadensis | Goose, Canada |
| Goose, Egyptian | Alopochen aegyptiacus | Goose, Egyptian |
| Goose, Greater White-fronted | Anser albifrons | Goose, Greater White-fronted |
| Goose, Ross' | Chen rossii | No page |
| Goose, Snow | Chen caerulescens | Goose, Snow |
| Goose, Swan | Anser cygnoides | Goose, Swan |
| Goshawk, Northern | Accipiter gentilis | Goshawk, Northern |
| Grackle, Common | Quiscalus quiscula | Grackle, Common |
| Grackle, Great-tailed | Quiscalus mexicanus | Grackle, Great-tailed |
| Grebe, Clark's | Aechmophorus clarkii | Grebe, Clark's |
| Grebe, Eared | Podiceps nigricollis | Grebe, Eared |
| Grebe, Horned | Podiceps auritus | Grebe, Horned |
| Grebe, Pied-billed | Podilymbus podiceps | Grebe, Pied-billed |
| Grebe, Red-necked | Podiceps grisegena | Grebe, Red-necked |
| Grebe, Western | Aechmophorus occidentalis | Grebe, Western |
| Grosbeak, Black-headed | Pheucticus melanocephalus | Grosbeak, Black-headed |
| Grosbeak, Blue | Passerina caerulea | Grosbeak, Blue |
| Grosbeak, Evening | Coccothraustes vespertinus | Grosbeak, Evening |
| Grosbeak, Rose-breasted | Pheucticus ludovicianus | Grosbeak, Rose-breasted |
| Guillemot, Pigeon | Cepphus columba | Guillemot, Pigeon |
| Gull, Belcher's | Larus belcheri | Gull, Belcher's |
| Gull, Black-headed | Larus ridibundus | Gull, Black-headed |
| Gull, Black-tailed | Larus crassirostris | Gull, Black-tailed |
| Gull, Bonaparte's | Larus philadelphia | Gull, Bonaparte's |
| Gull, California | Larus californicus | Gull, California |
| Gull, Franklin's | Larus pipixcan | Gull, Franklin's |
| Gull, Glaucous | Larus hyperboreus | Gull, Glaucous |
| Gull, Glaucous-winged | Larus glaucescens | Gull, Glaucous-winged |
| Gull, Heermann's | Larus heermanni | Gull, Heermann's |
| Gull, Herring | Larus argentatus | Gull, Herring |
| Gull, Iceland | Larus glaucoides | Gull, Iceland |
| Gull, Laughing | Larus atricilla | Gull, Laughing |
| Gull, Lesser Black-backed | Larus fuscus | Gull, Lesser Black-backed |
| Gull, Little | Larus minutus | Gull, Little |
| Gull, Mew | Larus canus | Gull, Mew |
| Gull, Ring-billed | Larus delawarensis | Gull, Ring-billed |
| Gull, Sabine's | Xema sabini | Gull, Sabine's |
| Gull, Thayer's | Larus thayeri | Gull, Thayer's |
| Gull, Western | Larus occidentalis | Gull, Western |
| Gull, Yellow-footed | Larus livens | Gull, Yellow-footed |
| Harrier, Northern | Circus cyaneus | Harrier, Northern |
| Hawk, Broad-winged | Buteo platypterus | Hawk, Broad-winged |
| Hawk, Cooper's | Accipiter cooperii | Hawk, Cooper's |
| Hawk, Ferruginous | Buteo regalis | Hawk, Ferruginous |
| Hawk, Harris' | Parabuteo unicinctus | Hawk, Harris' |
| Hawk, Red-shouldered | Buteo lineatus | Hawk, Red-shouldered |
| Hawk, Red-tailed | Buteo jamaicensis | Hawk, Red-tailed |
| Hawk, Rough-legged | Buteo lagopus | Hawk, Rough-legged |
| Hawk, Sharp-shinned | Accipiter striatus | Hawk, Sharp-shinned |
| Hawk, Swainson's | Buteo swainsoni | Hawk, Swainson's |
| Hawk, Zone-tailed | Buteo albonotatus | Hawk, Zone-tailed |
| Heron, Black-crowned Night | Nycticorax nycticorax | Heron, Black-crowned Night |
| Heron, Great Blue | Ardea herodias | Heron, Great Blue |
| Heron, Green | Butorides virescens | Heron, Green |
