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621.
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629.
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664.
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715.
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716.
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719.
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721.
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722.
species
723.
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724.
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725.
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726.
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727.
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728.
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729.
species
730.
species
731.
species
732.
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733.
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734.
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735.
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736.
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737.
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738.
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739.
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749.
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763.
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764.
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766.
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767.
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768.
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769.
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770.
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771.
species
772.
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773.
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776.
species
777.
species
778.
species
779.
species
780.
species
781.
species
782.
species
783.
species
784.
species
785.
species
786.
species
787.
species
788.
species
789.
species
790.
species
791.
species
794.
species
795.
species
796.
species
797.
species
798.
species
799.
species
800.
species
801.
species
802.
species
806.
species
807.
species
808.
species
809.
species
810.
species
811.
species
812.
species
813.
species
814.
species
815.
species
816.
species
817.
species
818.
species
819.
species
820.
species
821.
species
822.
species
823.
species
824.
species
825.
species
826.
species
827.
species
828.
species
829.
species
830.
species
831.
species
832.
species
833.
species
834.
species
835.
species
836.
species
837.
species
838.
species
839.
species
840.
species
841.
species
842.
species
843.
species
844.
species
845.
species
846.
species
847.
species
848.
species
849.
species
850.
species
851.
species
852.
species
853.
species
854.
species
855.
species
856.
species
857.
species
858.
species
859.
species
860.
species
861.
species
862.
species
863.
species
864.
species
865.
species
866.
species
867.
species
868.
species
869.
species
870.
species
871.
species
872.
species
873.
species
875.
species
876.
species
878.
species
879.
species
880.
species
881.
species
882.
species
883.
species
884.
species
885.
species
886.
species
887.
species
888.
species
891.
species
892.
species
893.
species
894.
species
895.
species
896.
species
897.
species
899.
species
900.
species
901.
species
902.
species
903.
species
904.
species
905.
species
906.
species
907.
species
908.
species
909.
species
910.
species
911.
species
913.
species
914.
species
915.
species
917.
species
918.
species
920.
species
921.
species
922.
species
924.
species
925.
species
926.
species
927.
species
928.
species
929.
species
930.
species
931.
species
932.
species
933.
species
934.
species
935.
species
936.
species
937.
species
938.
species
939.
species
940.
species
941.
species
942.
species
943.
species
944.
species
945.
species
946.
species
947.
species
957.
species
958.
species
959.
species
960.
species
961.
species
962.
species
963.
species
964.
species
965.
species
966.
species
967.
species
968.
species
970.
species
971.
species
972.
species
973.
species
974.
species
975.
species
976.
species
977.
species
978.
species
979.
species
980.
species
981.
species
982.
species
983.
species
984.
species
985.
species
986.
species
987.
species
988.
species
989.
species
990.
species
991.
species
992.
species
993.
species
994.
species
995.
species
996.
species
997.
species
998.
species
999.
species
1000.
species
1001.
species
1002.
species
1003.
species
1004.
species
1005.
species
1006.
species
1007.
species
1008.
species
1009.
species
1010.
species
1012.
species
1013.
species
1014.
species
1015.
species
1016.
species
1017.
species
1018.
species
1019.
species
1020.
species
1021.
species
1022.
species
1023.
species
1024.
species
1025.
species
1026.
species
1027.
species
1028.
species
1029.
species
1030.
species
1031.
species
1032.
species
1033.
species
1034.
species
1035.
species
1036.
species
1037.
species
1038.
species
1039.
species
1040.
species
1041.
species
1042.
species
1043.
species
1044.
species
1045.
species
1046.
species
1047.
species
1048.
species
1049.
species
1050.
species
1051.
species
1052.
species
1053.
species
1054.
species
1055.
species
1056.
species
1057.
species
1058.
species
1059.
species
1122.
species
1123.
species
1124.
species
1125.
species
1127.
species
1128.
species
1129.
species
1130.
species
1131.
species
1132.
species
1133.
species
1134.
species
1135.
species
1137.
species
1139.
species
1140.
species
1141.
species
1142.
species
1143.
species
1148.
species
1150.
species
1151.
species
1152.
