species
121.
species
127.
species
151.
species
162.
species
166.
species
173.
species
205.
species
208.
species
211.
species
227.
species
237.
species
262.
species
268.
species
269.
species
276.
species
311.
species
330.
species
340.
species
341.
species
342.
species
344.
species
416.
species
428.
species
440.
species
451.
species
461.
species
469.
species
470.
species
471.
species
477.
species
484.
species
495.
species
499.
species
502.
species
517.
species
522.
species
526.
species
529.
species
537.
species
539.
species
545.
species
551.
species
556.
species
558.
species
562.
species
565.
species
566.
species
568.
species
574.
species
580.
species
592.
species
593.
species
598.
species
599.
species
604.
species
609.
species
613.
species
614.
species
617.
species
621.
species
625.
species
630.
species
633.
species
635.
species
644.
species
645.
species
650.
species
653.
species
654.
species
655.
species
659.
species
665.
species
666.
species
667.
species
668.
species
670.
species
673.
species
675.
species
676.
species
677.
species
678.
species
679.
species
680.
species
682.
species
686.
species
687.
species
688.
species
689.
species
690.
species
691.
species
693.
species
694.
species
696.
species
697.
species
698.
species
699.
species
701.
species
702.
species
704.
species
706.
species
707.
species
709.
species
710.
species
711.
species
712.
species
713.
species
716.
species
717.
species
719.
species
720.
species
722.
species
723.
species
724.
species
725.
species
726.
species
732.
species
734.
species
735.
species
737.
species
740.
species
741.
species
742.
species
743.
species
744.
species
745.
species
746.
species
747.
species
748.
species
749.
species
750.
species
751.
species
752.
species
753.
species
754.
species
755.
species
756.
species
758.
species
759.
species
760.
species
761.
species
762.
species
763.
species
764.
species
765.
species
766.
species
767.
species
768.
species
769.
species
770.
species
771.
species
772.
species
773.
species
774.
species
775.
species
776.
species
777.
species
778.
species
779.
species
780.
species
781.
species
783.
species
785.
species
786.
species
787.
species
788.
species
789.
species
790.
species
791.
species
792.
species
793.
species
794.
species
795.
species
796.
species
797.
species
798.
species
799.
species
800.
species
801.
species
802.
species
803.
species
804.
species
805.
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
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
857.
species
858.
species
859.
species
860.
species
861.
species
862.
species
863.
species
864.
species
865.
species
867.
species
868.
species
869.
species
870.
species
871.
species
872.
species
873.
species
874.
species
875.
species
876.
species
877.
species
878.
species
879.
species
880.
species
881.
species
882.
species
883.
species
884.
species
885.
species
886.
species
887.
species
888.
species
889.
species
890.
species
891.
species
892.
species
893.
species
894.
species
895.
species
896.
species
897.
species
898.
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
912.
species
913.
species
914.
species
915.
species
916.
species
917.
species
918.
species
919.
species
920.
species
921.
species
922.
species
923.
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
948.
species
949.
species
950.
species
951.
species
952.
species
953.
species
954.
species
955.
species
956.
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
969.
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
1011.
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
1033.
species
1034.
species
1035.
species
1036.
species
1037.
species
1038.
species
1039.
species
1040.
species
1042.
species
1043.
species
1045.
species
1047.
species
1048.
species
1049.
species
1051.
species
1052.
species
1053.
species
1054.
species
1055.
species
1056.
species
1057.
species
1058.
species
1059.
species
1060.
species
1061.
species
1062.
species
1063.
species
1064.
species
1065.
species
1066.
species
1067.
species
1068.
species
1069.
species
1070.
species
1072.
species
1073.
species
1074.
species
1075.
species
1076.
species
1077.
species
1078.
species
1079.
species
1080.
species
1081.
species
1083.
species
1085.
species
1086.
species
1087.
species
1089.
species
1090.
species
1091.
species
1092.
species
1093.
species
1094.
species
1096.
species
1097.
species
1098.
species
1099.
species
1100.
species
1101.
species
1102.
species
1103.
species
1104.
species
1105.
species
1106.
species
1107.
species
1108.
species
1121.
species
1125.
species
1126.
species
1129.
species
1133.
species
1134.
species
1135.
species
1137.
species
1138.
species
1139.
species
1140.
species
1141.
species
1142.
species
1143.
species
1144.
species
1145.
species
1147.
species
1148.
species
1149.
species
1150.
species
1151.
species
1152.
