| Common Name | Latin Name |
| Abbott’s Lesser Sulphur-crested Cockatoo | Cacatua sulphurea abbotti |
| `O`u | Psittirostra psittacea |
| Abdim’s Stork | Ciconia abdimii |
| Abert’s Towhee | Pipilo aberti |
| Abyssinian Eagle Owl | Bubo cinerascens |
| Abyssinian Ground Hornbill | Bucorvus abyssinicus |
| Abyssinian Lovebird | Agapornis taranta |
| Acadian Flycatcher | Empidonax virescens |
| Acorn Woodpecker | Melanerpes formicivorus |
| Adelaide Rosella | Platycercus adelaidae |
| Adelie Penguin | Pygoscelis adeliae |
| Adjutant Stork | Leptoptilos javanicus |
| African Crowned Eagle | Stephanoaetus coronatus |
| African Eagle Owl | Bubo africanus |
| African Fishing Eagle | Haliaeetus vocifer |
| African Golden Oriole | Oriolus auratus |
| African Green-Pigeon | Treron australis calva |
| African Jacana | Actophilornis africanus |
| African Penguin | Spheniscus demersus |
| African Pied Crow | Corvus albus |
| African Pygmy Falcon | Polihierax semitorquatus |
| African Ring-necked Parakeet | Psittacula krameri |
| African Shoebill | Balaeniceps rex |
| African Spoonbill | Platalea alba |
| African Spotted Eagle Owl | Bubo africanus |
| African Spotted Owl | Bubo africanus |
| African White-backed Vulture | Gyps bengalensis africanus |
| African White-backed Vulture | Gyps africanus |
| African Wood Owl | Strix leptogrammica |
| African Wood Owl | Strix woodfordii |
| Akiapola`au | Hemignathus munroi |
| Alder Flycatcher | Empidonax alnorum |
| Aleutian Tern | Sterna aleutica |
| Alexandra’s Parakeet | Polytelis alexandrae |
| Alexandrine Parakeet | Psittacula eupatria |
| Allen’s Hummingbird | Selasphorus sasin |
| Altamira Oriole | Icterus gularis |
| Alti Saker Falcon | Falco cherrug |
| Amazonian Umbrella Bird | Cephalopterus ornatus |
| Amboina King Parrot | Alisterus amboinensis amboinensis |
| American Avocet | Recurvirostra americana |
| American Bittern | Botaurus lentiginosus |
| American Black Duck | Anas rubripes |
| American Black Vulture | Coragyps atratus |
| American Coot | Fulica americana |
| American Crow | Corvus brachyrhynchos |
| American Dipper | Cinclus mexicanus |
| American Flamingo | Phoenicopterus ruber ruber |
| American Golden-Plover | Pluvialis dominica |
| American Goldfinch | Carduelis tristis |
| American Kestrel | Falco sparverius |
| American Kestrel | Falco sparverius |
| American Oystercatcher | Haematopus palliatus |
| American Pipit | Anthus rubescens |
| American Redstart | Setophaga ruticilla |
| American Robin | Turdus migratorius |
| American Tree Sparrow | Spizella arborea |
| American White Pelican | Pelecanus erythrorhynchos |
| American White Pelican | Pelecanus erythrorhynchos |
| American Wigeon | Anas americana |
| American Woodcock | Scolopax minor |
| Ancient Murrelet | Synthliboramphus antiquus |
| Andaman Island Parakeet | Psittacula eupatria magnirostris |
| Andean Guan | Penelope montagnii |
| Andean Parakeet | Bolborhynchus obygnesius |
| Andean Tinamou | Nothoprocta pentlandii |
| Anhinga | Anhinga anhinga |
| Anna’s Hummingbird | Calypte anna |
| Antillean Nighthawk | Chordeiles gundlachii |
| Antillean Palm-Swift | Tachornis phoenicobia |
| Aplomado Falcon | Falco femoralis |
| Arctic Loon | Gavia arctica |
| Arctic Tern | Sterna paradisaea |
| Arctic Warbler | Phylloscopus borealis |
| Arfak Lory | Oreopsittacus arfaki arfaki |
| Argentina Conure | Pyrrhura molinae australis |
| Aru Red-sided Eclectus Parrot | Eclectus roratus aruensis |
| Aruba Conure | Aratinga pertinax arubensis |
| Ashey-faced Barn Owl | Tyto glaucops |
| Ash-throated Flycatcher | Myiarchus cinerascens |
| Ashy Storm-Petrel | Oceanodroma homochroa |
| Asian Brown Flycatcher | Muscicapa dauurica |
| Asian Fish Owl | Ketupa ketupa |
| Asian Wood Owl | Strix leptogrammica |
| Atlantic Puffin | Fratercula arctica arctica |
| Atlantic Puffin | Fratercula arctica |
| Attwater’s greater Prairie-chicken | Tympanuchus cupido attwateri |
| Audubon’s crested Caracara | Polyborus plancus audubonii |
| Audubon’s Oriole | Icterus graduacauda |
| Audubon’s Shearwater | Puffinus lherminieri |
| Augur Buzzard | Buteo rufofusceus augur |
| Austen’s Laughing Thrush | Garrulax galbanus |
| Austral Conure | Enicognathus ferrugineus ferrugineus |
| Austral Parakeet | Enicognathus ferrugineus |
| Australasian Magpie | Gymnorhina tibicen |
| Australian Black Swan | Cygnus atratus |
| Australian King Parrot | Alisterus scapularis |
| Australian Magpie | Gymnorhina tibicen |
| Australian-crested Dove | Ocyphaps lophotes |
| Avocet | Recurvirostra avosetta |
| Aymara Parakeet | Psilopsiagon aymara |
| Aztec Conure | Aratinga nana astec |
| Aztec Thrush | Ridgwayia pinicola |
| Azure Gallinule | Porphyrula flavirostris |
| Azure-winged Magpie | Cyanopica cyana |
| Bachman’s Sparrow | Aimophila aestivalis |
