| SNGO | Snow Goose |
| BRAN | Brant |
| CAGO | Canada Goose |
| MUSW | Mute Swan |
| TRUS | Trumpeter Swan |
| WODU | Wood Duck |
| GADW | Gadwall |
| EUWI | Eurasian Wigeon |
| AMWI | American Wigeon |
| ABDU | American Black Duck |
| MALL | Mallard |
| BWTE | Blue-winged Teal |
| CITE | Cinnamon Teal |
| NOSL | Northern Shoveler |
| NOPI | Northern Pintail |
| GWTE | Green-winged Teal |
| CANV | Canvasback |
| REDH | Redhead |
| RNDU | Ring-necked Duck |
| GRSC | Greater Scaup |
| LESC | Lesser Scaup |
| HADU | Harlequin Duck |
| SUSC | Surf Scoter |
| WWSC | White-winged Scoter |
| LTDU | Long-tailed Duck |
| BUFF | Bufflehead |
| COGO | Common Goldeneye |
| BAGO | Barrow's Goldeneye |
| HOME | Hooded Merganser |
| COME | Common Merganser |
| RBME | Red-breasted Merganser |
| RUDU | Ruddy Duck |
| CHUK | Chukar |
| GRPA | Gray Partridge |
| RNPH | Ring-necked Pheasant |
| SIPH | Silver Pheasant |
| PEAF | Indian Peafowl |
| RUGR | Ruffed Grouse |
| SPGR | Spruce Grouse |
| WIPT | Willow Ptarmigan |
| ROPT | Rock Ptarmigan |
| WTPT | White-tailed Ptarmigan |
| DUGR | Dusky Grouse |
| SOGR | Sooty Grouse |
| STGR | Sharp-tailed Grouse |
| WITU | Wild Turkey |
| MOQU | Mountain Quail |
| CAQU | California Quail |
| NOBO | Northern Bobwhite |
| RTLO | Red-throated Loon |
| PALO | Pacific Loon |
| COLO | Common Loon |
| PBGR | Pied-billed Grebe |
| HOGR | Horned Grebe |
| RNGR | Red-necked Grebe |
| EAGR | Eared Grebe |
| WEGR | Western Grebe |
| CLGR | Clark's Grebe |
| NOFU | Northern Fulmar |
| FTSP | Fork-tailed Storm-Petrel |
| LSPE | Leach's Storm-Petrel |
| AWPE | American White Pelican |
| BRCO | Brandt's Cormorant |
| DCCO | Double-crested Cormorant |
| PECO | Pelagic Cormorant |
| AMBI | American Bittern |
| LEBI | Least Bittern |
| GBHE | Great Blue Heron |
| GRHE | Green Heron |
| BCNH | Black-crowned Night-Heron |
| TUVU | Turkey Vulture |
| OSPR | Osprey |
| BAEA | Bald Eagle |
| NOHA | Northern Harrier |
| SSHA | Sharp-shinned Hawk |
| COHA | Cooper's Hawk |
| NOGO | Northern Goshawk |
| BWHA | Broad-winged Hawk |
| SWHA | Swainson's Hawk |
| RTHA | Red-tailed Hawk |
| HAHA | Red-tailed Hawk (Harlan's) |
| FEHA | Ferruginous Hawk |
| GOEA | Golden Eagle |
| AMKE | American Kestrel |
| MERL | Merlin |
| GYRF | Gyrfalcon |
| PEFA | Peregrine Falcon |
| PRFA | Prairie Falcon |
| YERA | Yellow Rail |
| VIRA | Virginia Rail |
| SORA | Sora |
| AMCO | American Coot |
| SACR | Sandhill Crane |
| AGPL | American Golden-Plover |
| SEPL | Semipalmated Plover |
| KILL | Killdeer |
| BLOY | Black Oystercatcher |
| BNST | Black-necked Stilt |
| AMAV | American Avocet |
| SPSA | Spotted Sandpiper |
| SOSA | Solitary Sandpiper |
| WATA | Wandering Tattler |
| GRYE | Greater Yellowlegs |
| LEYE | Lesser Yellowlegs |
| UPSA | Upland Sandpiper |
| LBCU | Long-billed Curlew |
| HUGO | Hudsonian Godwit |
| LESA | Least Sandpiper |
| BASA | Baird's Sandpiper |
| SBDO | Short-billed Dowitcher |
| WISN | Wilson's Snipe |
| WIPH | Wilson's Phalarope |
| RNPL | Red-necked Phalarope |
| BLKI | Black-legged Kittiwake |
| BOGU | Bonaparte's Gull |
|
| FRGU | Franklin's Gull |
| MEGU | Mew Gull |
| RBGU | Ring-billed Gull |
| WEGU | Western Gull |
| CAGU | California Gull |
| HEGU | Herring Gull |
