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Native and Naturalized (525)
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Exotic: Provisional (5)
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Exotic: Escapee (42)
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Hybrids (78)
- Northern Pintail x Green-winged Teal (hybrid) Anas acuta x creccaDetails:
- Canvasback x Redhead (hybrid) Aythya valisineria x americanaDetails:
- White-crowned x Harris's Sparrow (hybrid) Zonotrichia leucophrys x querulaDetails:
- Anna's Hummingbird x Selasphorus sp. (hybrid) Calypte anna x Selasphorus sp.Details:
- Tufted Duck x Lesser Scaup (hybrid) Aythya fuligula x affinisDetails:
- Mountain x Chestnut-backed Chickadee (hybrid) Poecile gambeli x rufescensDetails:
- Ring-necked Duck x Greater Scaup (hybrid) Aythya collaris x marilaDetails:
- Ring-necked Duck x scaup sp. (hybrid) Aythya collaris x marila/affinisDetails:
- Northern Bobwhite x California Quail (hybrid) Colinus virginianus x Callipepla californicaDetails:
- Snow x Cackling Goose (hybrid) Anser caerulescens x Branta hutchinsiiDetails:
- Wood Duck x Mallard (hybrid) Aix sponsa x Anas platyrhynchosDetails:
- White-crowned x White-throated Sparrow (hybrid) Zonotrichia leucophrys x albicollisDetails:
- Golden-crowned x White-throated Sparrow (hybrid) Zonotrichia atricapilla x albicollisDetails:
- Black-throated Gray x Townsend's Warbler (hybrid) Setophaga nigrescens x townsendiDetails:
- Snow/Ross's x Cackling/Canada Goose (hybrid) Anser caerulescens/rossii x Branta hutchinsii/canadensisDetails:
- House x Eurasian Tree Sparrow (hybrid) Passer domesticus x montanusDetails:
- Anna's x Costa's Hummingbird (hybrid) Calypte anna x costaeDetails:
- Gadwall x Green-winged Teal (hybrid) Mareca strepera x Anas creccaDetails:
- Blue-winged Teal x Northern Shoveler (hybrid) Spatula discors x clypeataDetails:
- Cinnamon Teal x Northern Shoveler (hybrid) Spatula cyanoptera x clypeataDetails:
- Eurasian x African Collared-Dove (hybrid) Streptopelia decaocto x roseogriseaDetails:
- Redhead x Ring-necked Duck (hybrid) Aythya americana x collarisDetails:
- Spotted x Barred Owl (hybrid) Strix occidentalis x variaDetails:
- American Wigeon x Green-winged Teal (hybrid) Mareca americana x Anas creccaDetails:
- Barrow's Goldeneye x Hooded Merganser (hybrid) Bucephala islandica x Lophodytes cucullatusDetails:
- Gadwall x American Wigeon (hybrid) Mareca strepera x americanaDetails:
- Graylag x Swan Goose (hybrid) Anser anser x cygnoidesDetails:
- Swan Goose x Canada Goose (hybrid) Anser cygnoides x Branta canadensisDetails:
- Black-chinned x Rufous Hummingbird (hybrid) Archilochus alexandri x Selasphorus rufusDetails:
- Lazuli x Indigo Bunting (hybrid) Passerina amoena x cyaneaDetails:
- Violet-green x Northern Rough-winged Swallow (hybrid) Tachycineta thalassina x Stelgidopteryx serripennisDetails:
- Yellow-bellied x Red-naped Sapsucker (hybrid) Sphyrapicus varius x nuchalisDetails:
- Barnacle x Cackling Goose (hybrid) Branta leucopsis x hutchinsii
- goldeneye sp. x Hooded Merganser (hybrid) Bucephala clangula/islandica x Lophodytes cucullatusDetails:
- Trumpeter x Tundra Swan (hybrid) Cygnus buccinator x columbianusDetails:
- Tree x Violet-green Swallow (hybrid) Tachycineta bicolor x thalassinaDetails:
- Violet-green x Cliff Swallow (hybrid) Tachycineta thalassina x Petrochelidon pyrrhonotaDetails:
- MacGillivray's Warbler x Common Yellowthroat (hybrid) Geothlypis tolmiei x trichasDetails:
- Black-chinned x Anna's Hummingbird (hybrid) Archilochus alexandri x Calypte annaDetails:
- Anna's x Rufous Hummingbird (hybrid) Calypte anna x Selasphorus rufusDetails:
- Muscovy Duck x Mallard (hybrid) Cairina moschata x Anas platyrhynchosDetails:
- Black-chinned x Calliope Hummingbird (hybrid) Archilochus alexandri x Selasphorus calliopeDetails:
- Bullock's x Baltimore Oriole (hybrid) Icterus bullockii x galbulaDetails:
- American Wigeon x Mallard (hybrid) Mareca americana x Anas platyrhynchosDetails:
- Black-capped x Mountain Chickadee (hybrid) Poecile atricapillus x gambeliDetails:
