species
11.
species
14.
species
16.
species
19.
species
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species
21.
species
25.
species
26.
species
34.
species
37.
species
48.
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61.
species
72.
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74.
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91.
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102.
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103.
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106.
species
107.
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108.
species
109.
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species
111.
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species
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species
126.
species
128.
species
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species
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species
138.
species
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species
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species
146.
species
153.
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159.
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177.
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279.
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286.
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288.
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294.
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296.
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313.
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315.
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482.
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496.
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512.
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530.
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532.
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535.
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541.
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548.
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species
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species
580.
species
581.
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582.
species
586.
species
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597.
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602.
species
606.
species
607.
species
614.
species
616.
species
617.
species
618.
species
619.
species
620.
species
625.
species
631.
species
632.
species
636.
species
637.
species
641.
species
644.
species
646.
species
648.
species
649.
species
651.
species
655.
species
659.
species
660.
species
662.
species
669.
species
670.
species
673.
species
674.
species
675.
species
677.
species
679.
species
680.
species
682.
Graylag x Canada Goose (hybrid)
Snow x Canada Goose (hybrid)
American x Black Oystercatcher (hybrid)
Red-naped x Red-breasted Sapsucker (hybrid)
Swan Goose x Canada Goose (hybrid)
Snow x Cackling Goose (hybrid)
Mallard x Mottled Duck (hybrid)
Ross's x Cackling Goose (hybrid)
Red-shouldered x Red-tailed Hawk (hybrid)
Ring-necked Duck x scaup sp. (hybrid)
Snow x Greater White-fronted Goose (hybrid)
Spotted x Eastern Towhee (hybrid)
Graylag x Swan Goose (hybrid)
Eurasian x American Wigeon (hybrid)
Gadwall x Mallard (hybrid)
Domestic goose sp. x Canada Goose (hybrid)
Glaucous x Glaucous-winged Gull (hybrid)
Tufted Duck x scaup sp. (hybrid)
Common x Barrow's Goldeneye (hybrid)
Mexican x Mottled Duck (hybrid)
Snow x Ross's Goose (hybrid)
Blue-winged x Cinnamon Teal (hybrid)
Canvasback x Ring-necked Duck (hybrid)
Bufflehead x Common Goldeneye (hybrid)
Yellow-bellied x Red-naped Sapsucker (hybrid)
Greater White-fronted x Canada Goose (hybrid)
Cinnamon x Green-winged Teal (hybrid)
Black-capped x Mountain Chickadee (hybrid)
Downy x Hairy Woodpecker (hybrid)
Mallard x Northern Pintail (hybrid)
Western x Glaucous-winged Gull (hybrid)
Rufous x Allen's Hummingbird (hybrid)
Greater White-fronted x Cackling Goose (hybrid)
Dark-eyed Junco x White-throated Sparrow (hybrid)
Northern x Tropical Parula (hybrid)
Mallard x Hawaiian Duck (hybrid)
Herring x Great Black-backed Gull (hybrid)
Cinnamon Teal x Northern Shoveler (hybrid)
American Wigeon x Mallard (hybrid)
Snow Goose x Brant (hybrid)
Mallard x Mexican Duck (hybrid)
Herring x Glaucous Gull (hybrid)
Altamira x Audubon's Oriole (hybrid)
Tufted x Black-crested Titmouse (hybrid)
Common Black x Red-shouldered Hawk (hybrid)
Anna's x Broad-billed Hummingbird (hybrid)
Wood Duck x Mallard (hybrid)
Snow/Ross's x Cackling/Canada Goose (hybrid)
Herring x Lesser Black-backed Gull (hybrid)
Redhead x scaup sp. (hybrid)
Common Goldeneye x Hooded Merganser (hybrid)
Herring x Glaucous-winged Gull (hybrid)
Redhead x Ring-necked Duck (hybrid)
Mallard x American Black Duck (hybrid)
Ring-necked Duck x Lesser Scaup (hybrid)
Magnolia x Yellow-rumped Warbler (hybrid)
Muscovy Duck x Mallard (hybrid)
Downy x Nuttall's Woodpecker (hybrid)
Carolina x Black-capped Chickadee (hybrid)
Anna's x Calliope Hummingbird (hybrid)
passerine sp.
