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541.
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624.
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629.
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664.
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species
702.
species
732.
species
733.
species
735.
species
739.
species
756.
species
758.
species
764.
species
767.
species
769.
species
775.
species
787.
species
813.
species
841.
species
849.
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853.
species
877.
species
882.
species
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890.
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species
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species
915.
species
929.
species
934.
species
948.
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species
953.
species
963.
species
978.
species
979.
species
980.
species
992.
species
1003.
species
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species
1016.
species
1025.
species
1029.
species
1030.
species
1058.
species
1062.
species
1086.
species
1117.
species
1118.
species
1120.
species
1131.
species
1133.
species
1134.
species
1135.
species
1136.
species
1137.
species
1139.
species
1140.
species
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species
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species
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species
1145.
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species
1147.
species
1148.
species
1149.
species
1150.
species
1151.
species
1154.
species
1160.
Curlew x Pectoral Sandpiper (hybrid)
Nuttall's x Hairy Woodpecker (hybrid)
Wood x Mandarin Duck (hybrid)
Tree x Barn Swallow (hybrid)
Mountain x Boreal Chickadee (hybrid)
Black-tailed x Black-capped Gnatcatcher (hybrid)
Brewer's Blackbird x Great-tailed Grackle (hybrid)
White-rumped x Pectoral Sandpiper (hybrid)
Herring x Iceland Gull (hybrid)
Swainson's x Rough-legged Hawk (hybrid)
Hepatic x Flame-colored Tanager (hybrid)
Gray-crowned x Common Yellowthroat (hybrid)
Common Yellowthroat x Yellow Warbler (hybrid)
Grace's x Black-throated Gray Warbler (hybrid)
Veery x Bicknell's Thrush (hybrid)
Philadelphia x Red-eyed Vireo (hybrid)
Violet-green x Cliff Swallow (hybrid)
Tree x Violet-green Swallow (hybrid)
Lucifer x Anna's Hummingbird (hybrid)
Violet-green x Northern Rough-winged Swallow (hybrid)
Great Knot x Surfbird (hybrid)
Red Crossbill x Pine Siskin (hybrid)
Dusky x Sharp-tailed Grouse (hybrid)
Common Yellowthroat x Rufous-capped Warbler (hybrid)
Magnolia x Black-throated Blue Warbler (hybrid)
Nashville x Magnolia Warbler (hybrid)
Brant x Cackling Goose (hybrid)
Magnolia x Chestnut-sided Warbler (hybrid)
Blue-winged x Prairie Warbler (hybrid)
Ruby-throated x Broad-tailed Hummingbird (hybrid)
Tropical x Northern Mockingbird (hybrid)
Clay-colored x Brewer's Sparrow (hybrid)
Orange-crowned x Nashville Warbler (hybrid)
Sandhill x Whooping Crane (hybrid)
Couch's x Western Kingbird (hybrid)
White-winged x Yellow-chevroned Parakeet (hybrid)
Warbling x Red-eyed Vireo (hybrid)
Calliope x Broad-tailed Hummingbird (hybrid)
Painted x Slate-throated Redstart (hybrid)
Mallard x Redhead (hybrid)
Peregrine x Prairie Falcon (hybrid)
Yellow-rumped x Black-throated Gray Warbler (hybrid)
