species
49.
species
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52.
species
102.
species
110.
species
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species
509.
American x Black Oystercatcher (hybrid)
Western x Glaucous-winged Gull (hybrid)
Ring-necked Duck x scaup sp. (hybrid)
Herring x Glaucous-winged Gull (hybrid)
Yellow-bellied/Red-naped x Red-breasted Sapsucker (hybrid)
Red-naped x Red-breasted Sapsucker (hybrid)
Herring x Glaucous Gull (hybrid)
American Wigeon x Mallard (hybrid)
Glaucous x Glaucous-winged Gull (hybrid)
Muscovy Duck x Mallard (hybrid)
Anna's x Costa's Hummingbird (hybrid)
Townsend's x Hermit Warbler (hybrid)
White-crowned x Golden-crowned Sparrow (hybrid)
Yellow-bellied x Red-naped Sapsucker (hybrid)
Brown x Blue-footed Booby (hybrid)
Western x Clark's Grebe (hybrid)
Gadwall x Mallard (hybrid)
Mallard x Mexican Duck (hybrid)
Snow x Ross's Goose (hybrid)
Northern Shoveler x American Wigeon (hybrid)
Blue-winged x Cinnamon Teal (hybrid)
White-crowned x White-throated Sparrow (hybrid)
Cinnamon Teal x Northern Shoveler (hybrid)
Graylag x Swan Goose (hybrid)
Northern Shoveler x Mallard (hybrid)
Eurasian x American Wigeon (hybrid)
Rose-breasted x Black-headed Grosbeak (hybrid)
Downy x Nuttall's Woodpecker (hybrid)
Brewer's Blackbird x Great-tailed Grackle (hybrid)
Rufous/Allen's Hummingbird
hummingbird sp.
blackbird sp.
yellow-bellied kingbird sp.
Sharp-shinned/Cooper's Hawk
Empidonax sp.
cormorant sp.
large shorebird sp.
Cassin's/Western Kingbird
Red-winged/Tricolored Blackbird
Greater/Lesser Scaup
Domestic goose sp. (Domestic type)
Short-billed/Long-billed Dowitcher
shorebird sp.
passerine sp.
dabbling duck sp.
Dryobates sp.
Scripps's/Guadalupe Murrelet (Xantus's Murrelet)
diurnal raptor sp.
Cassin's/Plumbeous Vireo
Orchard/Hooded Oriole
Lesser/Greater Yellowlegs
Tree/Violet-green Swallow
new world sparrow sp.
Yellow-crowned/Black-crowned Night Heron
waterfowl sp.
Blue-winged/Cinnamon Teal
Calidris sp.
Yellow-bellied/Red-naped Sapsucker
storm-petrel sp. (dark-rumped)
Buteo sp.
sapsucker sp.
Parasitic/Pomarine Jaeger
Sooty/Short-tailed Shearwater
gull/tern sp.
longspur sp.
Tyrannus sp.
Purple/Cassin's Finch
Spizella sp.
Forster's/Common Tern
Masked/Nazca Booby
Common/Arctic Tern
Bullock's/Baltimore Oriole
Scripps's/Guadalupe/Craveri's Murrelet
new world flycatcher sp.
Long-tailed/Parasitic Jaeger
Amazona sp.
Chimney/Vaux's Swift
Red/Red-necked Phalarope
Pterodroma sp.
Rose-breasted/Black-headed Grosbeak
Cackling/Canada Goose
black-and-white shearwater sp.
Pheucticus sp.
Spinus sp.
Setophaga sp.
MacGillivray's/Mourning Warbler
storm-petrel sp. (white-rumped)
albatross sp.
American/Pacific Golden-Plover (Lesser Golden-Plover)
Arctic/Pacific Loon
white egret sp.
Scolopacidae sp.
Branta sp.
Anna's/Costa's Hummingbird
pewee sp. (Contopus sp.)
Leach's/Townsend's Storm-Petrel (white-rumped)
Leach's/Townsend's Storm-Petrel
nighthawk sp.
Aythya sp.
curlew sp.
Eurasian/African Collared-Dove
Pacific/Winter Wren
large alcid sp.
Glossy/White-faced Ibis
ibis sp.
Cliff/Cave Swallow
Ruby-crowned/Golden-crowned Kinglet
tanager sp. (Piranga sp.)
jay sp.
Cassin's/Blue-headed Vireo
Tachycineta sp.
Sagebrush/Bell's Sparrow (Sage Sparrow)
Ardea sp.
Hammond's/Dusky Flycatcher
Pica sp.
quail-dove sp.
Leiothlypis sp.
Myiarchus sp.
Western/Semipalmated Sandpiper
oystercatcher sp.
new world vulture sp.
Western/Glaucous-winged Gull
Black-throated Gray/Townsend's Warbler
golden-plover sp.
Laughing/Franklin's Gull
estrildid finch sp.
Chaetura sp.
parrot sp.
rail/crake sp.
Galapagos/Hawaiian Petrel (Dark-rumped Petrel)
new world quail sp.
Bay-breasted/Blackpoll Warbler
Leach's/Townsend's Storm-Petrel (dark-rumped)
Western/Eastern Wood-Pewee
Haemorhous sp.
Louisiana/Northern Waterthrush
solitary vireo sp.
nuthatch sp.
Eastern/Mexican Whip-poor-will
large falcon sp.
Gray/Dusky Flycatcher