ABA Code 1 Birds - 494 species
Red-throated Loon
Pacific Loon
Common Loon
Pied-billed Grebe
Horned Grebe
Red-necked Grebe
Eared Grebe
Western Grebe
Clark's Grebe
Sooty Shearwater
Northern Gannet
American White Pelican
Brown Pelican
Great Cormorant
Double-crested Cormorant
Neotropic Cormorant
Brandt's Cormorant
Pelagic Cormorant
Anhinga
Magnificent Frigatebird
American Bittern
Least Bittern
Great Blue Heron
Great Egret
Snowy Egret
Little Blue Heron
Tricolored Heron
Reddish Egret
Cattle Egret
Green Heron
Black-crowned Night-Heron
Yellow-crowned Night-Heron
White Ibis
Glossy Ibis
White-faced Ibis
Roseate Spoonbill
Wood Stork
Black Vulture
Turkey Vulture
California Condor
Black-bellied Whistling-Duck
Fulvous Whistling-Duck
Greater White-fronted Goose
Snow Goose
Ross's Goose
Canada Goose
Brant
Mute Swan
Trumpeter Swan
Tundra Swan
Wood Duck
Gadwall
Eurasian Wigeon
American Wigeon
American Black Duck
Mallard
Mottled Duck
Blue-winged Teal
Cinnamon Teal
Northern Shoveler
Northern Pintail
Green-winged Teal
Canvasback
Redhead
Ring-necked Duck
Greater Scaup
Lesser Scaup
King Eider
Common Eider
Harlequin Duck
Surf Scoter
White-winged Scoter
Black Scoter
Oldsquaw
Bufflehead
Common Goldeneye
Barrow's Goldeneye
Hooded Merganser
Red-breasted Merganser
Common Merganser
Ruddy Duck
Osprey
Swallow-tailed Kite
White-tailed Kite
Mississippi Kite
Bald Eagle
Northern Harrier
Sharp-shinned Hawk
Cooper's Hawk
Northern Goshawk
Gray Hawk
Harris's Hawk
Red-shouldered Hawk
Broad-winged Hawk
Swainson's Hawk
Red-tailed Hawk
Ferruginous Hawk
Rough-legged Hawk
Golden Eagle
American Kestrel
Prairie Falcon
Gray Partridge
Chukar
Ring-necked Pheasant
Ruffed Grouse
Blue Grouse
Willow Ptarmigan
Rock Ptarmigan
Wild Turkey
Northern Bobwhite
Scaled Quail
Gambel's Quail
California Quail
Virginia Rail
Sora
Purple Gallinule
Common Moorhen
American Coot
Sandhill Crane
Black-bellied Plover
Pacific Golden-Plover
American Golden-Plover
Snowy Plover
Wilson's Plover
Semipalmated Plover
Piping Plover
Killdeer
American Oystercatcher
Black Oystercatcher
Black-necked Stilt
American Avocet
Greater Yellowlegs
Lesser Yellowlegs
Solitary Sandpiper
Willet
Wandering Tattler
Spotted Sandpiper
Upland Sandpiper
Whimbrel
Long-billed Curlew
Hudsonian Godwit
Marbled Godwit
Ruddy Turnstone
Black Turnstone
Surfbird
Red Knot
Sanderling
Semipalmated Sandpiper
Western Sandpiper
Least Sandpiper
White-rumped Sandpiper
Baird's Sandpiper
Pectoral Sandpiper
Purple Sandpiper
Rock Sandpiper
Dunlin
Stilt Sandpiper
Buff-breasted Sandpiper
Short-billed Dowitcher
Long-billed Dowitcher
Common Snipe
American Woodcock
Wilson's Phalarope
Red-necked Phalarope
Laughing Gull
Franklin's Gull
Black-headed Gull
Bonaparte's Gull
Heermann's Gull
Black-tailed Gull
Mew Gull
Ring-billed Gull
California Gull
Herring Gull
Western Gull
Glaucous-winged Gull
Glaucous Gull
Great Black-backed Gull
Black-legged Kittiwake
Gull-billed Tern
Caspian Tern
Royal Tern
Sandwich Tern
Common Tern
Arctic Tern
Forster's Tern
Least Tern
Whiskered Tern
Black Tern
Black Skimmer
Common Murre
Pigeon Guillemot
Marbled Murrelet
Long-billed Murrelet
Rhinoceros Auklet
Tufted Puffin
Rock Dove
White-crowned Pigeon
Band-tailed Pigeon
Eurasian Collared-Dove