| Heron, Little Blue | Egretta caerulea | Heron, Little Blue |
| Heron, Tricolored | Egretta tricolor | Heron, Tricolored |
| Heron, Yellow-crowned Night | Nyctanassa violacea | Heron, Yellow-crowned Night |
| Hummingbird, Allen's | Selasphorus sasin | Hummingbird, Allen's |
| Hummingbird, Anna's | Calypte anna | Hummingbird, Anna's |
| Hummingbird, Black-chinned | Archilochus alexandri | Hummingbird, Black-chinned |
| Hummingbird, Broad-billed | Cynanthus latirostris | Hummingbird, Broad-billed |
| Hummingbird, Broad-tailed | Selasphorus platycercus | Hummingbird, Broad-tailed |
| Hummingbird, Calliope | Stellula calliope | Hummingbird, Calliope |
| Hummingbird, Costa's | Calypte costae | Hummingbird, Costa's |
| Hummingbird, Magnificent | Eugenes fulgens | Hummingbird, Magnificent |
| Hummingbird, Rufous | Selasphorus rufus | Hummingbird, Rufous |
| Hummingbird, Rufous/Allen's | Selasphorus sp. | Hummingbird, Rufous/Allen's |
| Hummingbird, Violet-crowned | Amazilia violiceps | Hummingbird, Violet-crowned |
| Hummingbird, Xantus' | Hylocharis xantusii | Hummingbird, Xantus' |
| Ibis, White | Eudocimus albus | Ibis, White |
| Ibis, White-faced | Plegadis chihi | Ibis, White-faced |
| Jaeger, Long-tailed | Stercorarius longicaudus | Jaeger, Long-tailed |
| Jaeger, Parasitic | Stercorarius parasiticus | Jaeger, Parasitic |
| Jaeger, Pomarine | Stercorarius pomarinus | Jaeger, Pomarine |
| Jay, Beechey's | Cyanocorax beecheii | Jay, Beechey's |
| Jay, Black-throated Magpie | Calocitta colliei | Jay, Black-throated Magpie |
| Jay, Green | Cyanocorax yncas | Jay, Green |
| Jay, Pinyon | Gymnorhinus cyanocephalus | Jay, Pinyon |
| Jay, Steller's | Cyanocitta stelleri | Jay, Steller's |
| Jay, Western Scrub | Aphelocoma californica | Jay, Western Scrub |
| Junco, Dark-eyed | Junco hyemalis | Junco, Dark-eyed |
| Kestrel, American | Falco sparverius | Kestrel, American |
| Killdeer | Charadrius vociferus | Killdeer |
| Kingbird, Cassin's | Tyrannus vociferans | Kingbird, Cassin's |
| Kingbird, Eastern | Tyrannus tyrannus | Kingbird, Eastern |
| Kingbird, Thick-billed | Tyrannus crassirostris | Kingbird, Thick-billed |
| Kingbird, Tropical | Tyrannus melancholicus | Kingbird, Tropical |
| Kingbird, Western | Tyrannus verticalis | Kingbird, Western |
| Kingfisher, Belted | Ceryle alcyon | Kingfisher, Belted |
| Kinglet, Golden-crowned | Regulus satrapa | Kinglet, Golden-crowned |
| Kinglet, Ruby-crowned | Regulus calendula | Kinglet, Ruby-crowned |
| Kite, Mississippi | Ictinia mississippiensis | Kite, Mississippi |
| Kite, White-tailed | Elanus leucurus | Kite, White-tailed |
| Kittiwake, Black-legged | Rissa tridactyla | Kittiwake, Black-legged |
| Knot, Red | Calidris canutus | Knot, Red |
| Lark, Horned | Eremophila alpestris | Lark, Horned |
| Longspur, Chestnut-collared | Calcarius ornatus | Longspur, Chestnut-collared |
| Longspur, Lapland | Calcarius lapponicus | Longspur, Lapland |
| Longspur, McCown's | Calcarius mccownii | Longspur, McCown's |
| Loon, Common | Gavia immer | Loon, Common |
| Loon, Pacific | Gavia pacifica | Loon, Pacific |
| Loon, Red-throated | Gavia stellata | Loon, Red-throated |
| Macaw, Blue-and-yellow | Ara ararauna | Macaw, Blue-and-yellow |
| Mallard | Anas platyrhynchos | Mallard |