| Bachman’s Warbler | Vermivora bachmanii |
| Bahama Mockingbird | Mimus gundlachii |
| Bahama Pintail | Anas bahamensis |
| Bahama Swallow | Tachycineta cyaneoviridis |
| Bahama Woodstar | Calliphlox evelynae |
| Baikal Teal | Anas formosa |
| Baird’s Sandpiper | Calidris bairdii |
| Baird’s Sparrow | Ammodramus bairdii |
| bald Eagle | Haliaeetus leucocephalus |
| Bald Eagle | Haliaeetus albicilla leucocephalus |
| Bald Eagle | Haliaeetus leucocephalus |
| Bald Ibis | Geronticus eremita calvus |
| Bali Mynah | Leucopsar rothschildi |
| Bali Starling | Leucopsar rothschildi |
| Baltimore Oriole | Icterus galbula |
| Bananaquit | Coereba flaveola |
| Band-bellied Owl | Pulsatrix melanota melanota |
| Banded Aracari | Pteroglossus torquatus pluricinctus |
| Band-rumped Storm-Petrel | Oceanodroma castro |
| Band-tailed Gull | Larus belcheri |
| Band-tailed Pigeon | Columba fasciata fasciata |
| Band-tailed Pigeon | Columba fasciata |
| Bank Mynah Bird | Acridotheres ginginianus |
| Bank Swallow | Riparia riparia |
| Barbary Falcon | Falco peregrinus peligrinoides |
| Bare-eyed Cockatoo | Cacatua sanguinea sanguinea |
| Bare-eyed Corella | Cacatua pastinator pastinator |
| Bare-eyed Ground-Dove | Metriopelia morenoi |
| Bare-eyed Pigeon | Columba corensis |
| Bare-faced Curassow | Crax rubra fasiolata |
| Bare-faced Go-away Bird | Corythaixoides personata personata |
| Bare-faced Ground-Dove | Metriopelia ceciliae |
| Bar-headed Goose | Anser indicus |
| Barn Owl | Tyto alba |
| Barn Owl | Tyto alba |
| Barn Swallow | Hirundo rustica |
| Barnacle Goose | Branta leucopsis |
| Barnacle Goose | Branta leucopsis |
| Barnard’s Parakeet | Barnardius barnardi |
| Barraband Parakeet | Polytelis swainsonii |
| Barraband’s Parrot | Pionopsitta barrabandi |
| Barred Cuckoo-Dove | Macropygia unchall |
| Barred Owl | Strix varia varia |
| Barred Owl | Strix varia |
| Barred Parakeet | Bolborhynchus lineola tigrinus |
| Barrow’s Goldeneye | Bucephala islandica |
| Bar-tailed Godwit | Limosa lapponica |
| Bartletts Bleeding Heart Dove | Gallicolumba bartletti |
| Bay-breasted Warbler | Dendroica castanea |
| Bay-headed Tanager | Tangara gyrola |
| Bean Goose | Anser fabalis |
| Bearded Barbet | Lybius dubius dubius |
| Bearded Vulture | Guaetus barbatus |
| Bee Bee Parrot | Brotogeris jugularis |
| Belize Yellow-headed Amazon | Amazona oratrix belizensis |
| Bell Magpie | Gymnorhina tibicen |
| Bell’s Vireo | Vireo bellii |
| Belted Kingfisher | Megaceryle alcyon |
| Belted Kingfisher | Ceryle alcyon |
| Bendire’s Thrasher | Toxostoma bendirei |
| Bengal Eagle Owl | Bubo bubo bengalensis |
| Berlepsch’s Conure | Pyrrhura melanura berlepschi |
| Bernier’s Teal | Anas bernieri |
| Bernstein’s Lory | Chalcopsitta atra bersteini |
| Berylline Hummingbird | Amazilia beryllina |
| Beryl-spangled Tanager | Tangara nigroviridis |
| Bewick’s Wren | Thryomanes bewickii |
| Biak Red Lory | Eos histrio cyanogenia |
| Bicknell’s Thrush | Catharus bicknelli |
| Bird of Paradise | Cicinnurus regius |
| Black Catbird | Melanoptila glabrirostris |
| Black Crake | Amaurornis flavirostris |
| Black Curassow | Crax rubra alector |
| Black Eagle | Aquila verreaux |
| Black Guillemot | Cepphus grylle |
| Black Guillemot | Cepphus grylle |
| Black Lory | Chalcopsitta atra atra |
| Black Noddy | Anous minutus |
| Black Oystercatcher | Haematopus bachmani |
| Black Parrot | Coracopsis nigra |
| Black Phoebe | Sayornis nigricans |
| Black Rail | Laterallus jamaicensis |
| Black Rosy-Finch | Leucosticte atrata |
| Black Scoter | Melanitta nigra |
| Black Skimmer | Rynchops niger |
| Black Sparrow Hawk | Accipiter melanoleucus |
| Black Stork | Ciconia nigra |
| Black Storm-Petrel | Oceanodroma melania |
| Black Swan | Cygnus atratus |
| Black Swift | Cypseloides niger |
| Black Tern | Chlidonias niger |
| Black Thrush | Turdus infuscatus |
| Black Turnstone | Arenaria melanocephala |
| Black Vulture | Aegypius monachus |
| Black Vulture | Coragyps atratus |
| Black Vulture | Coragyps atratus |
| Black-and-white Warbler | Mniotilta varia |
| Black-backed Magpie | Gymnorhina tibicen |
| Black-backed Wagtail | Motacilla lugens |
| Black-backed Woodpecker | Picoides arcticus |
| Black-Banded Owl | Strix huhula |
| Black-bellied Plover | Pluvialis squatarola |
| Black-bellied Whistling Duck | Dendrocygna autumnalis |
| Black-bellied Whistling-Duck | Dendrocygna autumnalis |
| Black-billed Amazon | Amazona agilis |
| Black-billed Cuckoo | Coccyzus erythropthalmus |
| Black-billed Magpie | Pica pica |
| Black-billed Magpie (American) | Pica hudsonia |
| Black-billed Magpie (Eurasian) | Pica pica |
| Black-billed Mountain Toucan | Andigena hypoglauca nigrirostris |
| Black-billed Touraco | Tauraco schuetti |
| Black-billed Wood-Dove | Turtur abyssinicus |