| GWGU | Glaucous-winged Gull |
| GWGH | Western x Glaucous-winged Gull (hybrid) |
| CATE | Caspian Tern |
| BLTE | Black Tern |
| COTE | Common Tern |
| ARTE | Arctic Tern |
| FOTE | Forster's Tern |
| PAJA | Parasitic Jaeger |
| COMU | Common Murre |
| TBMU | Thick-billed Murre |
| PIGU | Pigeon Guillemot |
| MAMU | Marbled Murrelet |
| ANMU | Ancient Murrelet |
| CAAU | Cassin's Auklet |
| RHAU | Rhinoceros Auklet |
| HOPU | Horned Puffin |
| TUPU | Tufted Puffin |
| ROPI | Rock Pigeon |
| BTPI | Band-tailed Pigeon |
| ECDO | Eurasian Collared-Dove |
| MODO | Mourning Dove |
| YBCU | Yellow-billed Cuckoo |
| BNOW | Barn Owl |
| FLOW | Flammulated Owl |
| WSOW | Western Screech-Owl |
| GHOW | Great Horned Owl |
| NHOW | Northern Hawk Owl |
| NPOW | Northern Pygmy-Owl |
| BUOW | Burrowing Owl |
| SPOW | Spotted Owl |
| BDOW | Barred Owl |
| GGOW | Great Gray Owl |
| LEOW | Long-eared Owl |
| SEOW | Short-eared Owl |
| BOOW | Boreal Owl |
| NSWO | Northern Saw-whet Owl |
| CONI | Common Nighthawk |
| COPO | Common Poorwill |
| BLSW | Black Swift |
| VASW | Vaux's Swift |
| WTSW | White-throated Swift |
| RTHU | Ruby-throated Hummingbird |
| BCHU | Black-chinned Hummingbird |
| ANHU | Anna's Hummingbird |
| CAHU | Calliope Hummingbird |
| BTHU | Broad-tailed Hummingbird |
| RUHU | Rufous Hummingbird |
| BEKI | Belted Kingfisher |
| LEWO | Lewis's Woodpecker |
| WISA | Williamson's Sapsucker |
| YBSA | Yellow-bellied Sapsucker |
| RNSA | Red-naped Sapsucker |
| RBSA | Red-breasted Sapsucker |
| SAPS | Unknown Sapsucker |
| SAHY | Sapsucker hybrid |
| DOWO | Downy Woodpecker |
| HAWO | Hairy Woodpecker |
| WHWO | White-headed Woodpecker |
| ATTW | American Three-toed Woodpecker |
| BBWO | Black-backed Woodpecker |
| NOFL | Northern Flicker |
| PIWO | Pileated Woodpecker |
| OSFL | Olive-sided Flycatcher |
| WWPE | Western Wood-Pewee |
| YBFL | Yellow-bellied Flycatcher |
| ALFL | Alder Flycatcher |
| WIFL | Willow Flycatcher |
| LEFL | Least Flycatcher |
| HAFL | Hammond's Flycatcher |
| GRFL | Gray Flycatcher |
| DUFL | Dusky Flycatcher |
| WEFL | Cordilleran or Pacific-slope Flycatcher (Western) |
| PSFL | Pacific-slope Flycatcher |
| COFL | Cordilleran Flycatcher |
| EAPH | Eastern Phoebe |
| SAPH | Say's Phoebe |
| WEKI | Western Kingbird |
| EAKI | Eastern Kingbird |
| NOSH | Northern Shrike |
| CAVI | Cassin's Vireo |
| BHVI | Blue-headed Vireo |
| HUVI | Hutton's Vireo |
| WAVI | Warbling Vireo |
| PHVI | Philadelphia Vireo |
| REVI | Red-eyed Vireo |
| GRJA | Gray Jay |
| STJA | Steller's Jay |
| BLJA | Blue Jay |
| WSJA | Western Scrub-Jay |
| CLNU | Clark's Nutcracker |
| BBMA | Black-billed Magpie |
| AMCR | American Crow |
| NOCR | Northwestern Crow |
| CROW | American or Northwestern Crow |
| CORA | Common Raven |
| SKLA | Sky Lark |
| HOLA | Horned Lark |
| PUMA | Purple Martin |
| TRSW | Tree Swallow |
| VGSW | Violet-green Swallow |
| NRWS | Northern Rough-winged Swallow |
| BKSW | Bank Swallow |
| CLSW | Cliff Swallow |
| BASW | Barn Swallow |
| BCCH | Black-capped Chickadee |
| MOCH | Mountain Chickadee |
| CBCH | Chestnut-backed Chickadee |
| BOCH | Boreal Chickadee |
| BUSH | Bushtit |
|
| RBNU | Red-breasted Nuthatch |
| WBNU | White-breasted Nuthatch |
| PYNU | Pygmy Nuthatch |