| Mannikin, Nutmeg | Lonchura punctulata | Mannikin, Nutmeg |
| Martin, Purple | Progne subis | Martin, Purple |
| Meadowlark, Western | Sturnella neglecta | Meadowlark, Western |
| Merganser, Common | Mergus merganser | Merganser, Common |
| Merganser, Hooded | Lophodytes cucullatus | Merganser, Hooded |
| Merganser, Red-breasted | Mergus serrator | Merganser, Red-breasted |
| Merlin | Falco columbarius | Merlin |
| Mockingbird, Northern | Mimus polyglottos | Mockingbird, Northern |
| Murre, Common | Uria aalge | Murre, Common |
| Murrelet, Ancient | Synthliboramphus antiquus | Murrelet, Ancient |
| Murrelet, Craveri's | Synthliboramphus craveri | Murrelet, Craveri's |
| Murrelet, Kittlitz's | Brachyramphus brevirostris | Murrelet, Kittlitz's |
| Murrelet, Marbled | Brachyramphus marmoratus | Murrelet, Marbled |
| Murrelet, Xantus' | Synthliboramphus hypoleucus | Murrelet, Xantus' |
| Nighthawk, Common | Chordeiles minor | Nighthawk, Common |
| Nighthawk, Lesser | Chordeiles acutipennis | Nighthawk, Lesser |
| Nutcracker, Clark's | Nucifraga columbiana | Nutcracker, Clark's |
| Nuthatch, Pygmy | Sitta pygmaea | Nuthatch, Pygmy |
| Nuthatch, Red-breasted | Sitta canadensis | Nuthatch, Red-breasted |
| Nuthatch, White-breasted | Sitta carolinensis | Nuthatch, White-breasted |
| Oriole, Baltimore | Icterus galbula | Oriole, Baltimore |
| Oriole, Black-backed | Icterus abeillei | Oriole, Black-backed |
| Oriole, Bullock's | Icterus bullockii | Oriole, Bullock's |
| Oriole, Hooded | Icterus cucullatus | Oriole, Hooded |
| Oriole, Orchard | Icterus spurius | Oriole, Orchard |
| Oriole, Scott's | Icterus parisorum | Oriole, Scott's |
| Oriole, Streak-backed | Icterus pustulatus | Oriole, Streak-backed |
| Osprey | Pandion haliaetus | Osprey |
| Ovenbird | Seiurus aurocapillus | Ovenbird |
| Owl, Barn | Tyto alba | Owl, Barn |
| Owl, Burrowing | Athene cunicularia | Owl, Burrowing |
| Owl, Flammulated | Otus flammeolus | Owl, Flammulated |
| Owl, Great Horned | Bubo virginianus | Owl, Great Horned |
| Owl, Long-eared | Asio otus | Owl, Long-eared |
| Owl, Northern Pygmy | Glaucidium gnoma | Owl, Northern Pygmy |
| Owl, Northern Saw-whet | Aegolius acadicus | Owl, Northern Saw-whet |
| Owl, Short-eared | Asio flammeus | Owl, Short-eared |
| Owl, Spotted | Strix occidentalis | Owl, Spotted |
| Owl, Western Screech | Megascops kennicottii | Owl, Western Screech |
| Oystercatcher, American | Haematopus palliatus | Oystercatcher, American |
| Oystercatcher, Black | Haematopus bachmani | Oystercatcher, Black |
| Parakeet, Black-hooded | Nandayus nenday | Parakeet, Black-hooded |
| Parakeet, Blue-crowned | Aratinga acuticaudata | Parakeet, Blue-crowned |
| Parakeet, Mitred | Aratinga mitrata | Parakeet, Mitred |
| Parakeet, Moustached | Psittacula alexandri | Parakeet, Moustached |
| Parakeet, Red-masked | Aratinga erythrogenys | Parakeet, Red-masked |
| Parakeet, Rose-ringed | Psittacula krameri | Parakeet, Rose-ringed |
| Parrot, Lilac-crowned | Amazona finschi | Parrot, Lilac-crowned |
| Parrot, Red-crowned | Amazona viridigenalis | Parrot, Red-crowned |
| Parrot, Yellow-crowned | Amazona ochrocephala | Parrot, Yellow-crowned |
| Parrotlet, Green-rumped | Forpus passerinus | Parrotlet, Green-rumped |