| Black-browed Albatross | Thalassarche melanophris |
| Blackburnian Warbler | Dendroica fusca |
| Black-capped Chickadee | Poecile atricapillus |
| Black-capped Conure | Pyrrhura rupicola rupicola |
| Black-capped Gnatcatcher | Polioptila nigriceps |
| Black-capped Lory | Lorius lory lory |
| Black-capped Petrel | Pterodroma hasitata |
| black-capped Vireo | Vireo atricapilla |
| Black-capped Vireo | Vireo atricapillus |
| Black-capped Waxbill | Krimhilda nonnula |
| Black-casqued Hornbill | Ceratogymna atrata |
| Black-cheeked Lovebird | Agapornis personata nigrigensis |
| Black-cheeked Waxbill | Estrilda erythronotos |
| Black-chested Buzzard-Eagle | Geranoaetus melanoleucus |
| Black-chinned Hummingbird | Archilochus alexandri |
| Black-chinned Sparrow | Spizella atrogularis |
| Black-collared Barbet | Lybius torquatus |
| Black-collared Lovebird | Agapornis swindernianus |
| Black-crowned Night Heron | Nycticorax nycticorax nycticorax |
| Black-crowned Night-Heron | Nycticorax nycticorax |
| Black-crowned Pitta | Pitta granatina venusta |
| Black-eared Parrot | Hapalopsittaca melanotis |
| Black-eared Parrotlet | Touit melanonotus |
| Black-faced Grassquit | Tiaris bicolor |
| Black-faced Lory | Trichoglossus haematodus intermedius |
| Black-faced Lovebird | Agapornis taranta |
| Black-faced Spoonbill | Platalea minor |
| Black-footed Albatross | Phoebastria nigripes |
| Black-footed Penguin | Spheniscus demersus |
| Black-fronted Piping Guan | Pipile jucutinga |
| Black-headed Caique | Pionites melanocephala melanocephala |
| Black-headed Grosbeak | Pheucticus melanocephalus |
| Black-headed Gull | Larus ridibundus |
| Black-headed Sibia | Heterophasia melanoleuca |
| Black-legged Kittiwake | Rissa tridactyla |
| Black-lored Parrot | Tanygnathus gramineus |
| Black-mandibled Toucan | Ramphastos ambiguus ambiguus |
| Black-masked Lovebird | Agapornis personata nigrigenis |
| Black-necked Aracari | Pteroglossus aracari |
| Black-necked Crane | Grus nigricollis |
| Black-necked Stilt | Himantopus mexicanus |
| Black-necked Stilt | Himantopus mexicanus |
| Black-necked Stork | Ephippiorhynchus asiaticus |
| Black-necked Swan | Cygnus melanocorypha |
| Blackpoll Warbler | Dendroica striata |
| Black-shouldered Aracari | Pteroglossus aracari aracari |
| Blacksmith Plover | Vanellus armatus |
| Black-tailed Conure | Pyrrhura melanura |
| Black-tailed Gnatcatcher | Polioptila melanura |
| Black-tailed Godwit | Limosa limosa |
| Black-tailed Gull | Larus crassirostris |
| Black-throated Blue Warbler | Dendroica caerulescens |
| Black-throated Gray Warbler | Dendroica nigrescens |
| Black-throated Green Warbler | Dendroica virens |
| Black-throated Laughing Thrush | Garrulax chinensis chinensis |
| Black-throated Magpie Jay | Calocitta formosa colliei |
| Black-throated Nun Finch | Lonchura kelaarti |
| Black-throated Sparrow | Amphispiza bilineata |
| Black-vented Oriole | Icterus wagleri |
| Black-vented Shearwater | Puffinus opisthomelas |
| Black-whiskered Vireo | Vireo altiloquus |
| Black-winged Ground-Dove | Metriopelia melanoptera |
| Black-winged Lory | Eos cyanogenia |
| Black-winged Lovebird | Agapornis taranta |
| Black-winged Parrot | Hapalopsittaca melanotis |
| Black-winged Stilt | Himantopus himantopus |
| Black-winged Stilt | Himantopus himantopus |
| Blaze-winged Conure | Pyrrhura devillei |
| Blood-eared Conure | Pyrrhura hoematotis |
| Blossom-headed Parakeet | Psittacula roseata |
| Blue & Gold Macaw | Ara ararauna |
| Blue Bird | Sialia sialis |
| Blue Bunting | Cyanocompsa parellina |
| Blue Grosbeak | Guiraca caerulea |
| Blue Grouse | Dendragapus obscurus |
| Blue Jay | Cyanocitta cristata |
| Blue Jay | Cyanocitta cristata |
| Blue Magpie | Erythrorhyncha urocissa |
| Blue Mockingbird | Melanotis caerulescens |
| Blue Moorhen | Gallinula chloropus |
| Blue Mountain Lory | Trichoglossus haematodus moluccanus |
| Blue Quaker Parrot | Myiopsitta monachus monachus |
| Blue Tit | Parus caeruleus |
| Blue Whistling Thrush | Myiophonus caeruleus caeruleus |
| Blue-backed Parrot | Tanygnathus sumatranus |
| Blue-bellied Roller | Coracias cyanogaster |
| Blue-bonnet | Northiella haematogaster |
| Blue-bonnet Parakeet | Psephotus haematogaster |
| Blue-breasted Kingfisher | Halcyon malimbica |
| Blue-cheeked Amazon | Amazona dufresniana dufresniana |
| Blue-cheeked Lory | Eos histrio cyanogenia |
| Blue-collared Parrot | Geoffroyus simplex |
| Blue-crowned Amazon | Amazona farinosa guatemalae |
| Blue-crowned Barbet | Megalaima armillaris armillaris |
| Blue-crowned Conure | Aratinga acuticaudata acuticaudata |
| Blue-crowned Hanging Parrot | Loriculus galgulus |
| Blue-crowned Lorikeet | Vini australis |
| Blue-crowned Motmot | Momotus momota |
| Blue-crowned Pigeon | Goura cristata |