- Chipping x Clay-colored Sparrow (hybrid) Spizella passerina x pallidaDetails:
- American Wigeon x Northern Pintail (hybrid) Mareca americana x Anas acutaDetails:
- Song x Swamp Sparrow (hybrid) Melospiza melodia x georgianaDetails:
- Snow x Greater White-fronted Goose (hybrid) Anser caerulescens x albifronsDetails:
- Ring-necked Duck x Lesser Scaup (hybrid) Aythya collaris x affinisDetails:
- Snow x Ross's Goose (hybrid) Anser caerulescens x rossiiDetails:
- Greater White-fronted x Cackling Goose (hybrid) Anser albifrons x Branta hutchinsiiDetails:
- Common x Barrow's Goldeneye (hybrid) Bucephala clangula x islandicaDetails:
- Gadwall x Mallard (hybrid) Mareca strepera x Anas platyrhynchosDetails:
- White-crowned x Golden-crowned Sparrow (hybrid) Zonotrichia leucophrys x atricapilla
- Herring x Glaucous Gull (hybrid) Larus argentatus x hyperboreus
- Barnacle x Canada Goose (hybrid) Branta leucopsis x canadensisDetails:
- Snow x Canada Goose (hybrid) Anser caerulescens x Branta canadensisDetails:
- Common Goldeneye x Hooded Merganser (hybrid) Bucephala clangula x Lophodytes cucullatusDetails:
- Bufflehead x Common Goldeneye (hybrid) Bucephala albeola x clangulaDetails:
- Graylag x Canada Goose (hybrid) Anser anser x Branta canadensis
- Western x Clark's Grebe (hybrid) Aechmophorus occidentalis x clarkii
- Blue-winged x Cinnamon Teal (hybrid) Spatula discors x cyanopteraDetails:
- Mountain x Boreal Chickadee (hybrid) Poecile gambeli x hudsonicusDetails:
- Glaucous x Glaucous-winged Gull (hybrid) Larus hyperboreus x glaucescensDetails:
- Mallard x Northern Pintail (hybrid) Anas platyrhynchos x acutaDetails:
- Barn x Cliff Swallow (hybrid) Hirundo rustica x Petrochelidon pyrrhonotaDetails:
- Greater White-fronted x Canada Goose (hybrid) Anser albifrons x Branta canadensisDetails:
- Bufflehead x Hooded Merganser (hybrid) Bucephala albeola x Lophodytes cucullatusDetails:
- Tufted Duck x Greater Scaup (hybrid) Aythya fuligula x marilaDetails:
- Red-naped x Red-breasted Sapsucker (hybrid) Sphyrapicus nuchalis x ruber
- Eurasian x American Wigeon (hybrid) Mareca penelope x americanaDetails:
- Mallard x American Black Duck (hybrid) Anas platyrhynchos x rubripesDetails:
- Domestic goose sp. x Canada Goose (hybrid) Anser sp. (Domestic type) x Branta canadensis
- Tufted Duck x scaup sp. (hybrid) Aythya fuligula x marila/affinisDetails:
- Herring x Glaucous-winged Gull (hybrid) Larus argentatus x glaucescensDetails:
- Townsend's x Hermit Warbler (hybrid) Setophaga townsendi x occidentalis
- Western x Glaucous-winged Gull (hybrid) Larus occidentalis x glaucescens
Additional Taxa (220)
- nighthawk sp. Chordeiles sp.Details:
- Red/Cassia Crossbill Loxia curvirostra/sinesciurisDetails:
- yellowthroat sp. Geothlypis sp. (yellowthroat sp.)Details:
- Zosterops sp. Zosterops sp.Details:
- corvid sp. Corvidae sp.Details:
- white-eye sp. Zosteropidae sp.Details:
- Boreal/Northern Saw-whet Owl Aegolius funereus/acadicusDetails:
- pheasant sp. Phasianidae sp. (pheasant sp.)Details:
- wagtail sp. Motacilla sp.Details:
- storm-petrel sp. (dark-rumped) Oceanitidae/Hydrobatidae sp. (dark-rumped)Details:
- Masked/Nazca Booby Sula dactylatra/grantiDetails:
- Streptopelia sp. Streptopelia sp.Details:
- Ring-necked/Green Pheasant Phasianus colchicus/versicolorDetails:
- redpoll sp. Acanthis sp.Details:
- francolin/spurfowl sp. Phasianidae sp. (francolin/spurfowl sp.)Details:
- pelican sp. Pelecanus sp.Details:
- raven sp. Corvus sp. (raven sp.)Details:
- Bubo sp. Bubo sp.Details:
- Passer sp. Passer sp.Details:
- Herring/Glaucous-winged Gull Larus argentatus/glaucescensDetails:
- Common Ringed/Semipalmated Plover Charadrius hiaticula/semipalmatusDetails:
- Ardea sp. Ardea sp.Details:
- parrot sp. Psittaciformes sp. (parrot sp.)Details:
- Yellow-bellied/Red-naped Sapsucker Sphyrapicus varius/nuchalisDetails:
- Anas sp. Anas sp.Details:
- nightjar sp. Caprimulgidae sp.Details:
- Gray/Dusky Flycatcher Empidonax wrightii/oberholseriDetails:
- Spinus sp. Spinus sp.