| Parula, Northern | Parula americana | Parula, Northern |
| Pelican, American White | Pelecanus erythrorhynchos | Pelican, American White |
| Pelican, Brown | Pelecanus occidentalis | Pelican, Brown |
| Petrel, Cook's | Pterodroma cookii | Petrel, Cook's |
| Pewee, Greater | Contopus pertinax | Pewee, Greater |
| Pewee, Western Wood | Contopus sordidulus | Pewee, Western Wood |
| Phainopepla | Phainopepla nitens | Phainopepla |
| Phalarope, Red | Phalaropus fulicaria | Phalarope, Red |
| Phalarope, Red-necked | Phalaropus lobatus | Phalarope, Red-necked |
| Phalarope, Wilson's | Phalaropus tricolor | Phalarope, Wilson's |
| Pheasant, Ring-necked | Phasianus colchicus | Pheasant, Ring-necked |
| Phoebe, Black | Sayornis nigricans | Phoebe, Black |
| Phoebe, Eastern | Sayornis phoebe | Phoebe, Eastern |
| Phoebe, Say's | Sayornis saya | Phoebe, Say's |
| Pigeon, Band-tailed | Patagioenas fasciata | Pigeon, Band-tailed |
| Pigeon, Domestic | Columba livia | Pigeon, Domestic |
| Pintail, Northern | Anas acuta | Pintail, Northern |
| Pipit, American | Anthus rubescens | Pipit, American |
| Pipit, Red-throated | Anthus cervinus | Pipit, Red-throated |
| Pipit, Sprague's | Anthus spragueii | Pipit, Sprague's |
| Plover, American Golden | Pluvialis dominica | Plover, American Golden |
| Plover, Black-bellied | Pluvialis squatarola | Plover, Black-bellied |
| Plover, Mountain | Charadrius montanus | Plover, Mountain |
| Plover, Pacific Golden | Pluvialis fulva | Plover, Pacific Golden |
| Plover, Semipalmated | Charadrius semipalmatus | Plover, Semipalmated |
| Plover, Snowy | Charadrius alexandrinus | Plover, Snowy |
| Plover, Wilson's | Charadrius wilsonia | Plover, Wilson's |
| Poorwill, Common | Phalaenoptilus nuttallii | Poorwill, Common |
| Puffin, Horned | Fratercula corniculata | Puffin, Horned |
| Puffin, Tufted | Fratercula cirrhata | Puffin, Tufted |
| Pyrrhuloxia | Cardinalis sinuatus | Pyrrhuloxia |
| Quail, California | Callipepla californica | Quail, California |
| Quail, Gambel's | Callipepla gambelii | Quail, Gambel's |
| Quail, Mountain | Oreortyx pictus | Quail, Mountain |
| Rail, Black | Laterallus jamaicensis | Rail, Black |
| Rail, Clapper | Rallus longirostris | Rail, Clapper |
| Rail, Virginia | Rallus limicola | Rail, Virginia |
| Rail, Yellow | Coturnicops noveboracensis | Rail, Yellow |
| Raven, Common | Corvus corax | Raven, Common |
| Redhead | Aythya americana | Redhead |
| Redshank, Spotted | Tringa erythropus | Redshank, Spotted |
| Redstart, American | Setophaga ruticilla | Redstart, American |
| Redstart, Painted | Myioborus pictus | Redstart, Painted |
| Roadrunner, Greater | Geococcyx californianus | Roadrunner, Greater |
| Robin, American | Turdus migratorius | Robin, American |
| Robin, Rufous-backed | Turdus rufopalliatus | Robin, Rufous-backed |
| Ruff | Philomachus pugnax | Ruff |
| Sanderling | Calidris alba | Sanderling |
| Sandpiper, Baird's | Calidris bairdii | Sandpiper, Baird's |
| Sandpiper, Buff-breasted | Tryngites subruficollis | Sandpiper, Buff-breasted |
| Sandpiper, Curlew | Calidris ferruginea | Sandpiper, Curlew |
| Sandpiper, Least | Calidris minutilla | Sandpiper, Least |
| Sandpiper, Pectoral | Calidris melanotos | Sandpiper, Pectoral |
