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yellow air sac
Albatrosses
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Bobolink
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Empidonax species
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Gulls
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Loons (Gaviidae)
Lories, Lovebirds, and Australasian Parrots (Psittaculidae)
Lovebirds
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Medium Tropical Flycatchers
Melanerpes Woodpeckers
Mimids (Mimidae)
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Mockingbirds
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Myiarchus species
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Nuthatches (Sittidae)
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Olive Warbler (Peucedramidae)
Orioles
Oropendolas
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Owls
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Rails
Rails, Gallinules, and Coots (Rallidae)
Ravens
Sandgrouses (Pteroclidae)
Sandpipers
Sandpipers, Phalaropes, and Allies (Scolopacidae)
Sapsuckers
Seedeaters
Shearwaters
Shearwaters and Petrels
Shearwaters and Petrels (Procellariidae)
Shrikes (Laniidae)
Silky Flycatchers (Ptilogonatidae)
Skimmers
Skuas and Jaegers (Stercorariidae)
Small Tropical Flycatchers
Snipes and Woodcocks
Sparrows
Spindalids (Spindalidae)
Starlings (Sturnidae)
Stilts and Avocets (Recurvirostridae)
Storks (Ciconiidae)
Storm-Petrels
Storm-Petrels (Hydrobatidae)
Swallows (Hirundinidae)
Swans
Swifts (Apodidae)
Sylviid Warblers (Sylviidae)
Tanagers
Tanagers (Thraupidae)
Terns
Thrashers
Thrushes (Turdidae)
Titmice
Towhees
Trogons (Trogonidae)
Tropical Tanagers
Tropicbirds (Phaethontidae)
Turnstones
Typical Owls (Strigidae)
Tyrant Flycatchers (Tyrannidae)
Uncategorized
Verdin (Remizidae)
Vireos
Vireos (Vireonidae)
Wagtails
Wagtails and Pipits (Motacillidae)
Waxbills (Estrildidae)
Waxwings (Bombycillidae)
White-eyes (Zosteropidae)
Wood-Warblers (Parulidae)
Woodpeckers and Allies (Picidae)
Wrens (Troglodytidae)
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Auks, Murres, and Puffins (Alcidae)
Gulls, Terns, and Skimmers (Laridae)
Skimmers
Gulls
Terns
Tropicbirds (Phaethontidae)
Loons (Gaviidae)
Albatrosses (Diomedeidae)
Storm-Petrels (Hydrobatidae)
Shearwaters and Petrels (Procellariidae)
Petrels
Shearwaters
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Eagles
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Kites
Barn Owl (Tytonidae)
Typical Owls (Strigidae)
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Kingfishers (Alcedinidae)
Woodpeckers and Allies (Picidae)
Melanerpes Woodpeckers
Picoides Woodpeckers
Sapsuckers
Flickers
Pileated Woodpecker
Caracaras and Falcons (Falconidae)
Lories, Lovebirds, and Australasian Parrots (Psittaculidae)
Lovebirds
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Becards, Tityras, and Allies (Tityridae)
Tyrant Flycatchers (Tyrannidae)
Empidonax species
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Myiarchus species
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placement uncertain (incertae sedis)
Shrikes (Laniidae)
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Crows
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Magpies
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Chickadees and Titmice (Paridae)
Titmice
Chickadees
Verdin (Remizidae)
Bushtits (Aegithalidae)
Nuthatches (Sittidae)
Creepers (Certhiidae)
Wrens (Troglodytidae)
Gnatcatchers and Gnatwrens (Polioptillidae)
Dippers (Cincllidae)
Bulbuls (Pycnonotidae)
Kinglets (Regulidae)
Leaf Warblers (Phylloscopidae)
Sylviid Warblers (Sylviidae)
White-eyes (Zosteropidae)
Old World Flycatchers (Muscicapidae)
Thrushes (Turdidae)
Mimids (Mimidae)
Mockingbirds
Catbirds
Thrashers
Starlings (Sturnidae)
Waxwings (Bombycillidae)
Silky Flycatchers (Ptilogonatidae)
Olive Warbler (Peucedramidae)
Waxbills (Estrildidae)
Old World Sparrows (Passeridae)
Wagtails and Pipits (Motacillidae)
Wagtails
Pipits
Fringilline and Cardueline Finches (Fringillidae)
Longspurs and Snow Buntings (Calcariidae)
Passerellids (Passerellidae)
Towhees