- Snow/McKay's Bunting Plectrophenax nivalis/hyperboreusDetails:
- Black-capped/Mountain Chickadee Poecile atricapillus/gambeliDetails:
- Anser sp. Anser sp.Details:
- Arctic/Pacific Loon Gavia arctica/pacificaDetails:
- lovebird sp. Agapornis sp.Details:
- stilt/avocet sp. Recurvirostridae sp.Details:
- Tringa sp. Tringa sp.Details:
- large shorebird sp. Scolopacidae sp. (large shorebird sp.)Details:
- Tyrannus sp. Tyrannus sp.Details:
- white egret sp. Egretta/Bubulcus/Ardea sp.Details:
- MacGillivray's/Mourning Warbler Geothlypis tolmiei/philadelphiaDetails:
- Rusty/Brewer's Blackbird Euphagus carolinus/cyanocephalusDetails:
- Hydrobates sp. Hydrobates sp.Details:
- large swift sp. Apodidae sp. (large swift sp.)Details:
- Eurasian/African Collared-Dove Streptopelia decaocto/roseogriseaDetails:
- California/Woodhouse's Scrub-Jay Aphelocoma californica/woodhouseii
- pipit sp. Anthus sp.Details:
- Branta sp. Branta sp.Details:
- rosy-finch sp. Leucosticte sp.Details:
- small swift sp. Apodidae sp. (small swift sp.)Details:
- Bullock's/Baltimore Oriole Icterus bullockii/galbulaDetails:
- black-and-white shearwater sp. Puffinus sp. (black-and-white shearwater sp.)Details:
- ibis sp. Threskiornithidae sp. (ibis sp.)Details:
- Spotted/Eastern Towhee (Rufous-sided Towhee) Pipilo maculatus/erythrophthalmusDetails:
- small plover sp. Charadrius/Anarhynchus sp.Details:
- godwit sp. Limosa sp.Details:
- parakeet sp. Psittaciformes sp. (parakeet sp.)Details:
- Western/Eastern Wood-Pewee Contopus sordidulus/virensDetails:
- Passerina sp. Passerina sp.Details:
- rail/crake sp. Rallidae sp. (rail/crake sp.)Details:
- Common/Hoary Redpoll Acanthis flammea/hornemanniDetails:
- Cooper's Hawk/American Goshawk Accipiter cooperii/atricapillusDetails:
- auklet sp. Ptychoramphus/Aethia sp.Details:
- new world goldfinch sp. Spinus sp. (goldfinch sp.)Details:
- Thick-billed/Common Murre Uria lomvia/aalgeDetails:
- Glossy/White-faced Ibis Plegadis falcinellus/chihiDetails:
- yellow-bellied kingbird sp. Tyrannus sp. (yellow-bellied)Details:
- white-winged gull sp. Larus sp. (white-winged gull sp.)Details:
- Black-throated Gray/Hermit Warbler Setophaga nigrescens/occidentalis
- Lazuli/Indigo Bunting Passerina amoena/cyaneaDetails:
- longspur sp. Calcarius/Rhynchophanes sp.Details:
- Common/Short-billed Gull Larus canus/brachyrhynchusDetails:
- large falcon sp. Falco sp. (large falcon sp.)Details:
- Cassin's/Plumbeous Vireo Vireo cassinii/plumbeus
- heron sp. Ardeidae sp.Details:
- Rufous/Allen's Hummingbird Selasphorus rufus/sasin
- Long-tailed/Parasitic Jaeger Stercorarius longicaudus/parasiticusDetails:
- Cassin's/Blue-headed Vireo Vireo cassinii/solitariusDetails:
- phoebe sp. Sayornis sp.Details:
- Selasphorus sp. Selasphorus sp.Details:
- Buteo/eagle sp. Buteo/eagle sp.Details:
- eagle sp. Accipitridae sp. (eagle sp.)Details:
- large tern sp. Hydroprogne/Thalasseus sp.Details:
- Pterodroma sp. Pterodroma sp.Details:
- Turdus sp. Turdus sp.Details:
- Rose-breasted/Black-headed Grosbeak Pheucticus ludovicianus/melanocephalus
- plover sp. Charadriidae sp.Details:
- Dryobates sp. Dryobates sp.