Amazona sp.
Yellow-bellied/Red-naped Sapsucker
Bronzed/Brown-headed Cowbird
Great/Double-crested Cormorant
Black-bellied Plover/golden-plover sp.
Orchard/Hooded Oriole
Red-naped/Red-breasted Sapsucker
Greater/Lesser Scaup
Surf/Black Scoter
Black-capped/Mountain Chickadee
Cassin's/Western Kingbird
sapsucker sp.
Ruby-crowned/Golden-crowned Kinglet
Tropical/Couch's Kingbird
Thick-billed/Common Murre
Spotted/Eastern Towhee (Rufous-sided Towhee)
blackbird sp.
Parasitic/Pomarine Jaeger
shearwater sp.
Nuttall's/Ladder-backed Woodpecker
Yellow-crowned/Black-crowned Night Heron
nighthawk sp.
Snow/Ross's Goose
Trumpeter/Tundra Swan
ground dove/Inca Dove
parrot sp.
Boat-tailed/Great-tailed Grackle
Short-billed/Long-billed Dowitcher
Loggerhead/Northern Shrike
Sooty/Short-tailed Shearwater
estrildid finch sp.
Varied Thrush/American Robin
Western/Eastern Meadowlark
chickadee sp.
Tufted/Black-crested Titmouse
Sagebrush/Bell's Sparrow (Sage Sparrow)
Tree/Violet-green Swallow
Mallard/American Black Duck
new world sparrow sp.
Western/Semipalmated Sandpiper
Downy/Ladder-backed Woodpecker
Double-crested/Neotropic Cormorant
Anna's/Costa's Hummingbird
Sharp-shinned/Cooper's Hawk
large shorebird sp.
merganser sp.
waterfowl sp.
Zonotrichia sp.
Blue-winged/Cinnamon Teal
tanager sp. (Piranga sp.)
American Black/Mottled Duck
Eurasian/African Collared-Dove
Ruby-throated/Black-chinned Hummingbird
rosy-finch sp.
House/Purple Finch
Northern Cardinal/Pyrrhuloxia
Red-shouldered/Broad-winged Hawk
Louisiana/Northern Waterthrush
Mitred/Red-masked Parakeet
Common/Barrow's Goldeneye
bluebird sp.
Lesser/Greater Yellowlegs
Spizella sp./American Tree Sparrow
Common/Red-breasted Merganser
Bohemian/Cedar Waxwing
Western/Chihuahuan Meadowlark
moorhen/coot/gallinule sp.
Carolina/Black-capped Chickadee
California/Woodhouse's Scrub-Jay
yellow-bellied kingbird sp.
House/Eurasian Tree Sparrow
Herring/Glaucous-winged Gull
Cooper's Hawk/American Goshawk
Nelson's/Saltmarsh Sparrow (Sharp-tailed Sparrow)
Red-winged/Tricolored Blackbird
California/Gambel's Quail
hummingbird sp.
parakeet sp.
Psittacara sp.
woodpecker sp.
Passerina sp.
Northern/Gilded Flicker
Western/Glaucous-winged Gull
Acanthis/Spinus sp.
rail/crake sp.
Dark-eyed/Yellow-eyed Junco
gull/tern sp.
Oak/Juniper Titmouse (Plain Titmouse)
new world warbler sp.
Rufous/Allen's Hummingbird
Domestic goose sp. (Domestic type)
Golden-fronted/Red-bellied Woodpecker
Townsend's/Hermit Warbler
Brown/Long-billed Thrasher
Selasphorus sp.
Pacific/Winter Wren
Western/Eastern Cattle Egret
crow/raven sp.
Curve-billed/Bendire's Thrasher
storm-petrel sp. (white-rumped)
Red-crowned/Lilac-crowned Parrot
White-crowned/White-throated Sparrow
new world vulture sp.
lovebird sp.