Fischer's x Yellow-collared Lovebird (hybrid)
Greater White-fronted x Cackling/Canada Goose (hybrid)
Mallard x Pacific Black Duck (hybrid)
Herring x Slaty-backed Gull (hybrid)
Black-chinned x Broad-tailed Hummingbird (hybrid)
Northern Parula x Black-throated Gray Warbler (hybrid)
Western x Chihuahuan Meadowlark (hybrid)
Black-capped x White-eyed Vireo (hybrid)
Cape May x Magnolia Warbler (hybrid)
Ladder-backed x Hairy Woodpecker (hybrid)
Mute x Whooper Swan (hybrid)
Gray-crowned x Black Rosy-Finch (hybrid)
Mallard x Ring-necked Duck (hybrid)
Yellow-bellied/Red-naped x Red-breasted Sapsucker (hybrid)
Golden x Lady Amherst's Pheasant (hybrid)
Graylag x Swan Goose (hybrid)
Hairy x White-headed Woodpecker (hybrid)
Buff-breasted x White-rumped Sandpiper (hybrid)
Mute x Trumpeter Swan (hybrid)
Blue-winged Teal x American Wigeon (hybrid)
Barn x Cave Swallow (hybrid)
House x Purple Finch (hybrid)
Dark-eyed Junco x White-crowned Sparrow (hybrid)
Mountain x Chestnut-backed Chickadee (hybrid)
Grasshopper x Savannah Sparrow (hybrid)
Ruddy x Common Shelduck (hybrid)
Kentucky Warbler x Common Yellowthroat (hybrid)
Northern Bobwhite x California Quail (hybrid)
Red-whiskered x Red-vented Bulbul (hybrid)
Yellow-throated x Blue-headed Vireo (hybrid)
Bahama x Northern Mockingbird (hybrid)
Greater Sage-Grouse x Sharp-tailed Grouse (hybrid)
California x Crissal Thrasher (hybrid)
Canvasback x scaup sp. (hybrid)
Mallard x Eastern Spot-billed Duck (hybrid)
Yellow-rumped x Hermit Warbler (hybrid)
Eurasian Wigeon x Northern Pintail (hybrid)
Red-shouldered x Broad-winged Hawk (hybrid)
Yellow x Black-throated Blue Warbler (hybrid)
Brown x Blue-footed Booby (hybrid)
Black-throated Gray x Hermit Warbler (hybrid)
American Redstart x Yellow Warbler (hybrid)
Crimson x Eastern Rosella (hybrid)
Black-throated Gray x Townsend's Warbler (hybrid)
Scarlet Tanager x Rose-breasted Grosbeak (hybrid)
Common x Arctic Tern (hybrid)
MacGillivray's x Mourning Warbler (hybrid)
Summer x Scarlet Tanager (hybrid)
Yellow-rumped x Grace's Warbler (hybrid)
Emperor x Cackling Goose (hybrid)
King x Common Eider (hybrid)
Chipping x Field Sparrow (hybrid)
Curve-billed x Long-billed Thrasher (hybrid)
Lesser x American Goldfinch (hybrid)
Yellow-breasted Chat x new world oriole sp. (hybrid)
Costa's x Broad-billed Hummingbird (hybrid)
Chestnut-sided x Black-throated Blue Warbler (hybrid)
Greater x Lesser Prairie-Chicken (hybrid)
Mallard x Mexican/Mottled Duck (hybrid)
American Wigeon x American Black Duck (hybrid)
Canyon x Spotted Towhee (hybrid)
Bufflehead x goldeneye sp. (hybrid)
Red-crowned x Lilac-crowned Parrot (hybrid)
Pine Siskin x American Goldfinch (hybrid)
Spectacled x King Eider (hybrid)
House x Fish Crow (hybrid)
Cape May x Yellow-rumped Warbler (hybrid)
Yellow-rumped x Yellow-throated Warbler (hybrid)
Mountain x Mexican Chickadee (hybrid)
Ross's x Greater White-fronted Goose (hybrid)
House x Eurasian Tree Sparrow (hybrid)
Western x Eastern Screech-Owl (hybrid)
Boat-tailed x Great-tailed Grackle (hybrid)
Steller's x Blue Jay (hybrid)
Common x Hoary Redpoll (hybrid)
Rufous x Broad-tailed Hummingbird (hybrid)