| Blue-crowned Racquet-tail | Prioniturus discurus discurus |
| Blue-eared Lorikeet | Charmosyna placentis |
| Blue-eared Lory | Eos semilarvata |
| Blue-eared Pheasant | Crossoptilon auritum |
| Blue-eyed Cockatoo | Cacatua ophthalmica |
| Blue-faced Fig Parrot | Cyclopsitta diophthalma |
| Blue-faced Honeyeater | Entomyzon cyanotis |
| Blue-faced Parrot Finch | Erythrura tricolor tricolor |
| Blue-footed Booby | Sula nebouxii |
| Blue-fronted Amazon | Amazona aestiva aestiva |
| Blue-fronted Lorikeet | Charmosyna toxopei |
| Blue-fronted Parrotlet | Touit dilectissima |
| Blue-gray Gnatcatcher | Polioptila caerulea |
| Blue-Grey Tanager | Thraupis episcopus |
| Blue-headed Macaw | Ara couloni |
| Blue-headed Pionus | Pionus menstruus menstruus |
| Blue-headed Racquet-tail | Prioniturus platenae platenae |
| Blue-headed Rainbow Lory | Trichoglossus haematodus caeruleiceps |
| Blue-headed Vireo | Vireo solitarius |
| Blue-margined Parakeet | Brotogeris chrysopterus gustavi |
| Blue-masked Lovebird | Agapornis personata |
| Blue-naped Mousebird | Urocolius macrourus macrourus |
| Blue-naped Parrot | Tanygnathus lucionensis |
| Blue-necked Tanager | Tangara cyanicollis |
| Blue-rumped Parrot | Psittinus cyanurus |
| Blue-rumped Parrotlet | Forpus cyanopygius |
| Blue-spotted Wood-Dove | Turtur afer |
| Blue-streaked Lory | Eos reticulata |
| Blue-tailed Lory | Eos histrio |
| Blue-thighed Lory | Lorius tibialis |
| Bluethroat | Luscinia svecica |
| Blue-throated Barbet | Megalaima asiatica asiatica |
| Blue-throated Conure | Pyrrhura cruentata |
| Blue-throated Hummingbird | Lampornis clemenciae |
| Blue-throated Macaw | Ara glaucogularis |
| Blue-throated Piping Guan | Pipile pipile cumanensis |
| Blue-winged Conure | Pyrrhura picta |
| Blue-winged Grass Parakeet | Neophema chrysostoma chrysostoma |
| Blue-winged Leafbird | Chloropsis cochinchinensis |
| Blue-winged Minla | Minla cyanouroptera |
| Blue-winged Mountain Tanager | Anisognathus somptuosus |
| Blue-winged Parakeet | Psittacula columboides |
| Blue-winged Parrot | Neophema chrysostoma |
| Blue-winged Parrotlet | Forpus passerinus |
| Blue-winged Racquet-tail | Prioniturus discurus verticalis |
| Blue-winged Teal | Anas discors |
| Blue-winged Warbler | Vermivora pinus |
| Blyth’s Parakeet | Psittacula caniceps |
| Blyth’s Tragopan | Tragopan blythi |
| Boat-billed Heron | Cochlearius cochlearius |
| Boat-tailed Grackle | Quiscalus major |
| Bobolink | Dolichonyx oryzivorus |
| Bodin’s Amazon | Amazona festiva bodini |
| Boehm’s Barbet | Trachyphonus darnaudii |
| Bohemian Waxwing | Bombycilla garrulus |
| Bohemian Waxwing | Bombycilla garrulus |
| Bolivian Blue-fronted Amazon | Amazona aestiva xanthopteryx |
| Bonaire Conure | Aratinga pertinax xanthogenia |
| Bonaparte’s Gull | Larus philadelphia |
| Bonellis Eagle | Hieraaetus fasciatus |
| Boobook Owl | Ninox novaeseelandiae |
| Boreal Chickadee | Poecile hudsonicus |
| Boreal Owl | Aegolius funereus |
| Boreal Owl | Aegolius funereus |
| Botteri’s Sparrow | Aimophila botterii |
| Bourke’s Parakeet | Neophema bourkii |
| Brambling | Fringilla montifringilla |
| Brandt’s Cormorant | Phalacrocorax penicillatus |
| Brant | Branta bernicla |
| Brazilian Cardinal | Paroaria coronata |
| Brazilian Grey-breasted Conure | Pyrrhura leucotis griseipectus |
| Brent Goose | Branta bernicla |
| Brewer’s Blackbird | Euphagus cyanocephalus |
| Brewer’s Sparrow | Spizella breweri |
| Bridled Quail-Dove | Geotrygon mystacea |
| Bridled Tern | Sterna anaethetus |
| Bridled Titmouse | Baeolophus wollweberi |
| bridled White-eye | Zosterops conspicillatus conspicillatus |
| Bristle-thighed Curlew | Numenius tahitiensis |
| Broad-billed Hummingbird | Cynanthus latirostris |
| Broad-billed Sandpiper | Limicola falcinellus |
| Broad-tailed Hawk | Buteo jamaicensis |
| Broad-tailed Hummingbird | Selasphorus platycercus |
| Broad-winged Hawk | Buteo platypterus |
| Broad-winged Hawk | Buteo platypterus |
| Bronzed Cowbird | Molothrus aeneus |
| Bronze-winged Pionus | Pionus chalcopterus |
| Brotogeris Parakeet | Brotogeris |
| Brown Booby | Sula leucogaster |
| Brown Creeper | Certhia americana |
| Brown Fish Owl | Ketupa zeylonensis |
| Brown Jay | Cyanocorax morio |
| Brown Kiwi | Apterix australis |
| Brown Lory | Chalcopsitta atra duivenbodei |
| Brown Noddy | Anous stolidus |
| Brown Parrot | Poicephalus meyeri meyeri |
| brown Pelican | Pelecanus occidentalis |
| Brown Pelican | Pelecanus occidentalis occidentalis |
| Brown Pelican | Pelecanus occidentalis |
| Brown Shrike | Lanius cristatus |
| Brown Thrasher | Toxostoma rufum |
| Brown Violet-Ear | Colibri delphinae |
| Brown Wood Owl | Strix leptogrammica |
| Brown-backed Conure | Pyrrhura calliptera |
| Brown-backed Parrotlet | Touit melanonotus |
