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Bufflehead x Common Goldeneye (hybrid)
Spotted x Eastern Towhee (hybrid)
Common x Barrow's Goldeneye (hybrid)
goldeneye sp. x Hooded Merganser (hybrid)
Black x Eastern Phoebe (hybrid)
Rose-breasted x Black-headed Grosbeak (hybrid)
Mallard x Mexican/Mottled Duck (hybrid)
Mallard x Mottled Duck (hybrid)
Snow/Ross's x Cackling/Canada Goose (hybrid)
Western x Clark's Grebe (hybrid)
Double-crested x Neotropic Cormorant (hybrid)
Common Goldeneye x Hooded Merganser (hybrid)
Glaucous x Glaucous-winged Gull (hybrid)
American Wigeon x Mallard (hybrid)
Mallard x Mexican Duck (hybrid)
Black-capped x Mountain Chickadee (hybrid)
Herring x Glaucous Gull (hybrid)
Snow x Cackling Goose (hybrid)
Snow x Ross's Goose (hybrid)
Ross's x Cackling Goose (hybrid)
Ross's x Canada Goose (hybrid)
Herring x Lesser Black-backed Gull (hybrid)
Gadwall x Mallard (hybrid)
Laughing x Ring-billed Gull (hybrid)
Herring x Glaucous-winged Gull (hybrid)
Mallard x Northern Pintail (hybrid)
Greater White-fronted x Cackling Goose (hybrid)
Greater White-fronted x Canada Goose (hybrid)
Blue-winged x Cinnamon Teal (hybrid)
Bullock's x Baltimore Oriole (hybrid)
Snow x Canada Goose (hybrid)
Lazuli x Indigo Bunting (hybrid)
waterfowl sp.
Western/Eastern Meadowlark
Laughing/Franklin's Gull
pheasant sp.
Branta sp.
new world oriole sp.
Common/Yellow-billed Loon
Tyrannus sp.
Eurasian/African Collared-Dove
diurnal raptor sp.
Domestic goose sp. (Domestic type)
Golden/Bald Eagle
Red/Red-necked Phalarope
Double-crested/Neotropic Cormorant
nighthawk sp.
Long-eared/Short-eared Owl
Black-capped/Mountain Chickadee
towhee sp.
Herring/Glaucous-winged Gull
Cassin's/Blue-headed Vireo
Long-tailed/Parasitic Jaeger
tanager sp. (Piranga sp.)
Eastern/Chihuahuan Meadowlark
Cliff/Cave Swallow
Myiarchus sp.
yellow-bellied kingbird sp.
Gray/Dusky Flycatcher
Ruby-crowned/Golden-crowned Kinglet
bluebird sp.
Tree/Violet-green Swallow
Hammond's/Dusky Flycatcher
Cooper's Hawk/American Goshawk
Ruby-throated/Black-chinned Hummingbird
Cassin's/Western Kingbird
small falcon sp.
Common/Barrow's Goldeneye
parakeet sp.
Spotted/Eastern Towhee (Rufous-sided Towhee)
Common/Red-breasted Merganser
Trumpeter/Tundra Swan
Catharus sp.
Western/Semipalmated Sandpiper
phalarope sp.
Rose-breasted/Black-headed Grosbeak
Louisiana/Northern Waterthrush
Common/Arctic Tern
Alder/Willow Flycatcher (Traill's Flycatcher)
Western/Eastern Wood-Pewee
Bullock's/Baltimore Oriole
Short-billed/Long-billed Dowitcher
Yellow-bellied/Red-naped Sapsucker
Bohemian/Cedar Waxwing
Yellow-crowned/Black-crowned Night Heron
Spizella sp./American Tree Sparrow
Black-bellied Plover/golden-plover sp.
Spizella sp.
Sharp-shinned/Cooper's Hawk
Blue-winged/Cinnamon Teal
Loggerhead/Northern Shrike
Accipiter sp.
Lesser/Greater Yellowlegs