Carolina x Black-capped Chickadee (hybrid)
Mallard x Mottled Duck (hybrid)
Tufted x Black-crested Titmouse (hybrid)
Mallard x American Black Duck (hybrid)
Domestic goose sp. x Canada Goose (hybrid)
Western x Glaucous-winged Gull (hybrid)
Herring x Glaucous-winged Gull (hybrid)
Mallard x Mexican Duck (hybrid)
Northern x Tropical Parula (hybrid)
Graylag x Canada Goose (hybrid)
Glossy x White-faced Ibis (hybrid)
Mallard x Hawaiian Duck (hybrid)
Black x Eastern Phoebe (hybrid)
Greater White-fronted x Canada Goose (hybrid)
Spotted x Eastern Towhee (hybrid)
Black-capped x Mountain Chickadee (hybrid)
Rufous x Allen's Hummingbird (hybrid)
Red-naped x Red-breasted Sapsucker (hybrid)
Blue-winged Teal x Northern Shoveler (hybrid)
Golden-fronted x Red-bellied Woodpecker (hybrid)
Wood Duck x Mallard (hybrid)
Eurasian x American Wigeon (hybrid)
Lazuli x Indigo Bunting (hybrid)
Mallard x Northern Pintail (hybrid)
Altamira x Audubon's Oriole (hybrid)
Common Black x Red-shouldered Hawk (hybrid)
Dark-eyed Junco x White-throated Sparrow (hybrid)
Blue-winged x Cinnamon Teal (hybrid)
Northern Shoveler x Gadwall (hybrid)
Ring-necked Duck x scaup sp. (hybrid)
Greater x Lesser Prairie-Chicken (hybrid)
Muscovy Duck x Mallard (hybrid)
White-crowned x Golden-crowned Sparrow (hybrid)
Mute x Trumpeter Swan (hybrid)
Scaled x Gambel's Quail (hybrid)
Downy x Nuttall's Woodpecker (hybrid)
Mexican x Mottled Duck (hybrid)
Snow x Ross's Goose (hybrid)
Bullock's x Baltimore Oriole (hybrid)
Red-crowned x Red-lored Parrot (hybrid)
American x Black Oystercatcher (hybrid)
Lawrence's Warbler (hybrid)
Sharp-tailed Grouse x Greater Prairie-Chicken (hybrid)
Golden-winged x Blue-winged Warbler (hybrid)
Brewster's Warbler (hybrid)
Western Kingbird x Scissor-tailed Flycatcher (hybrid)
Herring x Glaucous Gull (hybrid)
American Wigeon x Mallard (hybrid)
Nuttall's x Ladder-backed Woodpecker (hybrid)
Western x Clark's Grebe (hybrid)
Snow x Canada Goose (hybrid)
Gadwall x Mallard (hybrid)
Red-shouldered x Red-tailed Hawk (hybrid)
Northern Cardinal x Pyrrhuloxia (hybrid)
Mallard x Mexican/Mottled Duck (hybrid)
Swan Goose x Canada Goose (hybrid)
Townsend's x Hermit Warbler (hybrid)
Anna's x Rufous Hummingbird (hybrid)
Cinnamon Teal x Northern Shoveler (hybrid)
Glaucous x Glaucous-winged Gull (hybrid)
Tufted Duck x scaup sp. (hybrid)
Herring x Lesser Black-backed Gull (hybrid)
Snow x Cackling Goose (hybrid)
Bufflehead x Common Goldeneye (hybrid)
Downy x Hairy Woodpecker (hybrid)
Common x Barrow's Goldeneye (hybrid)
Redhead x Ring-necked Duck (hybrid)
Snow Goose x Brant (hybrid)
Canyon x Abert's Towhee (hybrid)
Gadwall x Northern Pintail (hybrid)
Anna's Hummingbird x Selasphorus sp. (hybrid)
Ross's x Cackling Goose (hybrid)
American Wigeon x Northern Pintail (hybrid)
Black-bellied x Fulvous Whistling-Duck (hybrid)
House x Purple Finch (hybrid)
Laughing x Ring-billed Gull (hybrid)
Ring-necked Duck x Lesser Scaup (hybrid)
Yellow-bellied/Red-naped x Red-breasted Sapsucker (hybrid)
Ring-necked Duck x Greater Scaup (hybrid)
Tufted Duck x Greater Scaup (hybrid)
Downy x Ladder-backed Woodpecker (hybrid)
Tufted Duck x Lesser Scaup (hybrid)
Anna's x Broad-billed Hummingbird (hybrid)
Cinnamon x Green-winged Teal (hybrid)
Black-throated Gray x Townsend's Warbler (hybrid)
American Wigeon x Green-winged Teal (hybrid)
Snow x Greater White-fronted Goose (hybrid)
Yellow-bellied x Red-naped Sapsucker (hybrid)
