species
58.
species
63.
species
100.
species
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462.
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466.
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504.
Domestic goose sp. x Canada Goose (hybrid)
Magnolia x Yellow-rumped Warbler (hybrid)
Western x Glaucous-winged Gull (hybrid)
Red-naped x Red-breasted Sapsucker (hybrid)
Gadwall x Mallard (hybrid)
Downy x Nuttall's Woodpecker (hybrid)
Western x Clark's Grebe (hybrid)
Herring x Glaucous-winged Gull (hybrid)
Eurasian x American Wigeon (hybrid)
Blue-winged x Cinnamon Teal (hybrid)
Townsend's x Hermit Warbler (hybrid)
Red-crowned x Lilac-crowned Parrot (hybrid)
White-crowned x White-throated Sparrow (hybrid)
Black-throated Gray x Townsend's Warbler (hybrid)
Red-crowned x Red-lored Parrot (hybrid)
American x Black Oystercatcher (hybrid)
Anna's x Allen's Hummingbird (hybrid)
Sandwich x Elegant Tern (hybrid)
Swan Goose x Canada Goose (hybrid)
Cinnamon Teal x Northern Shoveler (hybrid)
Blue-winged Teal x Northern Shoveler (hybrid)
Yellow-bellied x Red-naped Sapsucker (hybrid)
Double-crested x Neotropic Cormorant (hybrid)
Mallard x Northern Pintail (hybrid)
Graylag x Canada Goose (hybrid)
Cape May x Yellow-rumped Warbler (hybrid)
Rose-breasted x Black-headed Grosbeak (hybrid)
Greater White-fronted x Canada Goose (hybrid)
Northern Shoveler x Gadwall (hybrid)
Glossy x White-faced Ibis (hybrid)
Muscovy Duck x Mallard (hybrid)
Blue-winged x Green-winged Teal (hybrid)
Herring x Glaucous Gull (hybrid)
Glaucous x Glaucous-winged Gull (hybrid)
Little Blue Heron x Snowy Egret (hybrid)
Rufous/Allen's Hummingbird
Short-billed/Long-billed Dowitcher
Amazona sp.
Bullock's/Baltimore Oriole
blackbird sp.
passerine sp.
Cassin's/Western Kingbird
Cassin's/Plumbeous Vireo
Domestic goose sp. (Domestic type)
tanager sp. (Piranga sp.)
Calidris sp.
Yellow-bellied/Red-naped Sapsucker
Yellow-crowned/Black-crowned Night Heron
new world flycatcher sp.
Sharp-shinned/Cooper's Hawk
Lesser/Greater Yellowlegs
Horned/Eared Grebe
Western/Glaucous-winged Gull
Townsend's/Hermit Warbler
sapsucker sp.
Cackling/Canada Goose
oystercatcher sp.
Selasphorus sp.
Common/Red-breasted Merganser
Downy/Hairy Woodpecker
Spizella sp.
Parasitic/Pomarine Jaeger
Arctic/Pacific Loon
parakeet sp.
murrelet sp.
shearwater sp.
Black-bellied Plover/golden-plover sp.
Rose-breasted/Black-headed Grosbeak
new world goldfinch sp.
Blue-winged/Cinnamon Teal
diurnal raptor sp.
Red-naped/Red-breasted Sapsucker
Chimney/Vaux's Swift
Sooty/Short-tailed Shearwater
Mitred/Red-masked Parakeet
small falcon sp.
new world oriole sp.
yellow-bellied kingbird sp.
Herring/Glaucous-winged Gull
nuthatch sp.
pigeon/dove sp.
white egret sp.
Double-crested/Neotropic Cormorant
parrot sp.
Red/Red-necked Phalarope
Anna's/Costa's Hummingbird
large falcon sp.
Forster's/Common Tern
Myiarchus sp.
Lazuli/Indigo Bunting
large parakeet sp. (former Aratinga sp.)
dabbling duck sp.
Cassin's/Blue-headed Vireo
Long-tailed/Parasitic Jaeger
Orchard/Hooded Oriole
phalarope sp.
storm-petrel sp. (dark-rumped)
Passerina sp.
new world quail sp.
Eurasian/African Collared-Dove
large shorebird sp.
Scripps's/Craveri's Murrelet
Thalasseus sp.
Western/Eastern Wood-Pewee
Masked/Nazca Booby
pewee sp. (Contopus sp.)
Hammond's/Dusky Flycatcher
Zonotrichia sp.
waterfowl sp.
Psittacara sp.
merganser sp.
gnatcatcher sp.
Setophaga sp.
Philadelphia/Warbling Vireo
Leach's/Townsend's Storm-Petrel (dark-rumped)
Scripps's/Guadalupe/Craveri's Murrelet
Leach's/Townsend's Storm-Petrel (white-rumped)
large tern sp.
solitary vireo sp.
Red-winged/Tricolored Blackbird
nightjar sp.
Tringa sp.
Zosterops sp.
Chaetura sp.
MacGillivray's/Mourning Warbler
Long-eared/Short-eared Owl
Ruby-throated/Black-chinned Hummingbird
Accipiter sp.
Gray/Dusky Flycatcher
Tree/Violet-green Swallow
Tyrannus sp.
bluebird sp.
large rail sp.
pipit sp.
Arctic/Kamchatka Leaf Warbler
Rock/Band-tailed Pigeon
small plover sp.
rail/crake sp.
American/Black Oystercatcher
Eurasian/American Wigeon
storm-petrel sp. (white-rumped)
Scripps's/Guadalupe Murrelet (Xantus's Murrelet)
White-winged/Yellow-chevroned Parakeet
Lonchura sp.
estrildid finch sp.
old world quail sp.
Pacific/Winter Wren
Western/Semipalmated Sandpiper
Glossy/White-faced Ibis
nighthawk sp.
Bay-breasted/Blackpoll Warbler
Thick-billed/Common Murre
American/Pacific Golden-Plover (Lesser Golden-Plover)
Dryobates sp.
Sagebrush/Bell's Sparrow (Sage Sparrow)
Haemorhous sp.
Purple/Cassin's Finch
waxbill sp.
Louisiana/Northern Waterthrush