- Setophaga sp. Setophaga sp.
- kingfisher sp. Alcedinidae sp.Details:
- new world vulture sp. Cathartidae sp.Details:
- pewee sp. (Contopus sp.) Contopus sp.Details:
- Haemorhous sp. Haemorhous sp.Details:
- merganser sp. Mergellus/Lophodytes/Mergus sp.Details:
- albatross sp. Diomedeidae sp.
- storm-petrel sp. Oceanitidae/Hydrobatidae sp.
- procellariid sp. Procellariidae sp.
- Red-winged/Tricolored Blackbird Agelaius phoeniceus/tricolor
- Common/Yellow-billed Loon Gavia immer/adamsiiDetails:
- new world oriole sp. Icterus sp.Details:
- Eurasian/Oriental Skylark Alauda arvensis/gulgulaDetails:
- curlew sp. Numenius sp.Details:
- Black-throated Gray/Townsend's Warbler Setophaga nigrescens/townsendiDetails:
- Mitred/Red-masked Parakeet Psittacara mitratus/erythrogenysDetails:
- Spotted/Barred Owl Strix occidentalis/variaDetails:
- Acanthis/Spinus sp. Acanthis/Spinus sp.Details:
- Snow/Ross's Goose Anser caerulescens/rossiiDetails:
- goose sp. Anatidae (goose sp.)Details:
- crossbill sp. Loxia sp.Details:
- Podiceps sp. Podiceps sp.Details:
- new world quail sp. Odontophoridae sp.Details:
- Rock/Band-tailed Pigeon Columba livia/Patagioenas fasciata
- gull/tern sp. Laridae sp.
- large parakeet sp. (former Aratinga sp.) Eupsittula/Aratinga/Thectocercus/Psittacara sp.Details:
- Taiga/Tundra Bean-Goose Anser fabalis/serrirostrisDetails:
- Zonotrichia sp. Zonotrichia sp.Details:
- pigeon/dove sp. Columbidae sp.
- Long-eared/Short-eared Owl Asio otus/flammeus
- Asio sp. Asio sp.Details:
- Western/Semipalmated Sandpiper Calidris mauri/pusilla
- Black-bellied Plover/golden-plover sp. Pluvialis sp.Details:
- diurnal raptor sp. Accipitriformes/Falconiformes sp.Details:
- Catharus sp. Catharus sp.Details:
- Eurasian/American Wigeon Mareca penelope/americana
- Common/Wilson's Snipe Gallinago gallinago/delicata
- Varied Thrush/American Robin Ixoreus naevius/Turdus migratorius
- jay sp. Corvidae sp. (jay sp.)
- vireo sp. Vireo sp.
- Purple/Cassin's Finch Haemorhous purpureus/cassinii
- Loggerhead/Northern Shrike Lanius ludovicianus/borealis
- Bohemian/Cedar Waxwing Bombycilla garrulus/cedrorumDetails:
- Parasitic/Pomarine Jaeger Stercorarius parasiticus/pomarinus
- Dusky/Sooty Grouse Dendragapus obscurus/fuliginosusDetails:
- crow sp. Corvus sp. (crow sp.)
- owl sp. Strigiformes sp.
- Leiothlypis sp. Leiothlypis sp.Details:
- Sharp-tailed/Pectoral Sandpiper Calidris acuminata/melanotos
- Western/Eastern Meadowlark Sturnella neglecta/magna
- Pacific/Winter Wren Troglodytes pacificus/hiemalis
- teal sp. Anatidae sp. (teal sp.)
- swift sp. Apodidae sp.
- Forster's/Common Tern Sterna forsteri/hirundo
- thrush sp. Turdidae sp.Details:
- sapsucker sp. Sphyrapicus sp.
- Hammond's/Dusky Flycatcher Empidonax hammondii/oberholseri
- new world flycatcher sp. Tyrannidae sp.Details:
- bluebird sp. Sialia sp.