White x Salmon-crested Cockatoo (hybrid)
Western x Eastern Wood-Pewee (hybrid)
Bay-breasted x Blackpoll Warbler (hybrid)
Varied x Painted Bunting (hybrid)
Cliff x Cave Swallow (hybrid)
Snowy x Little Egret (hybrid)
Peregrine x Prairie Falcon (hybrid)
Anna's x Broad-billed Hummingbird (hybrid)
Canvasback x Ring-necked Duck (hybrid)
Steller's Jay x Woodhouse's Scrub-Jay (hybrid)
Red-crowned x Red-lored Parrot (hybrid)
Emperor x Greater White-fronted Goose (hybrid)
Black-bellied x Fulvous Whistling-Duck (hybrid)
Surf x White-winged Scoter (hybrid)
White-crowned x Harris's Sparrow (hybrid)
Northern Bobwhite x Scaled Quail (hybrid)
Painted x Slate-throated Redstart (hybrid)
Calliope x Broad-tailed Hummingbird (hybrid)
Warbling x Red-eyed Vireo (hybrid)
Canyon x Abert's Towhee (hybrid)
Mexican x Mottled Duck (hybrid)
Yellow-bellied x Red-breasted Sapsucker (hybrid)
Couch's x Western Kingbird (hybrid)
Red-tailed x Ferruginous Hawk (hybrid)
Hooded x Common Merganser (hybrid)
Common x Great-tailed Grackle (hybrid)
Western x Mountain Bluebird (hybrid)
Northern Shoveler x American Wigeon (hybrid)
Clay-colored x Brewer's Sparrow (hybrid)
Double-crested x Neotropic Cormorant (hybrid)
Mallard x Redhead (hybrid)
White-crowned x White-throated Sparrow (hybrid)
Common Black x Red-shouldered Hawk (hybrid)
Yellow x Prairie Warbler (hybrid)
Hooded x Yellow Warbler (hybrid)
Downy x Hairy Woodpecker (hybrid)
Magnolia x Palm Warbler (hybrid)
Ruby-throated x Broad-tailed Hummingbird (hybrid)
Indigo x Painted Bunting (hybrid)
Redhead x Greater Scaup (hybrid)
Brant x Cackling Goose (hybrid)
Gadwall x Green-winged Teal (hybrid)
Tropical x Gray Kingbird (hybrid)
Common Yellowthroat x Rufous-capped Warbler (hybrid)
Dusky x Sharp-tailed Grouse (hybrid)
Redhead x scaup sp. (hybrid)
Ross's x Canada Goose (hybrid)
Redhead x Lesser Scaup (hybrid)
Red Crossbill x Pine Siskin (hybrid)
Tricolored Heron x Snowy Egret (hybrid)
Calliope x Rufous Hummingbird (hybrid)
Violet-green x Northern Rough-winged Swallow (hybrid)
Tropical x Northern Mockingbird (hybrid)
Magnolia x Yellow-rumped Warbler (hybrid)
Thick-billed x Common Murre (hybrid)
Mallard x Green-winged Teal (hybrid)
Northern x Gilded Flicker (hybrid)
Northern Cardinal x Pyrrhuloxia (hybrid)
Anna's x Allen's Hummingbird (hybrid)
Black-chinned x Rufous Hummingbird (hybrid)
Redhead x Ring-necked Duck (hybrid)
Anna's x Calliope Hummingbird (hybrid)
Anna's Hummingbird x Selasphorus sp. (hybrid)
Red-tailed x Rough-legged Hawk (hybrid)
Little Blue x Tricolored Heron (hybrid)
Nelson's x Saltmarsh Sparrow (hybrid)
Ruby-throated x Black-chinned Hummingbird (hybrid)
Black-chinned x Broad-billed Hummingbird (hybrid)
Blue-winged x Prairie Warbler (hybrid)
Townsend's x Black-throated Green Warbler (hybrid)
American Wigeon x Green-winged Teal (hybrid)
Ross's x Cackling Goose (hybrid)
Herring x California Gull (hybrid)
Downy x Ladder-backed Woodpecker (hybrid)
Red-shouldered x Red-tailed Hawk (hybrid)
Trumpeter x Tundra Swan (hybrid)
Yellow-crowned x Black-crowned Night Heron (hybrid)
Lucifer x Anna's Hummingbird (hybrid)
Tree x Violet-green Swallow (hybrid)