Hooded x Yellow Warbler (hybrid)
Common x Hoary Redpoll (hybrid)
Western x Eastern Screech-Owl (hybrid)
Yellow-rumped x Yellow-throated Warbler (hybrid)
Cliff x Cave Swallow (hybrid)
Snow x McKay's Bunting (hybrid)
Spectacled x King Eider (hybrid)
Northern Bobwhite x Scaled Quail (hybrid)
Ring-necked x Tufted Duck (hybrid)
American Wigeon x American Black Duck (hybrid)
Chestnut-sided x Black-throated Blue Warbler (hybrid)
Wood Duck x Hooded Merganser (hybrid)
Cape May x Yellow-rumped Warbler (hybrid)
Lesser x American Goldfinch (hybrid)
Ring-necked x Green Pheasant (hybrid)
Emperor x Cackling Goose (hybrid)
Magnolia x Palm Warbler (hybrid)
Summer x Scarlet Tanager (hybrid)
Scarlet Tanager x Rose-breasted Grosbeak (hybrid)
Rufous x Broad-tailed Hummingbird (hybrid)
House x Fish Crow (hybrid)
Crimson x Eastern Rosella (hybrid)
Western x Eastern Wood-Pewee (hybrid)
Costa's x Broad-billed Hummingbird (hybrid)
Palm x Yellow-rumped Warbler (hybrid)
American Redstart x Yellow Warbler (hybrid)
Chipping x Field Sparrow (hybrid)
Yellow x Black-throated Blue Warbler (hybrid)
Red-shouldered x Broad-winged Hawk (hybrid)
Emperor x Greater White-fronted Goose (hybrid)
Eurasian Wigeon x Northern Pintail (hybrid)
Canvasback x scaup sp. (hybrid)
Mallard x Eastern Spot-billed Duck (hybrid)
Anna's x Calliope Hummingbird (hybrid)
Black x Say's Phoebe (hybrid)
Song x Lincoln's Sparrow (hybrid)
Black-chinned x Rufous Hummingbird (hybrid)
Yellow x Prairie Warbler (hybrid)
Yellow-crowned x Black-crowned Night Heron (hybrid)
Western x Eastern Meadowlark (hybrid)
American Redstart x Northern Parula (hybrid)
Glaucous x Slaty-backed Gull (hybrid)
Northern Bobwhite x California Quail (hybrid)
Green-tailed x Spotted Towhee (hybrid)
Kentucky Warbler x Common Yellowthroat (hybrid)
Clay-colored x Field Sparrow (hybrid)
Ruddy x Common Shelduck (hybrid)
Common Gallinule x American Coot (hybrid)
Rivoli's x Berylline Hummingbird (hybrid)
Sandhill x Common Crane (hybrid)
Northern Shoveler x American Wigeon (hybrid)
Blue-and-yellow x Scarlet Macaw (hybrid)
Mountain x Chestnut-backed Chickadee (hybrid)
Indigo x Painted Bunting (hybrid)
Redhead x Greater Scaup (hybrid)
Gadwall x Green-winged Teal (hybrid)
Curve-billed x Long-billed Thrasher (hybrid)
Little Blue x Tricolored Heron (hybrid)
Ross's x Greater White-fronted Goose (hybrid)
Grasshopper x Savannah Sparrow (hybrid)
California x Crissal Thrasher (hybrid)
Lapland Longspur x Snow Bunting (hybrid)
Varied x Painted Bunting (hybrid)
Cerulean Warbler x Northern Parula (hybrid)
Blue-winged Teal x American Wigeon (hybrid)
MacGillivray's x Mourning Warbler (hybrid)
Dunlin x White-rumped Sandpiper (hybrid)
Lucifer x Costa's Hummingbird (hybrid)
Dark-eyed x Yellow-eyed Junco (hybrid)
Buff-breasted x White-rumped Sandpiper (hybrid)
Tennessee x Nashville Warbler (hybrid)
Yellow-breasted Chat x new world oriole sp. (hybrid)
Brown x Blue-footed Booby (hybrid)
Tricolored Heron x Snowy Egret (hybrid)
Graylag x Swan Goose (hybrid)
Tropical x Gray Kingbird (hybrid)
Yellow-throated x Blue-headed Vireo (hybrid)
Summer x Western Tanager (hybrid)
Golden x Lady Amherst's Pheasant (hybrid)
Couch's Kingbird x Scissor-tailed Flycatcher (hybrid)
White x Scarlet Ibis (hybrid)
Black-chinned x Costa's Hummingbird (hybrid)
Hairy x White-headed Woodpecker (hybrid)
Mallard x Ring-necked Duck (hybrid)