Spotted Dove
White-winged Dove
Mourning Dove
Inca Dove
Common Ground-Dove
Monk Parakeet
Carolina Parakeet
Black-billed Cuckoo
Yellow-billed Cuckoo
Greater Roadrunner
Great Horned Owl
Burrowing Owl
Barred Owl
Lesser Nighthawk
Common Nighthawk
Chimney Swift
Vaux's Swift
White-throated Swift
Ruby-throated Hummingbird
Black-chinned Hummingbird
Anna's Hummingbird
Costa's Hummingbird
Calliope Hummingbird
Broad-tailed Hummingbird
Rufous Hummingbird
Allen's Hummingbird
Belted Kingfisher
Lewis's Woodpecker
Red-headed Woodpecker
Acorn Woodpecker
Gila Woodpecker
Golden-fronted Woodpecker
Red-bellied Woodpecker
Yellow-bellied Sapsucker
Red-naped Sapsucker
Red-breasted Sapsucker
Williamson's Sapsucker
Ladder-backed Woodpecker
Nuttall's Woodpecker
Downy Woodpecker
Hairy Woodpecker
Strickland's Woodpecker
White-headed Woodpecker
Black-backed Woodpecker
Northern Flicker
Gilded Flicker
Pileated Woodpecker
Olive-sided Flycatcher
Western Wood-Pewee
Eastern Wood-Pewee
Yellow-bellied Flycatcher
Acadian Flycatcher
Alder Flycatcher
Willow Flycatcher
Least Flycatcher
Hammond's Flycatcher
Dusky Flycatcher
Gray Flycatcher
Pacific-slope Flycatcher
Cordilleran Flycatcher
Black Phoebe
Eastern Phoebe
Say's Phoebe
Vermilion Flycatcher
Ash-throated Flycatcher
Great Crested Flycatcher
Brown-crested Flycatcher
Cassin's Kingbird
Western Kingbird
Eastern Kingbird
Scissor-tailed Flycatcher
Northern Shrike
Loggerhead Shrike
White-eyed Vireo
Bell's Vireo
Gray Vireo
Blue-headed Vireo
Cassin's Vireo
Plumbeous Vireo
Yellow-throated Vireo
Hutton's Vireo
Warbling Vireo
Philadelphia Vireo
Red-eyed Vireo
Gray Jay
Steller's Jay
Blue Jay
Florida Scrub-Jay
Island Scrub-Jay
Western Scrub-Jay
Clark's Nutcracker
Black-billed Magpie
Yellow-billed Magpie
American Crow
Northwestern Crow
Fish Crow
Chihuahuan Raven
Common Raven
Horned Lark
Purple Martin
Tree Swallow
Violet-green Swallow
Northern Rough-winged Swallow
Bank Swallow
Barn Swallow
Cliff Swallow
Cave Swallow
Carolina Chickadee
Black-capped Chickadee
Mountain Chickadee
Chestnut-backed Chickadee
Boreal Chickadee
Bridled Titmouse
Oak Titmouse
Juniper Titmouse
Tufted Titmouse
Verdin
Bushtit
Red-breasted Nuthatch
White-breasted Nuthatch
Pygmy Nuthatch
Brown-headed Nuthatch
Brown Creeper
Cactus Wren
Rock Wren
Canyon Wren
Carolina Wren
Bewick's Wren
House Wren
Winter Wren
Sedge Wren
Marsh Wren
American Dipper
Golden-crowned Kinglet
Ruby-crowned Kinglet
Blue-gray Gnatcatcher
California Gnatcatcher
Black-tailed Gnatcatcher
Eastern Bluebird
Western Bluebird
Mountain Bluebird
Townsend's Solitaire
Veery
Gray-cheeked Thrush
Bicknell's Thrush
Swainson's Thrush
Hermit Thrush
Wood Thrush
Eurasian Blackbird
American Robin
Varied Thrush
Wrentit
European Starling
Gray Catbird
Black Catbird
Northern Mockingbird
Sage Thrasher
Brown Thrasher
Long-billed Thrasher
Curve-billed Thrasher
California Thrasher
Crissal Thrasher
American Pipit
Bohemian Waxwing
Cedar Waxwing
Phainopepla
Olive Warbler
Blue-winged Warbler
Golden-winged Warbler
Tennessee Warbler
Orange-crowned Warbler
Nashville Warbler
Virginia's Warbler
Lucy's Warbler
Northern Parula
Yellow Warbler
Chestnut-sided Warbler
Magnolia Warbler
Cape May Warbler
Black-throated Blue Warbler