Sparrows
Juncos
Icteriids (Icteriidae)
Spindalids (Spindalidae)
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Grackles
Bobolink
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Orioles
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Meadowlarks
Wood-Warblers (Parulidae)
Cardinals, Piranga Tanagers and Allies (Cardinalidae)
Buntings
Cardinals
Dickcissel
Grosbeaks
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Tanagers (Thraupidae)
Seedeaters
Grassquits
Tropical Tanagers
Cardinals
Bananaquits
Families by Alphabet
Select Category
Albatrosses (Diomedeidae)
Auks, Murres, and Puffins (Alcidae)
Australasian Parrots
Bananaquits
Barn Owl (Tytonidae)
Becards, Tityras, and Allies (Tityridae)
Bitterns
Bitterns, Herons, and Allies (Ardeidae)
Blackbirds
Blackbirds (Icteridae)
Bobolink
Boobies and Gannets (Sulidae)
Bulbuls (Pycnonotidae)
Buntings
Bush-Warblers (Cettidae)
Bushtits (Aegithalidae)
Caracaras and Falcons (Falconidae)
Cardinals
Cardinals
Cardinals, Piranga Tanagers and Allies (Cardinalidae)
Catbirds
Chickadees
Chickadees and Titmice (Paridae)
Coots
Cormorants (Phalacrocoracidae)
Cowbirds
Cranes (Gruidae)
Creepers (Certhiidae)
Crows
Cuckoos, Roadrunners, and Anis (Cuculidae)
Curlews
Currassows and Guans (Cracidae)
Darters (Anhingidae)
Dickcissel
Dippers (Cincllidae)
Ducks
Ducks, Geese, and Swans (Anatidae)
Eagles
Empidonax species
Flamingos (Phoenicopteridae)
Flickers
Frigatebirds (Fregatidae)
Fringilline and Cardueline Finches (Fringillidae)
Gallinules
Geese
Gnatcatchers and Gnatwrens (Polioptillidae)
Goatsuckers (Caprimulgidae)
Godwits
Grackles
Grassquits
Grebes (Podicipedidae)
Grosbeaks
Guans (Family Cracidae)
Gulls
Gulls, Terns, and Skimmers (Laridae)
Harriers
Hawks – Accipiters
Hawks – Buteos
Hawks, Kites, Eagles, and Allies (Accipitridae)
Herons
Hummingbirds (Trochiidae)
Ibises and Spoonbills (Threskiomithidae)
Icteriids (Icteriidae)
Jacanas (Jacanidae)
Jays
Jays and Crows (Corvidae)
Juncos
Kingbirds
Kingfishers (Alcedinidae)
Kinglets (Regulidae)
Kites
Lapwings
Lapwings and Plovers (Charadriidae)
Large Tropical Flycatchers
Larks (Alaudidae)
Leaf Warblers (Phylloscopidae)
Limpkins (Aramidae)
Long-tailed Flycatchers
Longspurs and Snow Buntings (Calcariidae)
Loons (Gaviidae)
Lories
Lories, Lovebirds, and Australasian Parrots (Psittaculidae)
Lovebirds
Macaws
Magpies
Meadowlarks
Medium Tropical Flycatchers
Melanerpes Woodpeckers
Mimids (Mimidae)
Mockingbirds
Monarch Flycatchers (Monarchidae)
Myiarchus species
New World Quail (Odontophoridae)
New World Vultures (Cathartidae)
Nighthawks
Nightjars
North America
Nuthatches (Sittidae)
Old World Flycatchers (Muscicapidae)
Old World Sparrows (Passeridae)
Olive Warbler (Peucedramidae)
Orioles
Ospreys (Pandionidae)
Oystercatchers (Haematopodidae)
Parakeets
Parakeets, Macaws, and Parrots (Psittacidae)
Parrots
Partridges, Grouse, Turkeys, and Old World Quail (Phasianidae)
Passerellids (Passerellidae)
Pelicans (Pelecanidae)
Petrels
Pewees
Phalaropes
Phoebes
Picoides Woodpeckers
Pigeons and Doves (Columbidae)
Pileated Woodpecker
Pipits
Piranga Tanagers
placement uncertain (incertae sedis)
Plovers
Rails
Rails, Gallinules, and Coots (Rallidae)
Ravens
Sandgrouses (Pteroclidae)
Sandpipers
Sandpipers, Phalaropes, and Allies (Scolopacidae)
Sapsuckers
Seedeaters
Shearwaters
Shearwaters and Petrels (Procellariidae)
Shrikes (Laniidae)
Silky Flycatchers (Ptilogonatidae)
Skimmers
Skuas and Jaegers (Stercorariidae)
Small Tropical Flycatchers
Snipes and Woodcocks
Sparrows
Spindalids (Spindalidae)
Starlings (Sturnidae)
Stilts and Avocets (Recurvirostridae)
Storks (Ciconiidae)
Storm-Petrels (Hydrobatidae)
Swallows (Hirundinidae)
Swans
Swifts (Apodidae)
Sylviid Warblers (Sylviidae)
Tanagers (Thraupidae)
Terns
Thrashers
Thrushes (Turdidae)
Titmice
Towhees
Trogons (Trogonidae)
Tropical Tanagers
Tropicbirds (Phaethontidae)
Turnstones
Typical Owls (Strigidae)
Tyrant Flycatchers (Tyrannidae)
Verdin (Remizidae)
Vireos (Vireonidae)
Wagtails
Wagtails and Pipits (Motacillidae)
Waxbills (Estrildidae)
Waxwings (Bombycillidae)
White-eyes (Zosteropidae)
Wood-Warblers (Parulidae)
Woodpeckers and Allies (Picidae)
Wrens (Troglodytidae)