Boat-tailed x Great-tailed Grackle (hybrid)
Western x Mountain Bluebird (hybrid)
Dark-eyed Junco x White-crowned Sparrow (hybrid)
Trumpeter x Whooper Swan (hybrid)
Mute x Whooper Swan (hybrid)
Common x Great-tailed Grackle (hybrid)
Trumpeter x Tundra Swan (hybrid)
Barrow's Goldeneye x Hooded Merganser (hybrid)
Surf x White-winged Scoter (hybrid)
Ladder-backed x Hairy Woodpecker (hybrid)
MacGillivray's Warbler x Common Yellowthroat (hybrid)
Steller's Jay x Woodhouse's Scrub-Jay (hybrid)
Black-throated Gray x Hermit Warbler (hybrid)
Cape May x Magnolia Warbler (hybrid)
King x Common Eider (hybrid)
Sharp-tailed Grouse x Greater Prairie-Chicken (hybrid)
Northern Parula x Yellow-throated Warbler (hybrid)
Black-capped x White-eyed Vireo (hybrid)
White-crowned x Harris's Sparrow (hybrid)
Yellow-rumped x Grace's Warbler (hybrid)
Black-necked Stilt x American Avocet (hybrid)
Greater Sage-Grouse x Sharp-tailed Grouse (hybrid)
Snowy x Little Egret (hybrid)
Bay-breasted x Blackburnian Warbler (hybrid)
Ruddy Turnstone x White-rumped Sandpiper (hybrid)
Chipping x Clay-colored Sparrow (hybrid)
Spotted x Barred Owl (hybrid)
Mourning Warbler x Common Yellowthroat (hybrid)
Pine Siskin x American Goldfinch (hybrid)
Western x Eastern Kingbird (hybrid)
Nelson's x Saltmarsh Sparrow (hybrid)
King x Clapper Rail (hybrid)
Bay-breasted x Blackpoll Warbler (hybrid)
Oriental Turtle-Dove x Eurasian Collared-Dove (hybrid)
Western x Chihuahuan Meadowlark (hybrid)
Northern Parula x Black-throated Gray Warbler (hybrid)
Common x Roseate Tern (hybrid)
Thick-billed x Common Murre (hybrid)
Common x Arctic Tern (hybrid)
Colima x Virginia's Warbler (hybrid)
Great Egret x Great Blue Heron (hybrid)
Black-chinned x Broad-billed Hummingbird (hybrid)
Eastern x Mountain Bluebird (hybrid)
Barn x Cave Swallow (hybrid)
Little Blue Heron x Snowy Egret (hybrid)
Yellow-bellied x Red-breasted Sapsucker (hybrid)
Black-chinned x Calliope Hummingbird (hybrid)
Barn x Cliff Swallow (hybrid)
Sandwich x Elegant Tern (hybrid)
Calliope x Rufous Hummingbird (hybrid)
Bahama x Northern Mockingbird (hybrid)
Rose-breasted x Black-headed Grosbeak (hybrid)
Black-chinned x Anna's Hummingbird (hybrid)
Black-chinned x Broad-tailed Hummingbird (hybrid)
Lucifer x Black-chinned Hummingbird (hybrid)
Glaucous-winged x Slaty-backed Gull (hybrid)
Western x Flame-colored Tanager (hybrid)
American Redstart x Magnolia Warbler (hybrid)
Broad-billed x Violet-crowned Hummingbird (hybrid)
Ruby-throated x Black-chinned Hummingbird (hybrid)
Herring x Slaty-backed Gull (hybrid)
Townsend's x Black-throated Green Warbler (hybrid)
Brewster's Warbler (hybrid)
Golden-winged x Blue-winged Warbler (hybrid)
Steller's Jay x California Scrub-Jay (hybrid)
Yellow-rumped x Hermit Warbler (hybrid)
Song x Swamp Sparrow (hybrid)
Mallard x Pacific Black Duck (hybrid)
Anna's x Allen's Hummingbird (hybrid)
Lazuli x Indigo Bunting (hybrid)
Double-crested x Neotropic Cormorant (hybrid)
Eurasian x African Collared-Dove (hybrid)
Kelp x Herring Gull (hybrid)
Eurasian Collared-Dove x Mourning Dove (hybrid)
Northern x Gilded Flicker (hybrid)
Steller's x Blue Jay (hybrid)
Bufflehead x Hooded Merganser (hybrid)
Golden-crowned x White-throated Sparrow (hybrid)
Mountain x Mexican Chickadee (hybrid)
Canyon x Spotted Towhee (hybrid)
Gadwall x American Wigeon (hybrid)