Anna's x Costa's Hummingbird (hybrid)
Snow/Ross's x Cackling/Canada Goose (hybrid)
Northern Shoveler x Mallard (hybrid)
Herring x Great Black-backed Gull (hybrid)
Magnolia x Yellow-rumped Warbler (hybrid)
Laysan x Black-footed Albatross (hybrid)
Canvasback x Redhead (hybrid)
Red-tailed x Ferruginous Hawk (hybrid)
White x Salmon-crested Cockatoo (hybrid)
Red-tailed x Rough-legged Hawk (hybrid)
Greater White-fronted x Cackling Goose (hybrid)
Common Goldeneye x Hooded Merganser (hybrid)
Bufflehead x goldeneye sp. (hybrid)
Ross's x Canada Goose (hybrid)
Red-crowned x Lilac-crowned Parrot (hybrid)
Canvasback x Ring-necked Duck (hybrid)
Redhead x scaup sp. (hybrid)
Blue-winged x Green-winged Teal (hybrid)
Hooded x Common Merganser (hybrid)
House x Eurasian Tree Sparrow (hybrid)
California x Gambel's Quail (hybrid)
Barnacle x Canada Goose (hybrid)
White-crowned x White-throated Sparrow (hybrid)
Barnacle x Cackling Goose (hybrid)
Yellow-rumped x Townsend's Warbler (hybrid)
Greater White-fronted x Cackling/Canada Goose (hybrid)
Mallard x Green-winged Teal (hybrid)
Red-whiskered x Red-vented Bulbul (hybrid)
goldeneye sp. x Hooded Merganser (hybrid)
Black-headed x Ring-billed Gull (hybrid)
Fischer's x Yellow-collared Lovebird (hybrid)
Gray-crowned x Black Rosy-Finch (hybrid)
Gadwall x American Wigeon (hybrid)
Northern Pintail x Green-winged Teal (hybrid)
Canyon x Spotted Towhee (hybrid)
Mountain x Mexican Chickadee (hybrid)
Golden-crowned x White-throated Sparrow (hybrid)
Bufflehead x Hooded Merganser (hybrid)
Steller's x Blue Jay (hybrid)
Northern x Gilded Flicker (hybrid)
Eurasian Collared-Dove x Mourning Dove (hybrid)
Kelp x Herring Gull (hybrid)
Eurasian x African Collared-Dove (hybrid)
Double-crested x Neotropic Cormorant (hybrid)
Anna's x Allen's Hummingbird (hybrid)
Mallard x Pacific Black Duck (hybrid)
Yellow-rumped x Hermit Warbler (hybrid)
Townsend's x Black-throated Green Warbler (hybrid)
Herring x Slaty-backed Gull (hybrid)
Ruby-throated x Black-chinned Hummingbird (hybrid)
Broad-billed x Violet-crowned Hummingbird (hybrid)
Western x Flame-colored Tanager (hybrid)
Glaucous-winged x Slaty-backed Gull (hybrid)
Lucifer x Black-chinned Hummingbird (hybrid)
Black-chinned x Broad-tailed Hummingbird (hybrid)
Black-chinned x Anna's Hummingbird (hybrid)
Rose-breasted x Black-headed Grosbeak (hybrid)
Bahama x Northern Mockingbird (hybrid)
Calliope x Rufous Hummingbird (hybrid)
Sandwich x Elegant Tern (hybrid)
Barn x Cliff Swallow (hybrid)
Black-chinned x Calliope Hummingbird (hybrid)
Little Blue Heron x Snowy Egret (hybrid)
Herring x California Gull (hybrid)
Yellow-bellied x Red-breasted Sapsucker (hybrid)
Barn x Cave Swallow (hybrid)
Black-chinned x Broad-billed Hummingbird (hybrid)
Great Egret x Great Blue Heron (hybrid)
Colima x Virginia's Warbler (hybrid)
Common x Arctic Tern (hybrid)
Northern Parula x Black-throated Gray Warbler (hybrid)
Western x Chihuahuan Meadowlark (hybrid)
Bay-breasted x Blackpoll Warbler (hybrid)
King x Clapper Rail (hybrid)
Nelson's x Saltmarsh Sparrow (hybrid)
Western x Eastern Kingbird (hybrid)
Pine Siskin x American Goldfinch (hybrid)
Spotted x Barred Owl (hybrid)
Snowy x Little Egret (hybrid)
Yellow-rumped x Grace's Warbler (hybrid)
White-crowned x Harris's Sparrow (hybrid)
Black-capped x White-eyed Vireo (hybrid)
Northern Parula x Yellow-throated Warbler (hybrid)
