species
56.
species
58.
species
108.
species
125.
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541.
American x Black Oystercatcher (hybrid)
Western x Clark's Grebe (hybrid)
Muscovy Duck x Mallard (hybrid)
Western x Glaucous-winged Gull (hybrid)
Graylag x Swan Goose (hybrid)
Townsend's x Hermit Warbler (hybrid)
Nuttall's x Ladder-backed Woodpecker (hybrid)
Herring x Glaucous-winged Gull (hybrid)
Herring x Glaucous Gull (hybrid)
Red-crowned x Lilac-crowned Parrot (hybrid)
Downy x Nuttall's Woodpecker (hybrid)
Red-naped x Red-breasted Sapsucker (hybrid)
Snow x Greater White-fronted Goose (hybrid)
California x Gambel's Quail (hybrid)
Gadwall x Mallard (hybrid)
Eurasian x American Wigeon (hybrid)
Sandwich x Elegant Tern (hybrid)
Blue-winged x Cinnamon Teal (hybrid)
Yellow-rumped x Townsend's Warbler (hybrid)
Double-crested x Neotropic Cormorant (hybrid)
White-crowned x Golden-crowned Sparrow (hybrid)
California x Crissal Thrasher (hybrid)
Cinnamon Teal x Northern Shoveler (hybrid)
Snow x Ross's Goose (hybrid)
Anna's x Costa's Hummingbird (hybrid)
Glossy x White-faced Ibis (hybrid)
Yellow-rumped x Grace's Warbler (hybrid)
Glaucous x Glaucous-winged Gull (hybrid)
Yellow-bellied x Red-naped Sapsucker (hybrid)
Lazuli x Indigo Bunting (hybrid)
Mallard x Northern Pintail (hybrid)
Anna's x Allen's Hummingbird (hybrid)
Anna's Hummingbird x Selasphorus sp. (hybrid)
Western Kingbird x Scissor-tailed Flycatcher (hybrid)
Bullock's x Baltimore Oriole (hybrid)
Ring-necked Duck x Lesser Scaup (hybrid)
Ring-necked Duck x scaup sp. (hybrid)
Great Knot x Surfbird (hybrid)
Golden-winged x Blue-winged Warbler (hybrid)
Tufted Duck x scaup sp. (hybrid)
parakeet sp.
Rufous/Allen's Hummingbird
Short-billed/Long-billed Dowitcher
Nuttall's/Ladder-backed Woodpecker
Sharp-shinned/Cooper's Hawk
Western/Clark's Grebe
Lesser/Greater Yellowlegs
large tern sp.
new world warbler sp.
Amazona sp.
Cassin's/Western Kingbird
woodpecker sp.
Blue-winged/Cinnamon Teal
Red-winged/Tricolored Blackbird
diurnal raptor sp.
sapsucker sp.
new world quail sp.
Elegant/Royal Tern
Parasitic/Pomarine Jaeger
Domestic goose sp. (Domestic type)
shearwater sp.
yellow-bellied kingbird sp.
parrot sp.
Yellow-crowned/Black-crowned Night Heron
goose sp.
California/Gambel's Quail
new world oriole sp.
Sterna sp.
Red-crowned/Lilac-crowned Parrot
rail/crake sp.
large shorebird sp.
Toxostoma sp.
large parakeet sp. (former Aratinga sp.)
Catharus sp.
Anna's/Costa's Hummingbird
American/Black Oystercatcher
merganser sp.
Domestic lovebird sp. (Domestic type)
Empidonax sp.
Sagebrush/Bell's Sparrow (Sage Sparrow)
large falcon sp.
tanager sp. (Piranga sp.)
moorhen/coot/gallinule sp.
Western/Glaucous-winged Gull
Snow/Ross's Goose
Bullock's/Baltimore Oriole
Sooty/Short-tailed Shearwater
Leach's/Townsend's/Ainley's Storm-Petrel
Cackling/Canada Goose
Masked/Nazca Booby
Cassin's/Plumbeous Vireo
Purple/Cassin's Finch
Passerina sp.
solitary vireo sp.
nighthawk sp.
Orchard/Hooded Oriole
black-and-white shearwater sp.
Rose-breasted/Black-headed Grosbeak
ground dove/Inca Dove
Hammond's/Dusky Flycatcher
nuthatch sp.
storm-petrel sp.
Red/Red-necked Phalarope
pewee sp. (Contopus sp.)
Scripps's/Guadalupe/Craveri's Murrelet
Leach's/Townsend's Storm-Petrel (white-rumped)
Common/Arctic Tern
Leiothlypis sp.
Philadelphia/Warbling Vireo
Bronzed/Brown-headed Cowbird
Cassin's/Blue-headed Vireo
Long-tailed/Parasitic Jaeger
storm-petrel sp. (dark-rumped)
Leach's/Townsend's Storm-Petrel
Myiarchus sp.
Leach's/Townsend's Storm-Petrel (dark-rumped)
Scripps's/Craveri's Murrelet
murrelet sp.
Scripps's/Guadalupe Murrelet (Xantus's Murrelet)
Pheucticus sp.
white-eye sp.
Golden-winged/Blue-winged Warbler
Selasphorus sp.
new world flycatcher sp.
Black-bellied Plover/golden-plover sp.
procellariid sp.
bluebird sp.
Zonotrichia sp.
Yellow-bellied/Red-naped Sapsucker
new world goldfinch sp.
Common/Yellow-billed Loon
storm-petrel sp. (white-rumped)
white-winged gull sp.
Herring/Iceland Gull
longspur sp.
Chimney/Vaux's Swift
flamingo sp.
Double-crested/Neotropic Cormorant
Mallard/Mexican Duck
oystercatcher sp.
American/Pacific Golden-Plover (Lesser Golden-Plover)
Tree/Violet-green Swallow
large macaw sp.
albatross sp.
Trumpeter/Tundra Swan
Hepatic/Summer Tanager
Spotted/Eastern Towhee (Rufous-sided Towhee)
Red-naped/Red-breasted Sapsucker
Alder/Willow Flycatcher (Traill's Flycatcher)
Mitred/Red-masked Parakeet
Cliff/Cave Swallow
Chaetura sp.
Zosterops sp.
Townsend's/Hermit Warbler
frigatebird sp.
Glossy/White-faced Ibis
estrildid finch sp.
House/Purple Finch
Eurasian/American Wigeon
Setophaga sp.
swan sp.
gull/tern sp.
Long-eared/Short-eared Owl
lovebird sp.
Laughing/Franklin's Gull
Surf/Black Scoter
paradise-whydah sp.
Hydrobates sp.
Louisiana/Northern Waterthrush
Tropical/Couch's Kingbird
American/Greater Flamingo
Scolopacidae sp.
waterfowl sp.
Psittacara sp.
Connecticut/MacGillivray's/Mourning Warbler
pheasant sp.
Common/Ruddy Ground Dove
Varied Thrush/American Robin
Sturnella meadowlark sp.
ibis sp.
Thalasseus sp.
White-winged/Yellow-chevroned Parakeet
Timaliidae sp.
Pacific/Winter Wren
Western/Eastern Wood-Pewee
Eastern/Mexican Whip-poor-will