| Brown-breasted Conure | Pyrrhura calliptera |
| Brown-capped Rosy-Finch | Leucosticte australis |
| Brown-chested Martin | Progne tapera |
| Brown-crested Flycatcher | Myiarchus tyrannulus |
| Brown-eared Conure | Aratinga pertinax ocularis |
| Brown-headed Cowbird | Molothrus ater |
| Brown-headed Cowbird | Molothrus ater |
| Brown-headed Nuthatch | Sitta pusilla |
| Brown-headed Parrot | Poicephalus cryptoxanthus |
| Brown-hooded Parrot | Pionopsitta haematotis haematotis |
| Brown-necked Parrot | Poicephalus fuscicollis fuscicollis |
| Brown-necked Raven | Corvus ruficollic |
| Brown’s Rosella | Platycercus venustus |
| Brown-throated Conure | Aratinga pertinax aeruginosa |
| Bruce’s Green Pigeon | Treron waalia |
| Budgerigar | Melopsittacus undulatus |
| Budgerigar | Melopsittacus undulatus |
| Buffalo Weaver | |
| Buff-bellied Hummingbird | Amazilia yucatanensis |
| Buff-breasted Flycatcher | Empidonax fulvifrons |
| Buff-breasted Sandpiper | Tryngites subruficollis |
| Buff-collared Nightjar | Caprimulgus ridgwayi |
| Buff-crested Bustard | Eupodotis gindiana |
| Bufflehead | Bucephala albeola |
| Buffon’s Macaw | Ara ambigua ambigua |
| Buffon’s Touraco | Tauraco corythaix buffoni |
| Buffon’s/Blue & Gold Macaw | Ara ambigua ambigua/ararauna |
| Buller’s Shearwater | Puffinus bulleri |
| BullFinch | Aythya nyroca |
| Bullock’s Oriole | Icterus bullockii |
| Bumblebee Hummingbird | Atthis heloisa |
| Burmese Turtle-Dove | Streptopelia orientalis |
| Burrowing Conure | Cyanoliseus patagonus |
| Burrowing Owl | Speotyto cunicularia |
| Burrowing Owl | Athene cunicularia |
| Buru Island King Parrot | Alisterus amboinensis buruensis |
| Buru Lorikeet | Charmosyna toxopei |
| Buru Racquet-tail | Prioniturus platurus mada |
| Buru Red Lory | Eos bornea cyanonothus |
| Bushtit | Psaltriparus minimus |
| Bushy-crested Jay | Cyanocorax melanocyaneus |
| Caatinga Conure | Aratinga pertinax cactorum |
| Cabot’s Tragopan | Tragopan caboti |
| Cactus Conure | Aratinga cactorum |
| cactus ferruginous Pygmy-owl | Glaucidium brasilianum cactorum |
| Cactus Wren | Campylorhynchus brunneicapillus |
| Cactus Wren | Campylorhynchus brunneicapillus |
| Cahow | Pterodroma cahow |
| Caica Parrot | Pionopsitta caica |
| Calico Macaw | Ara militaris militaris/chloroptera |
| California clapper Rail | Rallus longirostris obsoletus |
| California Condor | Gymnogyps californianus |
| California Condor | Gymnogyps californianus |
| California Gnatcatcher | Polioptila californica |
| California Gull | Larus californicus |
| California least Tern | Sterna antillarum browni |
| California Quail | Callipepla californica |
| California Thrasher | Toxostoma redivivum |
| California Towhee | Pipilo crissalis |
| Calliope Hummingbird | Stellula calliope |
| Caloshua Macaw | Ara ararauna/Anodorhynchus hyacinthinus |
| Camelot Macaw | Ara macao/Ara macao/ararauna |
| Cameroon African Grey | Psittacus erithacus princeps |
| Canada Goose | Branta canadensis |
| Canada Warbler | Wilsonia canadensis |
| Canadian Goose | Branta canadensis |
| Canadian Great Horned Owl | Bubo virginianus |
| Canary-winged Parakeet | Brotogeris versicolurus chiriri |
| Caninde Macaw | Ara glaucogularis |
| Canvasback | Aythya valisineria |
| Canvas-backed Duck | Aythya valisineria |
| Canyon Towhee | Pipilo fuscus |
| Canyon Wren | Catherpes mexicanus |
| Cape Barren Goose | Cereopsis novaehollandiae |
| Cape May Warbler | Dendroica tigrina |
| Cape Parrot | Poicephalus robustus robustus |
| Cape Sable seaside Sparrow | Ammodramus maritimus mirabilis |
| Cardinal Lory | Chalcopsitta cardinalis |
| Caribbean Conure | Aratinga pertinax pertinax |
| Caribbean Elaenia | Elaenia martinica |
| Caribbean Flamingo | Phoenicopterus ruber ruber |
| Carmine Bee-eater | Merops nubicus nubicus |
| Carolina Chickadee | Poecile carolinensis |
| Carolina Parakeet | Conuropsis carolinensis |
| Carolina Wren | Thryothorus ludovicianus |
| Carribean Parakeet | Aratinga pertinax pertinax |
| Carriker’s Conure | Aratinga wagleri minor |
| Carrion Crow | Corvus corone |
| Caspian Tern | Sterna caspia |
| Caspian Tern | Sterna caspia |
| Cassin’s Auklet | Ptychoramphus aleuticus |
| Cassin’s Finch | Carpodacus cassinii |
| Cassin’s Kingbird | Tyrannus vociferans |
| Cassin’s Sparrow | Aimophila cassinii |
| Cassin’s Vireo | Vireo cassinii |
| Catalina Macaw | Ara macao/ararauna |
| Cattle Egret | Bubulcus ibis |
| Cattle Egret | Bubulcus ibis |
| Cave Swallow | Petrochelidon fulva |
| Cedar Waxwing | Bombycilla cedrorum |
| Celebes Hanging Parrot | Loriculus stigmatus stigmatus |
| Celebes Quail-Dove | Gallicolumba tristigmata |
| Celestial Parrotlet | Forpus coelestis |
| Ceram Lory | Eos semilarvata |
| Cerulean Warbler | Dendroica cerulea |