Gray-crowned x Black Rosy-Finch (hybrid)
Fischer's x Yellow-collared Lovebird (hybrid)
Black-headed x Ring-billed Gull (hybrid)
goldeneye sp. x Hooded Merganser (hybrid)
Red-crowned x Red-lored Parrot (hybrid)
Red-whiskered x Red-vented Bulbul (hybrid)
Mallard x Green-winged Teal (hybrid)
Cooper's Hawk x American Goshawk (hybrid)
Greater White-fronted x Cackling/Canada Goose (hybrid)
Barnacle x Cackling Goose (hybrid)
White-crowned x White-throated Sparrow (hybrid)
Barnacle x Canada Goose (hybrid)
California x Gambel's Quail (hybrid)
Hooded x Common Merganser (hybrid)
Blue-winged x Green-winged Teal (hybrid)
Dark-eyed Junco x White-throated Sparrow (hybrid)
Canvasback x Ring-necked Duck (hybrid)
Red-crowned x Lilac-crowned Parrot (hybrid)
Ross's x Canada Goose (hybrid)
Redhead x scaup sp. (hybrid)
Greater White-fronted x Cackling Goose (hybrid)
White-crowned x Golden-crowned Sparrow (hybrid)
Red-tailed x Rough-legged Hawk (hybrid)
White x Salmon-crested Cockatoo (hybrid)
Red-tailed x Ferruginous Hawk (hybrid)
Canvasback x Redhead (hybrid)
Laysan x Black-footed Albatross (hybrid)
Bufflehead x goldeneye sp. (hybrid)
Magnolia x Yellow-rumped Warbler (hybrid)
Northern Shoveler x Mallard (hybrid)
Snow/Ross's x Cackling/Canada Goose (hybrid)
Western Kingbird x Scissor-tailed Flycatcher (hybrid)
Anna's x Costa's Hummingbird (hybrid)
Yellow-bellied x Red-naped Sapsucker (hybrid)
Great Black-backed x Glaucous Gull (hybrid)
American Wigeon x Green-winged Teal (hybrid)
Black-throated Gray x Townsend's Warbler (hybrid)
Cinnamon x Green-winged Teal (hybrid)
Anna's x Broad-billed Hummingbird (hybrid)
Tufted Duck x Lesser Scaup (hybrid)
Downy x Ladder-backed Woodpecker (hybrid)
House x Eurasian Tree Sparrow (hybrid)
Ring-necked Duck x Greater Scaup (hybrid)
Tufted Duck x Greater Scaup (hybrid)
Yellow-bellied/Red-naped x Red-breasted Sapsucker (hybrid)
Laughing x Ring-billed Gull (hybrid)
House x Purple Finch (hybrid)
Ring-necked Duck x scaup sp. (hybrid)
Wood Duck x Mallard (hybrid)
Herring x Great Black-backed Gull (hybrid)
Black-bellied x Fulvous Whistling-Duck (hybrid)
American Wigeon x Northern Pintail (hybrid)
Ross's x Cackling Goose (hybrid)
Anna's Hummingbird x Selasphorus sp. (hybrid)
Golden-fronted x Red-bellied Woodpecker (hybrid)
Gadwall x Northern Pintail (hybrid)
Canyon x Abert's Towhee (hybrid)
Northern Pintail x Green-winged Teal (hybrid)
Herring x Glaucous Gull (hybrid)
Herring x Lesser Black-backed Gull (hybrid)
Snow Goose x Brant (hybrid)
Northern Shoveler x Gadwall (hybrid)
Spotted x Eastern Towhee (hybrid)
Ring-necked Duck x Lesser Scaup (hybrid)
Redhead x Ring-necked Duck (hybrid)
Herring x California Gull (hybrid)
Downy x Hairy Woodpecker (hybrid)
Redhead x Lesser Scaup (hybrid)
Snow x Cackling Goose (hybrid)
Downy x Nuttall's Woodpecker (hybrid)
Snow x Greater White-fronted Goose (hybrid)
Glaucous x Glaucous-winged Gull (hybrid)
Cinnamon Teal x Northern Shoveler (hybrid)
Yellow-rumped x Townsend's Warbler (hybrid)
Northern x Tropical Parula (hybrid)
American x Black Oystercatcher (hybrid)
Lawrence's Warbler (hybrid)
Anna's x Rufous Hummingbird (hybrid)
Rufous x Allen's Hummingbird (hybrid)
Townsend's x Hermit Warbler (hybrid)
Swan Goose x Canada Goose (hybrid)
Black x Eastern Phoebe (hybrid)
Mallard x Mexican/Mottled Duck (hybrid)