| Sandpiper, Semipalmated | Calidris pusilla | Sandpiper, Semipalmated |
| Sandpiper, Sharp-tailed | Calidris acuminata | Sandpiper, Sharp-tailed |
| Sandpiper, Solitary | Tringa solitaria | Sandpiper, Solitary |
| Sandpiper, Spotted | Actitis macularia | Sandpiper, Spotted |
| Sandpiper, Stilt | Calidris himantopus | Sandpiper, Stilt |
| Sandpiper, Upland | Bartramia longicauda | Sandpiper, Upland |
| Sandpiper, Western | Calidris mauri | Sandpiper, Western |
| Sapsucker, Red-breasted | Sphyrapicus ruber | Sapsucker, Red-breasted |
| Sapsucker, Red-naped | Sphyrapicus nuchalis | Sapsucker, Red-naped |
| Sapsucker, Williamson's | Sphyrapicus thyroideus | Sapsucker, Williamson's |
| Sapsucker, Yellow-bellied | Sphyrapicus varius | Sapsucker, Yellow-bellied |
| Scaup, Greater | Aythya marila | Scaup, Greater |
| Scaup, Lesser | Aythya affinis | Scaup, Lesser |
| Scoter, Black | Melanitta nigra | Scoter, Black |
| Scoter, Surf | Melanitta perspicillata | Scoter, Surf |
| Scoter, White-winged | Melanitta fusca | Scoter, White-winged |
| Seedeater, White-collared | Sporophila torqueola | Seedeater, White-collared |
| Shearwater, Black-vented | Puffinus opisthomelas | Shearwater, Black-vented |
| Shearwater, Buller's | Puffinus bulleri | Shearwater, Buller's |
| Shearwater, Flesh-footed | Puffinus carneipes | Shearwater, Flesh-footed |
| Shearwater, Manx | Puffinus puffinus | Shearwater, Manx |
| Shearwater, Pink-footed | Puffinus creatopus | Shearwater, Pink-footed |
| Shearwater, Short-tailed | Puffinus tenuirostris | Shearwater, Short-tailed |
| Shearwater, Sooty | Puffinus griseus | Shearwater, Sooty |
| Shelduck, Ruddy | Tadorna ferruginea | Shelduck, Ruddy |
| Shoveler, Northern | Anas clypeata | Shoveler, Northern |
| Shrike, Loggerhead | Lanius ludovicianus | Shrike, Loggerhead |
| Silky-Flycatcher, Gray | Ptilogonys cinereus | Silky-Flycatcher, Gray |
| Siskin, Pine | Carduelis pinus | Siskin, Pine |
| Skimmer, Black | Rynchops niger | Skimmer, Black |
| Skua, South Polar | Stercorarius maccormicki | Skua, South Polar |
| Snipe, Wilson's | Gallinago gallinago | Snipe, Wilson's |
| Solitaire, Townsend's | Myadestes townsendi | Solitaire, Townsend's |
| Sora | Porzana carolina | Sora |
| Sparrow, American Tree | Spizella arborea | Sparrow, American Tree |
| Sparrow, Baird's | Ammodramus bairdii | Sparrow, Baird's |
| Sparrow, Black-chinned | Spizella atrogularis | Sparrow, Black-chinned |
| Sparrow, Black-throated | Amphispiza bilineata | Sparrow, Black-throated |
| Sparrow, Brewer's | Spizella breweri | Sparrow, Brewer's |
| Sparrow, Cassin's | Aimophila cassinii | Sparrow, Cassin's |
| Sparrow, Chipping | Spizella passerina | Sparrow, Chipping |
| Sparrow, Clay-colored | Spizella pallida | Sparrow, Clay-colored |
| Sparrow, Fox | Passerella iliaca | Sparrow, Fox |
| Sparrow, Golden-crowned | Zonotrichia atricapilla | Sparrow, Golden-crowned |
| Sparrow, Grasshopper | Ammodramus savannarum | Sparrow, Grasshopper |
| Sparrow, Harris' | Zonotrichia querula | Sparrow, Harris' |
| Sparrow, House | Passer domesticus | Sparrow, House |
| Sparrow, Lark | Chondestes grammacus | Sparrow, Lark |
| Sparrow, Lincoln's | Melospiza lincolnii | Sparrow, Lincoln's |