Violet-green x Cliff Swallow (hybrid)
MacGillivray's Warbler x Common Yellowthroat (hybrid)
Black-chinned x Anna's Hummingbird (hybrid)
Yellow-rumped x Black-throated Gray Warbler (hybrid)
Eurasian x African Collared-Dove (hybrid)
Black-chinned x Costa's Hummingbird (hybrid)
goldeneye sp. x Hooded Merganser (hybrid)
Great Knot x Surfbird (hybrid)
Lucifer x Costa's Hummingbird (hybrid)
Black-chinned x Calliope Hummingbird (hybrid)
Dark-eyed x Yellow-eyed Junco (hybrid)
Summer x Western Tanager (hybrid)
Blue-and-yellow x Scarlet Macaw (hybrid)
Great Black-backed x Glaucous Gull (hybrid)
Black x Say's Phoebe (hybrid)
Philadelphia x Red-eyed Vireo (hybrid)
Veery x Bicknell's Thrush (hybrid)
Common x Roseate Tern (hybrid)
Wood Duck x Hooded Merganser (hybrid)
Snow Goose x Brant (hybrid)
Barrow's Goldeneye x Hooded Merganser (hybrid)
Song x Swamp Sparrow (hybrid)
American Redstart x Northern Parula (hybrid)
Grace's x Black-throated Gray Warbler (hybrid)
Black x Eastern Phoebe (hybrid)
Palm x Yellow-rumped Warbler (hybrid)
Common Yellowthroat x Yellow Warbler (hybrid)
Broad-billed x Violet-crowned Hummingbird (hybrid)
King x Clapper Rail (hybrid)
White-winged x Yellow-chevroned Parakeet (hybrid)
Blue-winged x Green-winged Teal (hybrid)
Greater White-fronted x Cackling Goose (hybrid)
Snow/Ross's x Cackling/Canada Goose (hybrid)
Mourning Warbler x Common Yellowthroat (hybrid)
Western Kingbird x Scissor-tailed Flycatcher (hybrid)
Trumpeter x Whooper Swan (hybrid)
Snow x Greater White-fronted Goose (hybrid)
Snow x Cackling Goose (hybrid)
Great Egret x Great Blue Heron (hybrid)
Cerulean Warbler x Northern Parula (hybrid)
Northern x Tropical Parula (hybrid)
Hepatic x Flame-colored Tanager (hybrid)
Eurasian Collared-Dove x Mourning Dove (hybrid)
Couch's Kingbird x Scissor-tailed Flycatcher (hybrid)
Sandhill x Whooping Crane (hybrid)
Swainson's x Rough-legged Hawk (hybrid)
Ring-necked Duck x Lesser Scaup (hybrid)
Barnacle x Canada Goose (hybrid)
Scaled x Gambel's Quail (hybrid)
Glaucous x Slaty-backed Gull (hybrid)
Glossy x White-faced Ibis (hybrid)
Herring x Iceland Gull (hybrid)
Colima x Virginia's Warbler (hybrid)
Sandhill x Common Crane (hybrid)
Western x Eastern Kingbird (hybrid)
Dunlin x White-rumped Sandpiper (hybrid)
Brewer's Blackbird x Great-tailed Grackle (hybrid)
Rivoli's x Berylline Hummingbird (hybrid)
Herring x Lesser Black-backed Gull (hybrid)
Rufous x Allen's Hummingbird (hybrid)
Mountain x Boreal Chickadee (hybrid)
Clay-colored x Field Sparrow (hybrid)
Tree x Barn Swallow (hybrid)
Lucifer x Black-chinned Hummingbird (hybrid)
Glaucous-winged x Slaty-backed Gull (hybrid)
Spotted x Eastern Towhee (hybrid)
Black-tailed x Black-capped Gnatcatcher (hybrid)
Gray-crowned x Common Yellowthroat (hybrid)
Bufflehead x Common Goldeneye (hybrid)
Common Gallinule x American Coot (hybrid)
Sandwich x Elegant Tern (hybrid)
Graylag x Canada Goose (hybrid)
Wood Duck x Mallard (hybrid)
Kelp x Herring Gull (hybrid)
Snow x McKay's Bunting (hybrid)
Altamira x Audubon's Oriole (hybrid)
Nuttall's x Hairy Woodpecker (hybrid)
Sharp-tailed Grouse x Greater Prairie-Chicken (hybrid)