Mute x Trumpeter Swan (hybrid)
Muscovy Duck x Mallard (hybrid)
Blue-winged Teal x Northern Shoveler (hybrid)
Mexican x Mottled Duck (hybrid)
Black-capped x Mountain Chickadee (hybrid)
Common Goldeneye x Hooded Merganser (hybrid)
Common x Barrow's Goldeneye (hybrid)
Northern Cardinal x Pyrrhuloxia (hybrid)
Scaled x Gambel's Quail (hybrid)
Red-shouldered x Red-tailed Hawk (hybrid)
Bullock's x Baltimore Oriole (hybrid)
Gadwall x Mallard (hybrid)
Greater White-fronted x Canada Goose (hybrid)
Nuttall's x Ladder-backed Woodpecker (hybrid)
Graylag x Canada Goose (hybrid)
Eurasian x American Wigeon (hybrid)
Glossy x White-faced Ibis (hybrid)
Blue-winged x Cinnamon Teal (hybrid)
Snow x Canada Goose (hybrid)
Greater x Lesser Prairie-Chicken (hybrid)
Carolina x Black-capped Chickadee (hybrid)
Mallard x Northern Pintail (hybrid)
Common Black x Red-shouldered Hawk (hybrid)
Tufted Duck x scaup sp. (hybrid)
Red-naped x Red-breasted Sapsucker (hybrid)
Bufflehead x Common Goldeneye (hybrid)
Western x Clark's Grebe (hybrid)
Tufted x Black-crested Titmouse (hybrid)
Mallard x Hawaiian Duck (hybrid)
Altamira x Audubon's Oriole (hybrid)
Herring x Glaucous-winged Gull (hybrid)
Snow x Ross's Goose (hybrid)
Domestic goose sp. x Canada Goose (hybrid)
Mallard x Mexican Duck (hybrid)
Western x Glaucous-winged Gull (hybrid)
Mallard x American Black Duck (hybrid)
American Wigeon x Mallard (hybrid)
Mallard x Mottled Duck (hybrid)
Whimbrel/Eurasian Curlew
hornbill sp.
Snowy/Tristan/Antipodean Albatross
Timaliidae sp.
large toucan sp.
rainbow lorikeet sp.
Snowy/Kentish Plover
Streaked/Sulphur-bellied Flycatcher
Dusky/Naumann's Thrush
Red/Black Kite
Siberian/Amur Stonechat
Morelet's/Cinnamon-rumped Seedeater
Eurasian/Oriental Skylark
White-capped/Salvin's/Chatham Albatross
Trindade/Herald Petrel
Atlantic/Indian Yellow-nosed Albatross
Western/Eastern Yellow Wagtail
Sporophila sp.
small albatross sp.
Greater/Gunnison Sage-Grouse
violetear sp.
Euplectes sp.
Geranoaetus/Buteo sp.
Serinus sp.
large albatross sp.
cordonbleu sp.
waxbill sp.
Myioborus sp.
Glaucidium sp.
Galapagos/Hawaiian Petrel (Dark-rumped Petrel)
paradise-whydah sp.
Northern/Great Gray Shrike
Garganey/Green-winged Teal
Tropical/Northern Mockingbird
Mississippi/Plumbeous Kite
white-eye sp.
Ash-throated/Nutting's Flycatcher
Black-throated/White-throated Magpie-Jay
small bittern sp.
Far Eastern/Eurasian Curlew
Common/Rain Quail
Gray-streaked/Dark-sided Flycatcher
Forpus sp.
Arctic/Kamchatka Leaf Warbler
Bank Swallow/Pale Martin
Japanese Leaf/Arctic/Kamchatka Leaf Warbler
coot sp.
Ploceus sp.
Yellow-legged/Lesser Black-backed Gull
Lesser/Greater Roadrunner
Striated/Green Heron
Vidua sp.
Yellow-browed/Hume's Warbler
Great/Medium Egret
myna/starling sp.
Velvet/White-winged/Stejneger's Scoter
elaenia sp. (genus Elaenia)
Hydrobates sp. (Band-rumped complex)
Black-throated Gray/Townsend's/Hermit Warbler
Red-legged/Rock Partridge
Tree/Olive-backed Pipit
Patagioenas sp.
swamphen sp.
Greater/Lesser White-fronted Goose
large macaw sp.
Zosterops sp.
Red-billed/Red-tailed Tropicbird
Shiny/Bronzed Cowbird
lovebird sp.
stilt/avocet sp.
Ridgway's/Mangrove/Clapper Rail
Tundra/Whooper Swan
old world warbler sp.
Bullock's/Black-backed Oriole
Red-eyed/Chivi Vireo
Scarlet-fronted/Cordilleran Parakeet
lapwing sp.
Haliaeetus/Icthyophaga sp.
Chlidonias sp.