| Sparrow, Nelson's Sharp-tailed | Ammodramus nelsoni | Sparrow, Nelson's Sharp-tailed |
| Sparrow, Rufous-crowned | Aimophila ruficeps | Sparrow, Rufous-crowned |
| Sparrow, Sage | Amphispiza belli | Sparrow, Sage |
| Sparrow, Savannah | Passerculus sandwichensis | Sparrow, Savannah |
| Sparrow, Song | Melospiza melodia | Sparrow, Song |
| Sparrow, Swamp | Melospiza georgiana | Sparrow, Swamp |
| Sparrow, Vesper | Pooecetes gramineus | Sparrow, Vesper |
| Sparrow, White-crowned | Zonotrichia leucophrys | Sparrow, White-crowned |
| Sparrow, White-throated | Zonotrichia albicollis | Sparrow, White-throated |
| Spoonbill, Roseate | Platalea ajaja | Spoonbill, Roseate |
| Starling, European | Sturnus vulgaris | Starling, European |
| Stilt, Black-necked | Himantopus mexicanus | Stilt, Black-necked |
| Stint, Red-necked | Calidris ruficollis | Stint, Red-necked |
| Stork, Wood | Mycteria americana | Stork, Wood |
| Storm-Petrel, Ashy | Oceanodroma homochroa | Storm-Petrel, Ashy |
| Storm-Petrel, Band-rumped | Oceanodroma castro | Storm-Petrel, Band-rumped |
| Storm-Petrel, Black | Oceanodroma melania | Storm-Petrel, Black |
| Storm-Petrel, Fork-tailed | Oceanodroma furcata | Storm-Petrel, Fork-tailed |
| Storm-Petrel, Leach's | Oceanodroma leucorhoa | Storm-Petrel, Leach's |
| Storm-Petrel, Least | Oceanodroma microsoma | Storm-Petrel, Least |
| Storm-Petrel, Wilson's | Oceanites oceanicus | Storm-Petrel, Wilson's |
| Surfbird | Aphriza virgata | Surfbird |
| Swallow, Bank | Riparia riparia | Swallow, Bank |
| Swallow, Barn | Hirundo rustica | Swallow, Barn |
| Swallow, Cliff | Petrochelidon pyrrhonota | Swallow, Cliff |
| Swallow, Northern Rough-winged | Stelgidopteryx serripennis | Swallow, Northern Rough-Winged |
| Swallow, Tree | Tachycineta bicolor | Swallow, Tree |
| Swallow, Violet-green | Tachycineta thalassina | Swallow, Violet-green |
| Swan, Mute | Cygnus olor | Swan, Mute |
| Swan, Tundra (Whistling) | Cygnus columbianus | Swan, Tundra (Whistling) |
| Swift, Black | Cypseloides niger | Swift, Black |
| Swift, Chimney | Chaetura pelagica | Swift, Chimney |
| Swift, Vaux's | Chaetura vauxi | Swift, Vaux's |
| Swift, White-throated | Aeronautes saxatalis | Swift, White-throated |
| Tanager, Hepatic | Piranga flava | Tanager, Hepatic |
| Tanager, Scarlet | Piranga olivacea | Tanager, Scarlet |
| Tanager, Summer | Piranga rubra | Tanager, Summer |
| Tanager, Western | Piranga ludoviciana | Tanager, Western |
| Tattler, Wandering | Heteroscelus incanus | Tattler, Wandering |
| Teal, Blue-winged | Anas discors | Teal, Blue-winged |
| Teal, Cinnamon | Anas cyanoptera | Teal, Cinnamon |
| Teal, Common | Anas crecca | Teal, Common |
| Teal, Green-winged | Anas crecca | Teal, Green-winged |
| Tern, Arctic | Sterna paradisaea | Tern, Arctic |
| Tern, Black | Chlidonias niger | Tern, Black |
| Tern, Caspian | Sterna caspia | Tern, Caspian |
| Tern, Common | Sterna hirundo | Tern, Common |
| Tern, Elegant | Sterna elegans | Tern, Elegant |
| Tern, Forster's | Sterna forsteri | Tern, Forster's |
| Tern, Gull-billed | Sterna nilotica | Tern, Gull-billed |
| Tern, Least | Sterna antillarum | Tern, Least |
| Tern, Royal | Sterna maxima | Tern, Royal |
| Tern, Sandwich | Sterna sandvicensis | Tern, Sandwich |
| Tern, Sooty | Sterna fuscata | Tern, Sooty |