Yellow-bellied x Red-naped Sapsucker (hybrid)
Laysan x Black-footed Albatross (hybrid)
Western x Flame-colored Tanager (hybrid)
Green-tailed x Spotted Towhee (hybrid)
Bufflehead x Hooded Merganser (hybrid)
Gadwall x Northern Pintail (hybrid)
Western x Clark's Grebe (hybrid)
Barn x Cliff Swallow (hybrid)
Black-headed x Ring-billed Gull (hybrid)
American Wigeon x Mallard (hybrid)
Gadwall x American Wigeon (hybrid)
Tufted Duck x Greater Scaup (hybrid)
Laughing x Ring-billed Gull (hybrid)
Little Blue Heron x Snowy Egret (hybrid)
Carolina x Black-capped Chickadee (hybrid)
Black-capped x Mountain Chickadee (hybrid)
Common Goldeneye x Hooded Merganser (hybrid)
Tufted Duck x Lesser Scaup (hybrid)
Snow x Canada Goose (hybrid)
Canvasback x Redhead (hybrid)
Curlew x Pectoral Sandpiper (hybrid)
Yellow-rumped x Townsend's Warbler (hybrid)
Muscovy Duck x Mallard (hybrid)
Eastern x Mountain Bluebird (hybrid)
Cinnamon x Green-winged Teal (hybrid)
Glaucous x Glaucous-winged Gull (hybrid)
Northern Shoveler x Mallard (hybrid)
Western x Eastern Meadowlark (hybrid)
American Wigeon x Northern Pintail (hybrid)
Ring-necked Duck x Greater Scaup (hybrid)
Herring x Great Black-backed Gull (hybrid)
Anna's x Rufous Hummingbird (hybrid)
White-crowned x Golden-crowned Sparrow (hybrid)
Common x Barrow's Goldeneye (hybrid)
Tufted Duck x scaup sp. (hybrid)
Northern Pintail x Green-winged Teal (hybrid)
Golden-crowned x White-throated Sparrow (hybrid)
White x Scarlet Ibis (hybrid)
Chipping x Clay-colored Sparrow (hybrid)
Golden-fronted x Red-bellied Woodpecker (hybrid)
Swan Goose x Canada Goose (hybrid)
Herring x Glaucous-winged Gull (hybrid)
Nuttall's x Ladder-backed Woodpecker (hybrid)
Cinnamon Teal x Northern Shoveler (hybrid)
Ring-necked Duck x scaup sp. (hybrid)
Herring x Glaucous Gull (hybrid)
Ring-necked x Tufted Duck (hybrid)
Anna's x Costa's Hummingbird (hybrid)
American x Black Oystercatcher (hybrid)
Downy x Nuttall's Woodpecker (hybrid)
Red-naped x Red-breasted Sapsucker (hybrid)
Snow x Ross's Goose (hybrid)
Mallard x Hawaiian Duck (hybrid)
Northern Shoveler x Gadwall (hybrid)
Gadwall x Mallard (hybrid)
Dark-eyed Junco x White-throated Sparrow (hybrid)
Greater White-fronted x Canada Goose (hybrid)
California x Gambel's Quail (hybrid)
Domestic goose sp. x Canada Goose (hybrid)
Eurasian x American Wigeon (hybrid)
Mallard x Mexican Duck (hybrid)
Townsend's x Hermit Warbler (hybrid)
Blue-winged x Cinnamon Teal (hybrid)
Barnacle x Cackling Goose (hybrid)
Rose-breasted x Black-headed Grosbeak (hybrid)
Western x Glaucous-winged Gull (hybrid)
Bullock's x Baltimore Oriole (hybrid)
Lazuli x Indigo Bunting (hybrid)
Blue-winged Teal x Northern Shoveler (hybrid)
Tufted x Black-crested Titmouse (hybrid)
Mallard x Mottled Duck (hybrid)
Mallard x Northern Pintail (hybrid)
Lawrence's Warbler (hybrid)
Northern Parula x Yellow-throated Warbler (hybrid)
Mallard x American Black Duck (hybrid)
Spotted x Barred Owl (hybrid)
Brewster's Warbler (hybrid)
Golden-winged x Blue-winged Warbler (hybrid)
Masked/Ruddy Duck
Domestic lovebird sp. (Domestic type)
Eurasian Moorhen/Common Gallinule
Thraupidae sp.