| BRCR | Brown Creeper |
| ROWR | Rock Wren |
| CAWR | Canyon Wren |
| BEWR | Bewick's Wren |
| HOWR | House Wren |
| WIWR | Pacific/Winter Wren |
| EWWR | Winter Wren |
| PAWR | Pacific Wren |
| MAWR | Marsh Wren |
| AMDI | American Dipper |
| GCKI | Golden-crowned Kinglet |
| RCKI | Ruby-crowned Kinglet |
| WEBL | Western Bluebird |
| MOBL | Mountain Bluebird |
| TOSO | Townsend's Solitaire |
| VEER | Veery |
| GCTH | Gray-cheeked Thrush |
| SWTH | Swainson's Thrush |
| HETH | Hermit Thrush |
| AMRO | American Robin |
| VATH | Varied Thrush |
| GRCA | Gray Catbird |
| NOMO | Northern Mockingbird |
| SATH | Sage Thrasher |
| BRTH | Brown Thrasher |
| EUST | European Starling |
| AMPI | American Pipit |
| SPPI | Sprague's Pipit |
| BOWA | Bohemian Waxwing |
| CEWA | Cedar Waxwing |
| TEWA | Tennessee Warbler |
| OCWA | Orange-crowned Warbler |
| NAWA | Nashville Warbler |
| YEWA | Yellow Warbler |
| CSWA | Chestnut-sided Warbler |
| MGNW | Magnolia Warbler |
| CMWA | Cape May Warbler |
| BTBW | Black-throated Blue Warbler |
| YRWA | Yellow-rumped Warbler |
| MYWA | Yellow-rumped Warbler (Myrtle) |
| AUWA | Yellow-rumped Warbler (Audubon's) |
| BTGW | Black-throated Gray Warbler |
| BTNW | Black-throated Green Warbler |
| TOWA | Townsend's Warbler |
| HEWA | Hermit Warbler |
| PAWA | Palm Warbler |
| BAYW | Bay-breasted Warbler |
| BKPW | Blackpoll Warbler |
| BAWW | Black-and-white Warbler |
| AMRE | American Redstart |
| POWA | Prothonotary Warbler |
| OVEN | Ovenbird |
| NOWA | Northern Waterthrush |
| COWA | Connecticut Warbler |
| MOWA | Mourning Warbler |
| MACW | MacGillivray's Warbler |
| COYE | Common Yellowthroat |
| WIWA | Wilson's Warbler |
| CAWA | Canada Warbler |
| YBCH | Yellow-breasted Chat |
| SPTO | Spotted Towhee |
| ATSP | American Tree Sparrow |
| CHSP | Chipping Sparrow |
| CCSP | Clay-colored Sparrow |
| BRSP | Brewer's Sparrow |
| VESP | Vesper Sparrow |
| LASP | Lark Sparrow |
| BTSP | Black-throated Sparrow |
| LKBU | Lark Bunting |
| SAVS | Savannah Sparrow |
| GRSP | Grasshopper Sparrow |
| LCSP | Le Conte's Sparrow |
| NSTS | Nelson's Sparrow |
| FOSP | Fox Sparrow |
| SOSP | Song Sparrow |
| LISP | Lincoln's Sparrow |
| SWSP | Swamp Sparrow |
| WTSP | White-throated Sparrow |
| WCSP | White-crowned Sparrow |
| GCSP | Golden-crowned Sparrow |
| DEJU | Dark-eyed Junco |
| SMLO | Smith's Longspur |
| SNBU | Snow Bunting |
| SUTA | Summer Tanager |
| WETA | Western Tanager |
| RBGR | Rose-breasted Grosbeak |
| BHGR | Black-headed Grosbeak |
| LZBU | Lazuli Bunting |
| INBU | Indigo Bunting |
| BOBO | Bobolink |
| RWBL | Red-winged Blackbird |
| WEME | Western Meadowlark |
| YHBL | Yellow-headed Blackbird |
| RUBL | Rusty Blackbird |
| BRBL | Brewer's Blackbird |
| COGR | Common Grackle |
| BHCO | Brown-headed Cowbird |
| BUOR | Bullock's Oriole |
| BAOR | Baltimore Oriole |
| GCRF | Gray-crowned Rosy-Finch |
| PIGR | Pine Grosbeak |
| PUFI | Purple Finch |
| CAFI | Cassin's Finch |
| HOFI | House Finch |
| RECR | Red Crossbill |
| WWCR | White-winged Crossbill |
| CORE | Common Redpoll |
| PISI | Pine Siskin |
| LEGO | Lesser Goldfinch |
| AMGO | American Goldfinch |
| EVGR | Evening Grosbeak |
| HOSP | House Sparrow |
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