Grasshopper/Henslow's Sparrow
whydah sp.
eclectus sp.
Oriental/Eurasian Magpie
Common/Black Scoter
harrier sp.
Brotogeris sp.
Dark-eyed Junco/Pine Warbler
Red-eyed/Black-whiskered Vireo
tanager sp. (Thraupidae sp.)
old world quail sp.
Emberiza sp.
quail-dove sp.
Taiga/Tundra Bean-Goose
Common/Oriental Cuckoo
Common/Antillean Nighthawk
Chipping Sparrow/Worm-eating Warbler
Thalasseus sp.
Cory's/Cape Verde Shearwater
Spotted/Barred Owl
Psittacula sp.
Leach's/Townsend's Storm-Petrel (dark-rumped)
sand-plover sp.
vireo sp. (Red-eyed Vireo complex)
Red-necked/Little Stint
small swift sp.
Hudsonian/Marbled Godwit
Procellaria sp.
Smooth-billed/Groove-billed Ani
Long-tailed/Pomarine Jaeger
flamingo sp.
Oceanites sp.
Leach's/Townsend's Storm-Petrel
Phylloscopus sp.
Hepatic/Summer Tanager
yellowthroat sp.
screech-owl sp.
Connecticut/MacGillivray's/Mourning Warbler
Petrochelidon sp.
Pallas's/Reed Bunting
pygmy-owl/saw-whet owl sp.
Hen/Northern Harrier
Black-throated Gray/Townsend's Warbler
White-winged/Stejneger's Scoter
Leach's/Townsend's Storm-Petrel (white-rumped)
Scripps's/Guadalupe/Craveri's Murrelet
Pheucticus sp.
Philadelphia/Red-eyed Vireo
Black-legged/Red-legged Kittiwake
Coccyzus sp.
Hydrobates sp.
Shiny/Brown-headed Cowbird
Eastern/Chihuahuan Meadowlark
Purple/Rock Sandpiper
pewee sp. (Contopus sp.)
cuckoo sp. (Cuculidae sp.)
MacGillivray's/Mourning Warbler
Gray-cheeked/Bicknell's Thrush
Common/Spotted Sandpiper
LeConte's/Nelson's Sparrow
Red-eyed/Yellow-green Vireo
Clay-colored/Brewer's Sparrow
Sharp-tailed/Pectoral Sandpiper
Western Cattle/Yellow-billed Egret
Long-tailed/Parasitic Jaeger
Cookilaria petrel sp.
Cory's/Great Shearwater
Snow/McKay's Bunting
Common/Arctic Tern
Alder/Willow Flycatcher (Traill's Flycatcher)
Thraupidae sp.
Red/Cassia Crossbill
new world martin sp. (Progne sp.)
Masked/Nazca Booby
Scripps's/Craveri's Murrelet
Passer sp.
American/Greater Flamingo
Leach's/Townsend's/Ainley's Storm-Petrel
Podiceps sp.
Common/Short-billed Gull
frigatebird sp.
pheasant sp.
Boreal/Northern Saw-whet Owl
Arctic/Pacific Loon
Yellow-footed/Western Gull
Common/Ruddy Ground Dove
Herring/Lesser Black-backed Gull
oystercatcher sp.
Eurasian/American Goshawk
Masked/Ruddy Duck
Cassin's/Blue-headed Vireo
Bridled/Juniper Titmouse
Gray-tailed/Wandering Tattler
King/Common Eider
Domestic lovebird sp. (Domestic type)
black-and-white shearwater sp.
Eurasian Moorhen/Common Gallinule
Common/Yellow-billed Loon
Ammospiza sp.
American/Black Oystercatcher
Western/Eastern Wood-Pewee
Grasshopper/Baird's Sparrow
new world quail sp.
American Black/Mottled Duck
golden-plover sp.
Lonchura sp.
large parakeet sp. (former Aratinga sp.)
Tyrannus sp.
Pacific/Winter Wren
California/Woodhouse's Scrub-Jay
Rock/Band-tailed Pigeon
Scripps's/Guadalupe Murrelet (Xantus's Murrelet)
Common Ringed/Semipalmated Plover
Brown/Black Noddy
Chimney/Vaux's Swift
corella/white cockatoo sp.
White-winged/Yellow-chevroned Parakeet
Long-eared/Short-eared Owl
Streptopelia sp.