Western Cattle/Yellow-billed Egret
Purple/Rock Sandpiper
Clay-colored/Brewer's Sparrow
Common/Antillean Nighthawk
quail-dove sp.
tanager sp. (Thraupidae sp.)
whydah sp.
Oriental/Eurasian Magpie
Dark-eyed Junco/Pine Warbler
lapwing sp.
Bullock's/Black-backed Oriole
Red-crowned/Lilac-crowned Parrot
old world warbler sp.
Tundra/Whooper Swan
pygmy-owl/saw-whet owl sp.
Red-legged/Rock Partridge
Black-throated Gray/Townsend's/Hermit Warbler
Hudsonian/Marbled Godwit
Red-billed/Red-tailed Tropicbird
Boreal/Northern Saw-whet Owl
Chipping Sparrow/Worm-eating Warbler
lovebird sp.
Bank Swallow/Pale Martin
Gray-streaked/Dark-sided Flycatcher
Red-eyed/Black-whiskered Vireo
Black-throated/White-throated Magpie-Jay
Ash-throated/Nutting's Flycatcher
Emberiza sp.
Ridgway's/Mangrove/Clapper Rail
Tropical/Northern Mockingbird
Parus sp.
Great/Medium Egret
Procellaria sp.
Patagioenas sp.
Japanese Leaf/Arctic/Kamchatka Leaf Warbler
Yellow-legged/Lesser Black-backed Gull
corella/white cockatoo sp.
Forpus sp.
Glaucidium sp.
Vidua sp.
Common/Black Scoter
sparrow/warbler sp. (trilling song)
Greater/Lesser White-fronted Goose
Velvet/White-winged/Stejneger's Scoter
Myioborus sp.
pheasant sp.
Common Ringed/Semipalmated Plover
Long-tailed/Pomarine Jaeger
small bittern sp.
oystercatcher sp.
Hepatic/Summer Tanager
Lesser/Greater Roadrunner
Downy/Ladder-backed Woodpecker
Mississippi/Plumbeous Kite
Psittacula sp.
Zosterops sp.
cordonbleu sp.
Brotogeris sp.
Cory's/Cape Verde Shearwater
large albatross sp.
Chlidonias sp.
large macaw sp.
Zino's/Fea's Petrel
Passer sp.
Northern/Great Gray Shrike
Phylloscopus sp.
Geranoaetus/Buteo sp.
estrildid finch sp.
Leach's/Townsend's/Ainley's Storm-Petrel
American/Black Oystercatcher
sand-plover sp.
Pycnonotus sp.
Shiny/Bronzed Cowbird
Leach's/Townsend's Storm-Petrel
Greater/Gunnison Sage-Grouse
Ploceus sp.
Sporophila sp.
Leach's/Townsend's Storm-Petrel (white-rumped)
Thalasseus sp.
small swift sp.
Scarlet-fronted/Cordilleran Parakeet
flamingo sp.
old world quail sp.
Western/Eastern Yellow Wagtail
Trindade/Herald Petrel
Herring/Lesser Black-backed Gull
myna/starling sp.
Grasshopper/Henslow's Sparrow
Ring-necked/Green Pheasant
hawaiian honeycreeper sp.
Herring/Glaucous-winged Gull
Garganey/Green-winged Teal
Cathartes sp.
White-capped/Salvin's/Chatham Albatross
waxbill sp.
House/Eurasian Tree Sparrow
Eurasian/African Collared-Dove
Spotted/Barred Owl
Euplectes sp.