| Thrasher, Bendire's | Toxostoma bendirei | Thrasher, Bendire's |
| Thrasher, Brown | Toxostoma rufum | Thrasher, Brown |
| Thrasher, California | Toxostoma redivivum | Thrasher, California |
| Thrasher, Crissal | Toxostoma crissale | Thrasher, Crissal |
| Thrasher, LeConte's | Toxostoma lecontei | Thrasher, LeConte's |
| Thrasher, Sage | Oreoscoptes montanus | Thrasher, Sage |
| Thrush, Gray-cheeked | Catharus minimus | Thrush, Gray-cheeked |
| Thrush, Hermit | Catharus guttatus | Thrush, Hermit |
| Thrush, Swainson's | Catharus ustulatus | Thrush, Swainson's |
| Thrush, Varied | Ixoreus naevius | Thrush, Varied |
| Thrush, Wood | Hylocichla mustelina | Thrush, Wood |
| Titmouse, Oak | Baeolophus inornatus | Titmouse, Oak |
| Towhee, California | Pipilo crissalis | Towhee, California |
| Towhee, Green-tailed | Pipilo chlorurus | Towhee, Green-tailed |
| Towhee, Spotted | Pipilo maculatus | Towhee, Spotted |
| Tropicbird, Red-billed | Phaethon aethereus | Tropicbird, Red-billed |
| Tropicbird, Red-tailed | Phaethon rubricauda | Tropicbird, Red-tailed |
| Turkey, Wild | Meleagris gallopavo | Turkey, Wild |
| Turnstone, Black | Arenaria melanocephala | Turnstone, Black |
| Turnstone, Ruddy | Arenaria interpres | Turnstone, Ruddy |
| Verdin | Auriparus flaviceps | Verdin |
| Vireo, Bell's | Vireo bellii | Vireo, Bell's |
| Vireo, Blue-headed | Vireo solitarius | Vireo, Blue-headed |
| Vireo, Cassin's | Vireo cassinii | Vireo, Cassin's |
| Vireo, Gray | Vireo vicinior | Vireo, Gray |
| Vireo, Hutton's | Vireo huttoni | Vireo, Hutton's |
| Vireo, Philadelphia | Vireo philadelphicus | Vireo, Philadelphia |
| Vireo, Plumbeous | Vireo plumbeus | Vireo, Plumbeous |
| Vireo, Red-eyed | Vireo olivaceus | Vireo, Red-eyed |
| Vireo, Warbling | Vireo gilvus | Vireo, Warbling |
| Vireo, White-eyed | Vireo griseus | Vireo, White-eyed |
| Vireo, Yellow-green | Vireo flavoviridis | Vireo, Yellow-green |
| Vireo, Yellow-throated | Vireo flavifrons | Vireo, Yellow-throated |
| Vulture, Turkey | Cathartes aura | Vulture, Turkey |
| Warbler, Bay-breasted | Dendroica castanea | Warbler, Bay-breasted |
| Warbler, Black-and-white | Mniotilta varia | Warbler, Black-and-white |
| Warbler, Blackburnian | Dendroica fusca | Warbler, Blackburnian |
| Warbler, Blackpoll | Dendroica striata | Warbler, Blackpoll |
| Warbler, Black-throated Blue | Dendroica caerulescens | Warbler, Black-throated Blue |
| Warbler, Black-throated Gray | Dendroica nigrescens | Warbler, Black-throated Gray |
| Warbler, Black-throated Green | Dendroica virens | Warbler, Black-throated Green |
| Warbler, Blue-winged | Vermivora pinus | Warbler, Blue-winged |
| Warbler, Canada | Wilsonia canadensis | Warbler, Canada |
| Warbler, Cape May | Dendroica tigrina | Warbler, Cape May |
| Warbler, Cerulean | Dendroica cerulea | Warbler, Cerulean |
| Warbler, Chestnut-sided | Dendroica pensylvanica | Warbler, Chestnut-sided |
| Warbler, Connecticut | Oporornis agilis | Warbler, Connecticut |
| Warbler, Golden-winged | Vermivora chrysoptera | Warbler, Golden-winged |
| Warbler, Grace's | Dendroica graciae | Warbler, Grace's |
| Warbler, Hermit | Dendroica occidentalis | Warbler, Hermit |
| Warbler, Hooded | Wilsonia citrina | Warbler, Hooded |