| Ceylon Hanging Parrot | Loriculus beryllinus beryllinus |
| Chaco Chacalaca | Ortalis canicollis |
| Chaffinch | Fringilla coelebs |
| Channel-billed Toucan | Ramphastos dicolorus vitellinus |
| Channel-billed Toucan | Ramphastos vitellinus vitellinus |
| Chapman’s Conure | Aratinga mitrata alticola |
| Chapman’s Mealy Amazon | Amazona farinosa chapmani |
| Chattering Lory | Lorius garrulus garrulus |
| Cherry-headed Conure | Aratinga erythrogenys |
| Cherry-headed/Mitred Conure | Aratinga erythrogenys/mitrata mitrata |
| Chestnut Manakin | Lonchura malacca |
| Chestnut-backed Chickadee | Poecile rufescens |
| Chestnut-backed Scimitar Babbler | Pomatorhinus montanus |
| Chestnut-backed Thrush | Zoothera dohertyi |
| Chestnut-bellied Imperial-Pigeon | Ducula brenchleyi |
| Chestnut-breasted Manakin | Lonchura castaneothorax |
| Chestnut-capped Thrush | Garrulax mitratus |
| Chestnut-collared Longspur | Calcarius ornatus |
| Chestnut-eared Aracari | Pteroglossus aracari castanotis |
| Chestnut-fronted Macaw | Ara severa severa |
| Chestnut-mandibled Toucan | Ramphastos swainsonii |
| Chestnut-sided Warbler | Dendroica pensylvanica |
| Chicken | Gallus gallus gallus |
| Chihuahuan Raven | Corvus cryptoleucus |
| Chilean Flamingo | Phoenicopterus ruber chilensis |
| Chilean Tinamou | Nothoprocta perdicaria perdicaria |
| Chimney Swift | Chaetura pelagica |
| Chinese Babax | Babax lanceolatus |
| Chinese Egret | Egretta eulophotes |
| Chinese Eurasian Eagle Owl | Bubo bubo swinhoei |
| Chinese Goose | Anser cygnoides |
| Chinstrap Penguin | Pygoscelis antarctica |
| Chipping Sparrow | Spizella passerina |
| Chiriqui Conure | Pyrrhura hoffmani gaudens |
| Choco Toucan | Ramphastos dicolorus brevis |
| Chopi Blackbird | Gnorimopsar chopi |
| Chuck-will’s-widow | Caprimulgus carolinensis |
| Chukar | Alectoris chukar |
| Cinereous Finch | Piezorhina cinerea |
| Cinereous Vulture | Aegypius monachus |
| Cinnamon Hummingbird | Amazilia rutila |
| Cinnamon Teal | Anas cyanoptera |
| Cinnamon Teal | Anas cyanoptera |
| Citrine Wagtail | Motacilla citreola |
| Citron Throated Toucan | Ramphastos dicolorus citreolaemus |
| Citron-crested Cockatoo | Cacatua sulphurea citrino-cristata |
| Clapper Rail | Rallus longirostris |
| Clark’s Grebe | Aechmophorus clarkii |
| Clark’s Nutcracker | Nucifraga columbiana |
| Clay-colored Robin | Turdus grayi |
| Clay-colored Sparrow | Spizella pallida |
| Cliff Swallow | Petrochelidon pyrrhonota |
| Cloncurry Parakeet | Barnardius barnardi macgillivrayi |
| coastal California Gnatcatcher | Polioptila californica californica |
| Cobalt-winged Parakeet | Brotogeris chrysopterus cyanoptera |
| Cockatiel | Nymphicus hollandicus |
| Colima Warbler | Vermivora crissalis |
| Collared Aracari | Pteroglossus torquatus torquatus |
| Collared Finchbill | Spizixos semitorques |
| Collared Forest-Falcon | Micrastur semitorquatus |
| Collared Lory | Phigys solitarius |
| Collared Plover | Charadrius collaris |
| Collared Scops Owl | Otus bakkamoena lempiji |
| Collie’s Magpie Jay | Calocitta formosa colliei |
| Common Babbler | Turdoides caudatus |
| Common Black-Hawk | Buteogallus anthracinus |
| Common Buzzard | Buteo buteo |
| Common Caracara | Polyborus plancus |
| Common Chaffinch | Fringilla coelebs |
| Common Chough | Pyrrhocorax pyrrhocorax |
| Common Crane | Grus grus |
| Common Crane | Grus grus |
| Common Cuckoo | Cuculus canorus |
| Common Eider | Somateria mollissima |
| Common Goldeneye | Bucephala clangula |
| Common Grackle | Quiscalus quiscula |
| Common Greenshank | Tringa nebularia |
| Common Ground-Dove | Columbina passerina |
| Common Hoopoe | Upupa epops epops |
| Common House-Martin | Delichon urbica |
| Common Loon | Gavia immer |
| Common Merganser | Mergus merganser |
| Common Moorhen | Gallinula chloropus |
| Common Murre | Uria aalge |
| Common Murre | Uria aalge |
| Common Nighthawk | Chordeiles minor |
| Common Parrotlet | Forpus passerinus |
| Common Pauraque | Nyctidromus albicollis |
| Common Peafowl | Pavo cristatus |
| Common Piping Guan | Pipile pipile pipile |
| Common Pochard | Aythya ferina |
| Common Poorwill | Phalaenoptilus nuttallii |
| Common Puffin | Fratercula artica artica |
| Common Raven | Corvus corax |
| Common Raven | Corvus corax |
| Common Redpoll | Carduelis flammea |
| Common Ringed Plover | Charadrius hiaticula |
| Common Rosefinch | Carpodacus erythrinus |
| Common Sandpiper | Actitis hypoleucos |
| Common Snipe | Gallinago gallinago |
| Common Starling | Sturnus vulgaris vulgaris |
| Common Swift | Apus apus |
| Common Tern | Sterna hirundo |
| Common Tern | Sterna hirundo |
| Common Trumpeter | Psophia crepitans crepitans |
| Common Wood-Pigeon | Columba palumbus |
| Common Yellowthroat | Geothlypis trichas |
| Congo African Grey | Psittacus erithacus erithacus |