- American Three-toed/Black-backed Woodpecker Picoides dorsalis/arcticusDetails:
- small falcon sp. Falco sp. (small falcon sp.)Details:
- swan sp. Cygnus sp.
- waterfowl sp. Anatidae sp.
- Scripps's/Guadalupe Murrelet (Xantus's Murrelet) Synthliboramphus scrippsi/hypoleucusDetails:
- golden-plover sp. Pluvialis dominica/apricaria/fulva
- grouse sp. Tetraoninae sp.
- bird sp. Aves sp.Details:
- Sooty/Short-tailed Shearwater Ardenna grisea/tenuirostrisDetails:
- shearwater sp. Procellariidae sp. (shearwater sp.)Details:
- Herring/Iceland Gull Larus argentatus/glaucoides
- Sterna sp. Sterna sp.
- Scolopacidae sp. Scolopacidae sp.Details:
- shrike sp. Lanius sp.Details:
- Golden/Bald Eagle Aquila chrysaetos/Haliaeetus leucocephalus
- dabbling duck sp. Anatidae sp. (dabbling duck sp.)
- grebe sp. Podicipedidae sp.
- Tree/Violet-green Swallow Tachycineta bicolor/thalassina
- nuthatch sp. Sitta sp.Details:
- Trumpeter/Tundra Swan Cygnus buccinator/columbianus
- crow/raven sp. Corvus sp.Details:
- phalarope sp. Phalaropus sp.
- murrelet sp. Brachyramphus/Synthliboramphus sp.
- Townsend's/Hermit Warbler Setophaga townsendi/occidentalis
- shorebird sp. Charadriiformes sp.
- Horned/Eared Grebe Podiceps auritus/nigricollis
- Western/Glaucous-winged Gull Larus occidentalis/glaucescens
- Red-naped/Red-breasted Sapsucker Sphyrapicus nuchalis/ruber
- Surf/Black Scoter Melanitta perspicillata/americana
- scoter sp. Melanitta sp.
- large alcid sp. Alca/Uria sp.
- alcid sp. Alcidae sp.
- hawk sp. Accipitridae sp. (hawk sp.)
- Downy/Hairy Woodpecker Dryobates pubescens/villosus
- woodpecker sp. Picidae sp.
- finch sp. Fringillidae sp.
- Lesser/Greater Yellowlegs Tringa flavipes/melanoleuca
- tern sp. Sterninae sp.Details:
- Blue-winged/Cinnamon Teal Spatula discors/cyanoptera
- Domestic goose sp. (Domestic type) Anser sp. (Domestic type)Details:
- chickadee sp. Poecile sp.Details:
- wren sp. Troglodytidae sp.Details:
- Aythya sp. Aythya sp.Details:
- Sharp-shinned/Cooper's Hawk Accipiter striatus/cooperii
- House/Purple Finch Haemorhous mexicanus/purpureus
- peep sp. Calidris sp. (peep sp.)
- cormorant sp. Phalacrocoracidae sp.
- Greater/Lesser Scaup Aythya marila/affinis
- Short-billed/Long-billed Dowitcher Limnodromus griseus/scolopaceus
- Red/Red-necked Phalarope Phalaropus fulicarius/lobatusDetails:
- jaeger sp. Stercorarius sp. (jaeger sp.)
- American/Pacific Golden-Plover (Lesser Golden-Plover) Pluvialis dominica/fulva
- Common/Arctic Tern Sterna hirundo/paradisaea
- Western/Clark's Grebe Aechmophorus occidentalis/clarkiiDetails:
- Cackling/Canada Goose Branta hutchinsii/canadensisDetails:
- Common/Red-breasted Merganser Mergus merganser/serrator
- gull sp. Larinae sp.
- Larus sp. Larus sp.
- new world warbler sp. Parulidae sp.
- Alder/Willow Flycatcher (Traill's Flycatcher) Empidonax alnorum/trailliiDetails:
- Ruby-crowned/Golden-crowned Kinglet Corthylio calendula/Regulus satrapaDetails:
- Spizella sp. Spizella sp.
- blackbird sp. Icteridae sp.
- passerine sp. Passeriformes sp.
- duck sp. Anatidae (duck sp.)
- Buteo sp. Buteo sp.
- Empidonax sp. Empidonax sp.
- swallow sp. Hirundinidae sp.
- Accipiter sp. Accipiter sp.
- falcon sp. Falco sp.
- hummingbird sp. Trochilidae sp.
- new world sparrow sp. Passerellidae sp.
- Calidris sp. Calidris sp.Details:
- Common/Barrow's Goldeneye Bucephala clangula/islandica
- loon sp. Gavia sp.