| Warbler, Kentucky | Oporornis formosus | Warbler, Kentucky |
| Warbler, Lucy's | Vermivora luciae | Warbler, Lucy's |
| Warbler, Macgillivray's | Oporornis tolmiei | Warbler, Macgillivray's |
| Warbler, Magnolia | Dendroica magnolia | Warbler, Magnolia |
| Warbler, Mourning | Oporornis philadelphia | Warbler, Mourning |
| Warbler, Nashville | Vermivora ruficapilla | Warbler, Nashville |
| Warbler, Orange-crowned | Vermivora celata | Warbler, Orange-crowned |
| Warbler, Palm | Dendroica palmarum | Warbler, Palm |
| Warbler, Pine | Dendroica pinus | Warbler, Pine |
| Warbler, Prairie | Dendroica discolor | Warbler, Prairie |
| Warbler, Prothonotary | Protonotaria citrea | Warbler, Prothonotary |
| Warbler, Red-faced | Cardellina rubrifrons | Warbler, Red-faced |
| Warbler, Tennessee | Vermivora peregrina | Warbler, Tennessee |
| Warbler, Townsend's | Dendroica townsendi | Warbler, Townsend's |
| Warbler, Virginia's | Vermivora virginiae | Warbler, Virginia's |
| Warbler, Wilson's | Wilsonia pusilla | Warbler, Wilson's |
| Warbler, Worm-eating | Helmitheros vermivorus | Warbler, Worm-eating |
| Warbler, Yellow | Dendroica petechia | Warbler, Yellow |
| Warbler, Yellow-rumped | Dendroica coronata | Warbler, Yellow-rumped |
| Warbler, Yellow-throated | Dendroica dominica | Warbler, Yellow-throated |
| Waterthrush, Louisiana | Seiurus motacilla | Waterthrush, Louisiana |
| Waterthrush, Northern | Seiurus noveboracensis | Waterthrush, Northern |
| Waxwing, Bohemian | Bombycilla garrulus | Waxwing, Bohemian |
| Waxwing, Cedar | Bombycilla cedrorum | Waxwing, Cedar |
| Wheatear, Northern | Oenanthe oenanthe | Wheatear, Northern |
| Whimbrel | Numenius phaeopus | Whimbrel |
| Whip-poor-will | Caprimulgus vociferus | Whip-poor-will |
| White-eye, Oriental | Zosterops palpebrosus | White-eye, Oriental |
| Wigeon, American | Anas americana | Wigeon, American |
| Wigeon, Eurasian | Anas penelope | Wigeon, Eurasian |
| Willet | Catoptrophorus semipalmatus | Willet |
| Woodpecker, Acorn | Melanerpes formicivorus | Woodpecker, Acorn |
| Woodpecker, Downy | Picoides pubescens | Woodpecker, Downy |
| Woodpecker, Gila | Melanerpes uropygialis | Woodpecker, Gila |
| Woodpecker, Hairy | Picoides villosus | Woodpecker, Hairy |
| Woodpecker, Ladder-backed | Picoides scalaris | Woodpecker, Ladder-backed |
| Woodpecker, Lewis' | Melanerpes lewis | Woodpecker, Lewis' |
| Woodpecker, Nuttall's | Picoides nuttallii | Woodpecker, Nuttall's |
| Woodpecker, White-headed | Picoides albolarvatus | Woodpecker, White-headed |
| Wren, Bewick's | Thryomanes bewickii | Wren, Bewick's |
| Wren, Cactus | Campylorhynchus brunneicapillus | Wren, Cactus |
| Wren, Canyon | Catherpes mexicanus | Wren, Canyon |
| Wren, House | Troglodytes aedon | Wren, House |
| Wren, Marsh | Cistothorus palustris | Wren, Marsh |
| Wren, Rock | Salpinctes obsoletus | Wren, Rock |
| Wren, Winter | Troglodytes troglodytes | Wren, Winter |
| Wrentit | Chamaea fasciata | Wrentit |
| Yellowlegs, Greater | Tringa melanoleuca | Yellowlegs, Greater |
| Yellowlegs, Lesser | Tringa flavipes | Yellowlegs, Lesser |
| Yellowthroat, Common | Geothlypis trichas | Yellowthroat, Common |
| Warbler, Bay-breasted | Dendroica castanea | Warbler, Bay-breasted |