| Connecticut Warbler | Oporornis agilis |
| Cook’s Petrel | Pterodroma cookii |
| Cooper’s Hawk | Accipiter cooperii |
| Cooper’s Hawk | Accipiter cooperii |
| Coral-billed Pionus | Pionus sordidus corallinus |
| Cordilleran Conure | Aratinga wagleri frontata |
| Cordilleran Flycatcher | Empidonax occidentalis |
| Corn Crake | Crex crex |
| Corn Crake | Crex crex |
| Cornelia’s Eclectus Parrot | Eclectus roratus cornelia |
| Cory’s Shearwater | Calonectris diomedea |
| Costa Rica Mealy Amazon | Amazona farinosa virenticeps |
| Costa’s Hummingbird | Calypte costae |
| Couch’s Kingbird | Tyrannus couchii |
| Crane Hawk | Geranospiza caerulescens |
| Craveri’s Murrelet | Synthliboramphus craveri |
| Crescent-chested Warbler | Parula superciliosa |
| Crested Auklet | Aethia cristatella |
| Crested Auklet | Aethia cristatella |
| Crested Caracara | Polyborus plancus |
| Crested Caracara | Caracara plancus |
| Crested Coua | Coua cristata |
| Crested Cuckoo-Dove | Reinwardtoena crassirostris |
| Crested Guan | Penelope obscura purpurascens |
| Crested Guineafowl | Guttera pucherani edouardi |
| Crested Guineafowl | Guttera puchetani |
| crested Honeycreeper | Palmeria dolei |
| Crested Myna | Acridotheres cristatellus |
| Crested Oropendola | Psarocolius decumanus |
| Crested Owl | Lophostrix cristata |
| Crested Screamer | Chauna torquata |
| Crested Tinamou | Eudromia elegans |
| Crimson Rosella | Platycercus elegans elegans |
| Crimson-bellied Conure | Pyrrhura rhodogaster |
| Crimson-breasted Shrike | Laniarius atrococcineus |
| Crimson-collared Grosbeak | Rhodothraupis celaeno |
| Crimson-fronted Conure | Aratinga leucophthalmus finschi |
| Crimson-winged Parakeet | Aprosmictus erythropterus |
| Crissal Thrasher | Toxostoma crissale |
| Crowned Crane | Balearica pavonina |
| Crowned Hornbill | Tockus alboterminatus |
| Crowned Plover | Vanellus coronatus |
| Cuban Amazon | Amazona leucocephala |
| Cuban Bullfinch | Melopyrrha nigra |
| Cuban Conure | Aratinga euops euops |
| Cuban Martin | Progne cryptoleuca |
| Curl-crested Aracari | Pteroglossus beauharnaesii |
| Curlew Sandpiper | Calidris ferruginea |
| Curve-billed Thrasher | Toxostoma curvirostre |
| Cuvier’s Toucan | Ramphastos tucanus cuvieri |
| Dalmatian Pelican | Pelecanus crispus |
| Dark-eyed Junco | Junco hyemalis |
| Dark-throated Lory | Trichoglossus haematodus nigrogularis |
| D’Arnaud’s Barbet | Trachyphonus darnaudii |
| Demerara Conure | Pyrrhura egregia egregia |
| Demoiselle Crane | Anthropoides virgo |
| Deplanche’s Lorikeet | Trichoglossus haematodus deplanchii |
| Derbyan Parakeet | Psittacula derbiana |
| Desmarest’s Fig Parrot | Psittaculirostris desmarestii |
| Diademed Amazon | Amazona autumnalis diadema |
| Diamond Dove | Geopelia cuneata |
| Diamond Sparrow | Emblema guttata |
| Dickcissel | Spiza americana |
| Dollar Bird | Eurystomus orientalis |
| Domestic Pigeon | Columba livia domestica |
| Dominican Amazon | Amazona arausiaca |
| Double Yellow-headed Amazon | Amazona oratrix oratrix |
| Double-crested Cormorant | Phalacrocorax auritus |
| Double-crested Cormorant | Phalacrocorax auritus |
| Double-eyed Fig Parrot | Cyclopsitta diophthalma |
| Double-striped Thick-knee | Burhinus bistriatus |
| Double-tooth Barbet | Lybius bidentatus |
| Dovekie | Alle alle |
| Downy Woodpecker | Picoides pubescens |
| Ducorps’s Cockatoo | Cacatua ducorpsii |
| Dufresne’s Amazon | Amazona brasiliensis dufresniana |
| Dumonti Mynah | Mino dumontii |
| Dunlin | Calidris alpina |
| Dunnock | Prunella modularis |
| Dusky Conure | Aratinga weddellii |
| Dusky Flycatcher | Empidonax oberholseri |
| Dusky Guan | Penelope obscura obscura |
| Dusky Lory | Pseudeos fuscata |
| Dusky Parrot | Pionus fuscus |
| Dusky Pionus | Pionus fuscus |
| Dusky Thrush | Turdus naumanni |
| Dusky Warbler | Phylloscopus fuscatus |
| Dusky-capped Flycatcher | Myiarchus tuberculifer |
| Dusky-headed Conure | Aratinga weddellii |
| Duyvenbode’s Lory | Chalcopsitta duivenbodei duivenbodei |
| Eared Grebe | Podiceps nigricollis |
| Eared Trogon | Euptilotis neoxenus |
| East African Crowned Crane | Balearica pavonina regulorum |
| Eastern Bluebird | Sialia sialis |
| Eastern Kingbird | Tyrannus tyrannus |
| Eastern Long-billed Corella | Cacatua tenuirostris tenuirostris |
| Eastern Meadowlark | Sturnella magna |
| Eastern Phoebe | Sayornis phoebe |
| Eastern Rosella | Platycercus eximius eximius |
| Eastern Screech Owl | Otus asio asio |
| Eastern Screech-Owl | Otus asio |
| Eastern Towhee | Pipilo erythrophthalmus |
| Eastern Wood-Pewee | Contopus virens |
| Echo Parakeet | Psittacula eques |
| Eclectus Parrot | Eclectus roratus |
| Edward’s Fig Parrot | Psittaculirostris edwardsii |
| Edward’s Lorikeet | Trichoglossus haematodus capistratus |