Sagebrush/Bell's Sparrow (Sage Sparrow)
Cooper's Hawk/American Goshawk
ptarmigan sp.
Philadelphia/Warbling Vireo
American/Pacific Golden-Plover (Lesser Golden-Plover)
Red-crowned/Lilac-crowned Parrot
Oak/Juniper Titmouse (Plain Titmouse)
estrildid finch sp.
Chaetura sp.
Antrostomus sp.
Parasitic/Pomarine Jaeger
Ring-necked/Green Pheasant
Dryobates sp.
storm-petrel sp. (white-rumped)
Yellow-billed/Black-billed Cuckoo
Golden-winged/Blue-winged Warbler
Red-whiskered/Red-vented Bulbul
Lazuli/Indigo Bunting
American Three-toed/Black-backed Woodpecker
Yellow-bellied/Red-naped Sapsucker
storm-petrel sp. (dark-rumped)
Bay-breasted/Blackpoll Warbler
Eurasian/African Collared-Dove
hawaiian honeycreeper sp.
Townsend's/Hermit Warbler
Bullock's/Baltimore Oriole
Curve-billed/Bendire's Thrasher
moorhen/coot/gallinule sp.
sparrow/warbler sp. (trilling song)
Thick-billed/Common Murre
Buteo/eagle sp.
White-crowned/White-throated Sparrow
Eastern/Mexican Whip-poor-will
Red-naped/Red-breasted Sapsucker
parrot sp.
merganser sp.
Pterodroma sp.
Sooty/Short-tailed Shearwater
Lincoln's/Swamp Sparrow
Greater/Lesser Prairie-Chicken
Bronzed/Brown-headed Cowbird
Rose-breasted/Black-headed Grosbeak
Mitred/Red-masked Parakeet
Hammond's/Dusky Flycatcher
Laughing/Franklin's Gull
Red/Red-necked Phalarope
Brown/Long-billed Thrasher
Red-winged/Tricolored Blackbird
California/Gambel's Quail
Western/Eastern Cattle Egret
Cathartes sp.
Golden-fronted/Red-bellied Woodpecker
Black-throated Gray/Hermit Warbler
parakeet sp.
Botteri's/Cassin's Sparrow
Loggerhead/Northern Shrike
Downy/Ladder-backed Woodpecker
Golden/Bald Eagle
Varied Thrush/American Robin
Nuttall's/Ladder-backed Woodpecker
Acanthis/Spinus sp.
Black-capped/Mountain Chickadee
Spotted/Eastern Towhee (Rufous-sided Towhee)
Anna's/Costa's Hummingbird
Northern/Gilded Flicker
Blue-winged/Cinnamon Teal
Black-bellied Plover/golden-plover sp.
Western/Semipalmated Sandpiper
small falcon sp.
gnatcatcher sp.
House/Eurasian Tree Sparrow
tanager sp. (Piranga sp.)
Common/Hoary Redpoll
Tropical/Couch's Kingbird
Catharus sp.
Western/Chihuahuan Meadowlark
Tufted/Black-crested Titmouse
Herring/Glaucous-winged Gull
Bohemian/Cedar Waxwing
Boat-tailed/Great-tailed Grackle
large shorebird sp.
Dark-eyed/Yellow-eyed Junco
Northern Cardinal/Pyrrhuloxia
Great/Double-crested Cormorant
Ruby-crowned/Golden-crowned Kinglet
Yellow-crowned/Black-crowned Night Heron
Nelson's/Saltmarsh Sparrow (Sharp-tailed Sparrow)
white egret sp.
Red-shouldered/Broad-winged Hawk
Western/Glaucous-winged Gull
yellow-bellied kingbird sp.
Psittacara sp.
Western/Eastern Meadowlark
new world vulture sp.
Domestic goose sp. (Domestic type)
Spizella sp./American Tree Sparrow
Louisiana/Northern Waterthrush
Tree/Violet-green Swallow
Short-billed/Long-billed Dowitcher
Amazona sp.
Cassin's/Western Kingbird
Common/Red-breasted Merganser
Double-crested/Neotropic Cormorant
Sharp-shinned/Cooper's Hawk
new world warbler sp.
Rufous/Allen's Hummingbird
Lesser/Greater Yellowlegs
Common/Barrow's Goldeneye
Downy/Hairy Woodpecker
Mallard/American Black Duck
Carolina/Black-capped Chickadee
Ruby-throated/Black-chinned Hummingbird