Yellow-rumped Warbler
Black-throated Gray Warbler
Townsend's Warbler
Hermit Warbler
Black-throated Green Warbler
Blackburnian Warbler
Yellow-throated Warbler
Grace's Warbler
Pine Warbler
Prairie Warbler
Palm Warbler
Bay-breasted Warbler
Blackpoll Warbler
Cerulean Warbler
Black-and-white Warbler
American Redstart
Prothonotary Warbler
Worm-eating Warbler
Ovenbird
Northern Waterthrush
Louisiana Waterthrush
Kentucky Warbler
Mourning Warbler
MacGillivray's Warbler
Common Yellowthroat
Hooded Warbler
Wilson's Warbler
Canada Warbler
Painted Redstart
Yellow-breasted Chat
Summer Tanager
Scarlet Tanager
Western Tanager
Green-tailed Towhee
Eastern Towhee
Spotted Towhee
California Towhee
Canyon Towhee
Abert's Towhee
Cassin's Sparrow
Rufous-crowned Sparrow
American Tree Sparrow
Chipping Sparrow
Clay-colored Sparrow
Brewer's Sparrow
Field Sparrow
Vesper Sparrow
Lark Sparrow
Black-throated Sparrow
Sage Sparrow
Lark Bunting
Savannah Sparrow
Grasshopper Sparrow
Saltmarsh Sharp-tailed Sparrow
Nelson's Sharp-tailed Sparrow
Seaside Sparrow
Fox Sparrow
Song Sparrow
Lincoln's Sparrow
Swamp Sparrow
White-throated Sparrow
Harris's Sparrow
White-crowned Sparrow
Golden-crowned Sparrow
Dark-eyed Junco
Yellow-eyed Junco
McCown's Longspur
Lapland Longspur
Chestnut-collared Longspur
Snow Bunting
Crimson-collared Grosbeak
Northern Cardinal
Pyrrhuloxia
Rose-breasted Grosbeak
Black-headed Grosbeak
Blue Grosbeak
Lazuli Bunting
Indigo Bunting
Painted Bunting
Dickcissel
Bobolink
Red-winged Blackbird
Tricolored Blackbird
Eastern Meadowlark
Western Meadowlark
Yellow-headed Blackbird
Rusty Blackbird
Brewer's Blackbird
Common Grackle
Boat-tailed Grackle
Great-tailed Grackle
Bronzed Cowbird
Brown-headed Cowbird
Orchard Oriole
Hooded Oriole
Baltimore Oriole
Bullock's Oriole
Scott's Oriole
Gray-crowned Rosy-Finch
Black Rosy-Finch
Brown-capped Rosy-Finch
Pine Grosbeak
Purple Finch
Cassin's Finch
House Finch
Red Crossbill
White-winged Crossbill
Common Redpoll
Pine Siskin
Lesser Goldfinch
Lawrence's Goldfinch
American Goldfinch
Evening Grosbeak
House Sparrow

ABA Code 2 Birds - 141 species
Yellow-billed Loon
Least Grebe
Northern Fulmar
Cory's Shearwater
Pink-footed Shearwater
Greater Shearwater
Short-tailed Shearwater
Manx Shearwater
Black-vented Shearwater
Audubon's Shearwater
Wilson's Storm-Petrel
Fork-tailed Storm-Petrel
Leach's Storm-Petrel
Ashy Storm-Petrel
Black Storm-Petrel
Red-faced Cormorant
Emperor Goose
Steller's Eider
Snail Kite
Common Black-Hawk
Short-tailed Hawk
White-tailed Hawk
Zone-tailed Hawk
Crested Caracara
Merlin
Peregrine Falcon
Plain Chachalaca
Sage Grouse
Spruce Grouse
White-tailed Ptarmigan
Greater Prairie-chicken
Lesser Prairie-chicken
Sharp-tailed Grouse
Montezuma Quail
Mountain Quail
Clapper Rail
King Rail
Limpkin
Whooping Crane
Mountain Plover
Red Phalarope
Pomarine Jaeger
Parasitic Jaeger
Long-tailed Jaeger
Thayer's Gull
Iceland Gull
Red-legged Kittiwake
Sabine's Gull
Elegant Tern
Roseate Tern
Aleutian Tern
Sooty Tern
Dovekie
Thick-billed Murre
Razorbill
Black Guillemot
Kittlitz's Murrelet
Xantus's Murrelet
Ancient Murrelet
Cassin's Auklet
Parakeet Auklet
Least Auklet
Crested Auklet
Atlantic Puffin
Horned Puffin
White-tipped Dove
Budgerigar