| Egyptian Goose | Alopochen aegyptiacus |
| Egyptian Plover | |
| Egyptian Vulture | Neophron percnopterus |
| El Oro Conure | Pyrrhura melanura orcesi |
| Elegant Parrot | Neophema elegans |
| Elegant Pitta | Pitta elegans |
| Elegant Tern | Sterna elegans |
| Elegant Trogon | Trogon elegans |
| Elegant-crested Tinamou | Eudromia elegans |
| Eleonora Cockatoo | Cacatua galerita eleonora |
| Eleonora’s Falcon | Falco eleonorae |
| Elf Owl | Micrathene whitneyi |
| Emerald Lorikeet | Neopsittacus pullicauda |
| Emerald Lory | Neopsittacus pullicauda |
| Emerald Starling | Lamprotornis iris |
| Emerald Toucanet | Aulacorhynchus prasinus |
| Emerald-spotted Wood-Dove | Turtur chalcospilos |
| Emma’s Conure | Pyrrhura leucotis emma |
| Emperor Goose | Chen canagica |
| Emperor Penguin | Aptenodytes forsteri |
| Eskimo Curlew | Numenius borealis |
| Eskimo Curlew | Numenius borealis |
| Eurasian Blackbird | Turdus merula |
| Eurasian Bullfinch | Pyrrhula pyrrhula |
| Eurasian Buzzard | Buteo buteo buteo |
| Eurasian Collared-Dove | Streptopelia decaocto |
| Eurasian Coot | Fulica atra |
| Eurasian Curlew | Numenius arquata |
| Eurasian Curlew | Numenius arquata |
| Eurasian Dotterel | Charadrius morinellus |
| Eurasian Eagle Owl | Bubo bubo bubo |
| Eurasian Griffon | Gyps fulvus |
| Eurasian Hobby | Falco subbuteo |
| Eurasian Hoopoe | Upupa epops |
| Eurasian Jackdaw | Corvus monedula |
| Eurasian Jay | Garrulus glandarius |
| Eurasian Kestrel | Falco tinnunculus |
| Eurasian Kestrel | Falco tinnunculus |
| Eurasian Oystercatcher | Haematopus ostralegus |
| Eurasian Pygmy Owl | Glaucidium passerinum |
| Eurasian Scops Owl | Otus scops scops |
| Eurasian Siskin | Carduelis spinus |
| Eurasian Spoonbill | Platalea leucorodia leucorodia |
| Eurasian Tree Sparrow | Passer montanus |
| Eurasian Wigeon | Anas penelope |
| Eurasian Woodcock | Scolopax rusticola |
| Eurasian Wryneck | Jynx torquilla |
| European Black Vulture | Aegypius monachus |
| European Eagle Owl | Bubo bubo |
| European Flamingo | Phoenicopterus ruber roseus |
| European Gold Finch | Carduelis carduelis |
| European Golden-Plover | Pluvialis apricaria |
| European Goshawk | Accipiter gentilis gentilis |
| European Robin | Erithacus rubecula |
| European Roller | Coracias gariculus |
| European Scops Owl | Otus scops scops |
| European Sparrow Hawk | Accipiter nisus |
| European Starling | Sturnus vulgaris |
| European Stork | Ciconia ciconia |
| European Storm-Petrel | Hydrobates pelagicus |
| European Turtle-Dove | Streptopelia turtur |
| European Turtle-Dove | Streptopelia turtur |
| European Wood-Pigeon | Columba palumbas |
| Evening Grosbeak | Coccothraustes vespertinus |
| Everglade snail Kite | Rostrhamus sociabilis plumbeus |
| Eyebrowed Thrush | Turdus obscurus |
| Eyton’s Tree Duck | Dendrocygna eytoni |
| Fairy Bluebird | Irena puella |
| Fairy Lorikeet | Charmosyna pulchella pulchella |
| Falcated Duck | Anas falcata |
| Fan-tailed Warbler | Euthlypis lachrymosa |
| Far Eastern Curlew | Numenius madagascariensis |
| Ferruginous Hawk | Buteo regalis |
| Ferruginous Hawk | Buteo regalis |
| Ferruginous Pygmy Owl | Glaucidium brasilianum |
| Ferruginous Pygmy-Owl | Glaucidium brasilianum |
| Festive Amazon | Amazona festiva festiva |
| Field Sparrow | Spizella pusilla |
| Fieldfare | Turdus pilaris |
| Fieldfare | Turdus pilaris |
| Fiery-shouldered Conure | Pyrrhura egregia |
| Finsch’s Amazon | Amazona finschi finschi |
| Finsch’s Conure | Aratinga finschi |
| Finsch’s Parakeet | Psittacula finschii |
| Fire-tufted Barbet | Psilopogon pyrolophus |
| Fischer’s Lovebird | Agapornis personata fischeri |
| Fischer’s Touraco | Tauraco fischeri |
| Fish Crow | Corvus ossifragus |
| Fishing Owl | Scotopelia |
| Five-colored Munia | Lonchura quinticolor |
| Five-striped Sparrow | Aimophila quinquestriata |
| Flame Macaw | Ara macao/ararauna/Ara chloroptera |
| Flame-capped Conure | Aratinga auricapilla auricapilla |
| Flame-colored Tanager | Piranga bidentata |
| Flame-winged Conure | Pyrrhura calliptera |
| Flammulated Owl | Otus flammeolus |
| Flesh-footed Shearwater | Puffinus carneipes |
| Florida grasshopper Sparrow | Ammodramus savannarum floridanus |
| Florida scrub Jay | Aphelocoma coerulescens |
| Florida Scrub-Jay | Aphelocoma coerulescens |
| Fork-tailed Flycatcher | Tyrannus savana |
| Fork-tailed Storm-Petrel | Oceanodroma furcata |
| Fork-tailed Swift | Apus pacificus |
| Forsten’s Lorikeet | Trichoglossus haematodus forsteni |
| Forster’s Caracara | Phalcoboenus australis |
| Forster’s Tern | Sterna forsteri |
| Forster’s Tern | Sterna forsteri |
| Fox Sparrow | Passerella iliaca |
| Franklin’s Gull | Larus pipixcan |
| Fulvous Whistling Duck | Dendrocygna bicolor |
| Fulvous Whistling-Duck | Dendrocygna bicolor |