Little/Least Tern
new world martin sp. (Progne sp.)
Yellow-footed/Western Gull
Morelet's/Cinnamon-rumped Seedeater
Petrochelidon sp.
LeConte's/Nelson's Sparrow
Cookilaria petrel sp.
Siberian/Amur Stonechat
Common/Ruddy Ground Dove
Podiceps sp.
Galapagos/Hawaiian Petrel (Dark-rumped Petrel)
eclectus sp.
Dusky/Naumann's Thrush
Gray-tailed/Wandering Tattler
yellowthroat sp.
Black-throated Gray/Hermit Warbler
Masked/Nazca Booby
Common/Spotted Sandpiper
Snowy/Kentish Plover
Red-whiskered/Red-vented Bulbul
vireo sp. (Red-eyed Vireo complex)
Tree/Olive-backed Pipit
Shiny/Brown-headed Cowbird
Hydrobates sp. (Band-rumped complex)
Red/Cassia Crossbill
Western/Eastern Cattle Egret
rainbow lorikeet sp.
Grasshopper/Baird's Sparrow
Tachycineta sp.
paradise-whydah sp.
Varied Thrush/American Robin
Lonchura sp.
Pterodroma sp.
large toucan sp.
Dusky/Sooty Grouse
King/Common Eider
Red-eyed/Yellow-green Vireo
elaenia sp. (genus Elaenia)
Caprimulgus sp.
Psittacara sp.
Common/Yellow-billed Loon
Streaked/Sulphur-bellied Flycatcher
Timaliidae sp.
Scripps's/Craveri's Murrelet
procellariid sp.
Serinus sp.
tropicbird sp.
Tyrannus sp.
Mallard/Hawaiian Duck
Eurasian/Oriental Skylark
Leach's/Townsend's Storm-Petrel (dark-rumped)
Snow/McKay's Bunting
Taiga/Tundra Bean-Goose
American/Greater Flamingo
Buteo/eagle sp.
Black-throated Gray/Townsend's Warbler
Smooth-billed/Groove-billed Ani
Chimney/Vaux's Swift
Mitred/Red-masked Parakeet
large swift sp.
Golden-fronted/Red-bellied Woodpecker
Brown/Long-billed Thrasher
parrot sp.
storm-petrel sp. (dark-rumped)
jaeger/skua sp.
Purple/Cassin's Finch
Cassin's/Blue-headed Vireo
Coccyzus sp.
Black-legged/Red-legged Kittiwake
White-winged/Stejneger's Scoter
American Three-toed/Black-backed Woodpecker
Orchard/Hooded Oriole
large parakeet sp. (former Aratinga sp.)
Nuttall's/Ladder-backed Woodpecker
Arctic/Kamchatka Leaf Warbler
Chaetura sp.
Dryobates sp.
Antrostomus sp.
Amazona sp.
small albatross sp.
Leiothlypis sp.
Haemorhous sp.
Pheucticus sp.
parakeet sp.
yellow-bellied kingbird sp.
Cooper's Hawk/American Goshawk
MacGillivray's/Mourning Warbler
Botteri's/Cassin's Sparrow
Philadelphia/Red-eyed Vireo
Scripps's/Guadalupe/Craveri's Murrelet
Sharp-tailed/Pectoral Sandpiper
white-eye sp.
Anna's/Costa's Hummingbird
California/Gambel's Quail
White-winged/Yellow-chevroned Parakeet
Laughing/Franklin's Gull
Common/Short-billed Gull
Streptopelia sp.
Dark-eyed/Yellow-eyed Junco
Eastern/Chihuahuan Meadowlark
Tree/Violet-green Swallow
Red-winged/Tricolored Blackbird
Long-tailed/Parasitic Jaeger
Selasphorus sp.
black-and-white shearwater sp.
Lazuli/Indigo Bunting
Townsend's/Hermit Warbler
Cassin's/Western Kingbird
Red-naped/Red-breasted Sapsucker
Great/Double-crested Cormorant
Summer/Scarlet Tanager
storm-petrel sp. (white-rumped)
Scripps's/Guadalupe Murrelet (Xantus's Murrelet)
Northern Cardinal/Pyrrhuloxia
albatross sp.