Canary-winged Parakeet
Red-crowned Parrot
Smooth-billed Ani
Groove-billed Ani
Barn Owl
Flammulated Owl
Eastern Screech-Owl
Western Screech-Owl
Whiskered Screech-Owl
Snowy Owl
Northern Hawk Owl
Northern Pygmy-Owl
Elf Owl
Spotted Owl
Long-eared Owl
Short-eared Owl
Northern Saw-whet Owl
Pauraque
Common Poorwill
Chuck-will's-widow
Whip-poor-will
Black Swift
Broad-billed Hummingbird
Buff-bellied Hummingbird
Blue-throated Hummingbird
Magnificent Hummingbird
Lucifer Hummingbird
Ringed Kingfisher
Green Kingfisher
Red-cockaded Woodpecker
Three-toed Woodpecker
Northern Beardless-Tyrannulet
Greater Pewee
Buff-breasted Flycatcher
Dusky-capped Flycatcher
Great Kiskadee
Sulphur-bellied Flycatcher
Tropical Kingbird
Couch's Kingbird
Thick-billed Kingbird
Gray Kingbird
Rose-throated Becard
Black-capped Vireo
Black-whiskered Vireo
Green Jay
Brown Jay
Mexican Jay
Pinyon Jay
Mexican Chickadee
Red-whiskered Bulbul
Arctic Warbler
Crested Myna
Bendire's Thrasher
Le Conte's Thrasher
Sprague's Pipit
Golden-cheeked Warbler
Swainson's Warbler
Red-faced Warbler
Hepatic Tanager
Olive Sparrow
Bachman's Sparrow
Botteri's Sparrow
Rufous-winged Sparrow
Black-chinned Sparrow
Baird's Sparrow
Henslow's Sparrow
Le Conte's Sparrow
Smith's Longspur
Varied Bunting
Spot-breasted Oriole
Altamira Oriole
Audubon's Oriole
Hoary Redpoll
Eurasian Tree Sparrow

ABA Code 3 Birds - 45 species
Black-footed Albatross
Black-capped Petrel
Flesh-footed Shearwater
Buller's Shearwater
Masked Booby
Brown Booby
Tufted Duck
Spectacled Eider
Hook-billed Kite
Gyrfalcon
Yellow Rail
Black Rail
Bar-tailed Godwit
Sharp-tailed Sandpiper
Ruff
Great Skua
South Polar Skua
Little Gull
Lesser Black-backed Gull
Yellow-footed Gull
Ross's Gull
Ivory Gull
Bridled Tern
Brown Noddy
Red-billed Pigeon
Mangrove Cuckoo
Ferruginous Pygmy-Owl
Great Gray Owl
Boreal Owl
Antillean Nighthawk
Violet-crowned Hummingbird
Elegant Trogon
Yellow-green Vireo
Tamaulipas Crow
Sky Lark
Northern Wheatear
Yellow Wagtail
White Wagtail
Red-throated Pipit
Colima Warbler
Tropical Parula
Kirtland's Warbler
Connecticut Warbler
Five-striped Sparrow
McKay's Bunting

ABA Code 4 Birds - 74 species
Arctic Loon
Laysan Albatross
Short-tailed Albatross
Yellow-nosed Albatross
Mottled Petrel
Murphy's Petrel
Cook's Petrel
White-faced Storm-Petrel
Band-rumped Storm-Petrel
Least Storm-Petrel
White-tailed Tropicbird
Red-billed Tropicbird
Blue-footed Booby
Red-footed Booby
Greater Flamingo
Bean Goose
Barnacle Goose
Whooper Swan
Muscovy Duck
White-cheeked Pintail
Garganey
Common Pochard
Smew
Masked Duck
White-tailed Eagle
Mongolian Plover
Common Ringed Plover
Eurasian Dotterel
Northern Jacana
Common Greenshank
Spotted Redshank
Wood Sandpiper
Gray-tailed Tattler
Common Sandpiper
Terek Sandpiper
Bristle-thighed Curlew
Black-tailed Godwit
Red-necked Stint
Little Stint
Temminck's Stint
Long-toed Stint
Curlew Sandpiper
Slaty-backed Gull
Black Noddy
Craveri's Murrelet
Whiskered Auklet
Ruddy Ground-Dove
Buff-collared Nightjar
Green Violet-ear
White-eared Hummingbird
Berylline Hummingbird
Plain-capped Starthroat
Fork-tailed Flycatcher
Eurasian Jackdaw
Bahama Swallow
Siberian Tit
Black-capped Gnatcatcher
Siberian Rubythroat
Bluethroat
Eyebrowed Thrush
Dusky Thrush
Clay-colored Robin
Rufous-backed Robin
Black-backed Wagtail
Olive-backed Pipit
Rufous-capped Warbler
Bananaquit
Stripe-headed Tanager
White-collared Seedeater
Rustic Bunting
Blue Bunting
Shiny Cowbird
Brambling
Hawfinch

ABA Code 5 Birds - 155 species
Wandering Albatross
Shy Albatross
Black-browed Albatross
Herald Petrel
Stejneger's Petrel
White-chinned Petrel
Streaked Shearwater
Wedge-tailed Shearwater
Little Shearwater
European Storm-Petrel
Wedge-rumped Storm-Petrel
Red-tailed Tropicbird
Great Frigatebird
Lesser Frigatebird
Yellow Bittern
Chinese Egret
Little Egret
Western Reef-Heron
Scarlet Ibis
Jabiru
Pink-footed Goose
Lesser White-fronted Goose
Falcated Duck
Spot-billed Duck
Baikal Teal
Steller's Sea-Eagle
Crane Hawk
Roadside Hawk
Collared Forest-Falcon
Eurasian Kestrel
Aplomado Falcon
Eurasian Hobby
Himalayan Snowcock
Corn Crake
Paint-billed Crake
Spotted Rail
Azure Gallinule
Eurasian Coot
Oriental Scops-Owl
Common Crane
Double-striped Thick-knee
Northern Lapwing
European Golden-Plover
Collared Plover
Little Ringed Plover
Eurasian Oystercatcher
Black-winged Stilt
Oriental Pratincole
Marsh Sandpiper
Green Sandpiper
Little Curlew
Eskimo Curlew
Slender-billed Curlew
Far Eastern Curlew
Eurasian Curlew
Great Knot
Spoonbill Sandpiper
Broad-billed Sandpiper
Jack Snipe
Pin-tailed Snipe
Eurasian Woodcock
Band-tailed Gull
Yellow-legged Gull
Large-billed Tern
White-winged Tern
Scaly-naped Pigeon
European Turtle-Dove
Oriental Turtle-Dove
Zenaida Dove
Key West Quail-Dove
Ruddy Quail-Dove
Thick-billed Parrot
Common Cuckoo
Oriental Cuckoo
Mottled Owl
Jungle Nightjar
White-collared Swift
White-throated Needletail
Common Swift
Fork-tailed Swift
Antillean Palm Swift
Green-breasted Mango
Xantus's Hummingbird
Cinnamon Hummingbird
Bahama Woodstar
Bumblebee Hummingbird
Eared Trogon
Hoopoe
Eurasian Wryneck
Great Spotted Woodpecker
Greenish Elaenia
Caribbean Elaenia
Tufted Flycatcher
Nutting's Flycatcher
La Sagra's Flycatcher
Variegated Flycatcher
Loggerhead Kingbird
Masked Tityra
Brown Shrike
Thick-billed Vireo
Yucatan Vireo
Cuban Martin
Gray-breasted Martin
Southern Martin
Brown-chested Martin
Common House-Martin
Middendorff's Grasshopper-Warbler
Lanceolated Warbler
Wood Warbler
Dusky Warbler
Narcissus Flycatcher
Mugimaki Flycatcher
Red-breasted Flycatcher
Siberian Flycatcher
Gray-spotted Flycatcher
Asian Brown Flycatcher
Siberian Blue Robin
Red-flanked Bluetail
Stonechat
Fieldfare
Redwing
White-throated Robin
Aztec Thrush
Bahama Mockingbird
Blue Mockingbird
Siberian Accentor
Citrine Wagtail
Gray Wagtail
Tree Pipit
Pechora Pipit
Gray Silky-flycatcher
Crescent-chested Warbler
Gray-crowned Yellowthroat
Slate-throated Redstart
Fan-tailed Warbler
Golden-crowned Warbler
Flame-colored Tanager
Yellow-faced Grassquit
Black-faced Grassquit
Worthen's Sparrow
Pine Bunting
Little Bunting
Yellow-breasted Bunting
Gray Bunting
Pallas's Bunting
Reed Bunting
Yellow Grosbeak
Tawny-shouldered Blackbird
Black-vented Oriole
Streak-backed Oriole
Common Chaffinch
Common Rosefinch
Eurasian Siskin
Oriental Greenfinch
Eurasian Bullfinch

ABA Code 6 Birds - 5 species
Labrador Duck
Great Auk
Passenger Pigeon
Ivory-billed Woodpecker
Bachman's Warbler