Cliff/Cave Swallow
Golden/Bald Eagle
Ruby-throated/Black-chinned Hummingbird
Snowy/Tristan/Antipodean Albatross
Parasitic/Pomarine Jaeger
Tropical/Couch's Kingbird
Rose-breasted/Black-headed Grosbeak
California/Woodhouse's Scrub-Jay
American Black/Mottled Duck
Western/Chihuahuan Meadowlark
Connecticut/MacGillivray's/Mourning Warbler
Cassin's/Plumbeous Vireo
Thick-billed/Common Murre
Oak/Juniper Titmouse (Plain Titmouse)
Northern/Tropical Parula
Common/Wilson's Snipe
Sagebrush/Bell's Sparrow (Sage Sparrow)
Boat-tailed/Great-tailed Grackle
Eastern/Mexican Whip-poor-will
small falcon sp.
Western/Eastern Wood-Pewee
Rufous/Allen's Hummingbird
Myiarchus sp.
Hammond's/Dusky Flycatcher
Black-capped/Mountain Chickadee
Mallard/Mexican Duck
Yellow-bellied/Red-naped Sapsucker
Tufted/Black-crested Titmouse
Bronzed/Brown-headed Cowbird
Zonotrichia sp.
crow/raven sp.
Philadelphia/Warbling Vireo
Ammospiza sp.
White-crowned/White-throated Sparrow
Red-shouldered/Broad-winged Hawk
nightjar sp.
Rusty/Brewer's Blackbird
Bay-breasted/Blackpoll Warbler
Bullock's/Baltimore Oriole
Long-eared/Short-eared Owl
solitary vireo sp.
large falcon sp.
Surf/Black Scoter
Domestic goose sp. (Domestic type)
Mallard/American Black Duck
cuckoo sp. (Cuculidae sp.)
waterfowl sp.
moorhen/coot/gallinule sp.
large rail sp.
Greater/Lesser Prairie-Chicken
Setophaga sp.
Passerina sp.
Curve-billed/Bendire's Thrasher
frigatebird sp.
Yellow-crowned/Black-crowned Night Heron
Blue-winged/Cinnamon Teal
Double-crested/Neotropic Cormorant
kingfisher sp.
Common/Barrow's Goldeneye
new world oriole sp.
tanager sp. (Piranga sp.)
diurnal raptor sp.
Western/Semipalmated Sandpiper
Calidris sp.
Spizella sp.
nighthawk sp.
Forster's/Common Tern
gull/tern sp.
stilt/avocet sp.
longspur sp.
white egret sp.
hummingbird sp.
Yellow-billed/Black-billed Cuckoo
hornbill sp.
Snow/Ross's Goose
new world quail sp.
Downy/Hairy Woodpecker
Catharus sp.
nuthatch sp.
Black-bellied Plover/golden-plover sp.
storm-petrel sp.
shearwater sp.
American/Pacific Golden-Plover (Lesser Golden-Plover)
Sharp-shinned/Cooper's Hawk
Western/Eastern Meadowlark
Sooty/Short-tailed Shearwater
crossbill sp.
Gray-cheeked/Bicknell's Thrush
Louisiana/Northern Waterthrush
Greater/Lesser Scaup
Red/Red-necked Phalarope
Spizella sp./American Tree Sparrow
Nelson's/Saltmarsh Sparrow (Sharp-tailed Sparrow)
Golden-winged/Blue-winged Warbler
Common/Red-breasted Merganser
Western/Glaucous-winged Gull
Carolina/Black-capped Chickadee
blackbird sp.
Ruby-crowned/Golden-crowned Kinglet
Arctic/Pacific Loon
Loggerhead/Northern Shrike
Trumpeter/Tundra Swan
Lesser/Greater Yellowlegs
Short-billed/Long-billed Dowitcher
phalarope sp.
rail/crake sp.
wren sp.
new world warbler sp.
Glossy/White-faced Ibis
large tern sp.
Spotted/Eastern Towhee (Rufous-sided Towhee)
Alder/Willow Flycatcher (Traill's Flycatcher)
passerine sp.
woodpecker sp.
new world sparrow sp.