Cape May x Magnolia Warbler (hybrid)
Redhead x Lesser Scaup (hybrid)
Black-throated Gray x Hermit Warbler (hybrid)
Steller's Jay x Woodhouse's Scrub-Jay (hybrid)
MacGillivray's Warbler x Common Yellowthroat (hybrid)
Ladder-backed x Hairy Woodpecker (hybrid)
Barrow's Goldeneye x Hooded Merganser (hybrid)
Trumpeter x Tundra Swan (hybrid)
Common x Great-tailed Grackle (hybrid)
Mute x Whooper Swan (hybrid)
Trumpeter x Whooper Swan (hybrid)
Dark-eyed Junco x White-crowned Sparrow (hybrid)
Western x Mountain Bluebird (hybrid)
Boat-tailed x Great-tailed Grackle (hybrid)
Mallard x Ring-necked Duck (hybrid)
Hairy x White-headed Woodpecker (hybrid)
Black-chinned x Costa's Hummingbird (hybrid)
White x Scarlet Ibis (hybrid)
Couch's Kingbird x Scissor-tailed Flycatcher (hybrid)
Golden x Lady Amherst's Pheasant (hybrid)
Summer x Western Tanager (hybrid)
Yellow-throated x Blue-headed Vireo (hybrid)
Tropical x Gray Kingbird (hybrid)
Graylag x Swan Goose (hybrid)
Tricolored Heron x Snowy Egret (hybrid)
Brown x Blue-footed Booby (hybrid)
Yellow-breasted Chat x new world oriole sp. (hybrid)
Buff-breasted x White-rumped Sandpiper (hybrid)
Dark-eyed x Yellow-eyed Junco (hybrid)
Lucifer x Costa's Hummingbird (hybrid)
Dunlin x White-rumped Sandpiper (hybrid)
Blue-winged Teal x American Wigeon (hybrid)
Cerulean Warbler x Northern Parula (hybrid)
Varied x Painted Bunting (hybrid)
Eastern x Mountain Bluebird (hybrid)
California x Crissal Thrasher (hybrid)
Grasshopper x Savannah Sparrow (hybrid)
Ross's x Greater White-fronted Goose (hybrid)
Little Blue x Tricolored Heron (hybrid)
Curve-billed x Long-billed Thrasher (hybrid)
Gadwall x Green-winged Teal (hybrid)
Indigo x Painted Bunting (hybrid)
Mountain x Chestnut-backed Chickadee (hybrid)
Blue-and-yellow x Scarlet Macaw (hybrid)
Northern Shoveler x American Wigeon (hybrid)
Sandhill x Common Crane (hybrid)
Rivoli's x Berylline Hummingbird (hybrid)
Great Black-backed x Glaucous Gull (hybrid)
Common Gallinule x American Coot (hybrid)
Ruddy x Common Shelduck (hybrid)
Clay-colored x Field Sparrow (hybrid)
Kentucky Warbler x Common Yellowthroat (hybrid)
Green-tailed x Spotted Towhee (hybrid)
Northern Bobwhite x California Quail (hybrid)
Glaucous x Slaty-backed Gull (hybrid)
American Redstart x Northern Parula (hybrid)
Yellow-crowned x Black-crowned Night Heron (hybrid)
MacGillivray's x Mourning Warbler (hybrid)
Mourning Warbler x Common Yellowthroat (hybrid)
Yellow x Prairie Warbler (hybrid)
Black-chinned x Rufous Hummingbird (hybrid)
Western x Eastern Meadowlark (hybrid)
Redhead x Greater Scaup (hybrid)
Greater Sage-Grouse x Sharp-tailed Grouse (hybrid)
Black x Say's Phoebe (hybrid)
Anna's x Calliope Hummingbird (hybrid)
Mallard x Eastern Spot-billed Duck (hybrid)
Canvasback x scaup sp. (hybrid)
Eurasian Wigeon x Northern Pintail (hybrid)
Emperor x Greater White-fronted Goose (hybrid)
Red-shouldered x Broad-winged Hawk (hybrid)
Yellow x Black-throated Blue Warbler (hybrid)
Chipping x Field Sparrow (hybrid)
American Redstart x Yellow Warbler (hybrid)
Palm x Yellow-rumped Warbler (hybrid)
Costa's x Broad-billed Hummingbird (hybrid)
Western x Eastern Wood-Pewee (hybrid)
Crimson x Eastern Rosella (hybrid)
House x Fish Crow (hybrid)
Rufous x Broad-tailed Hummingbird (hybrid)
Scarlet Tanager x Rose-breasted Grosbeak (hybrid)
Summer x Scarlet Tanager (hybrid)
Magnolia x Palm Warbler (hybrid)
Emperor x Cackling Goose (hybrid)
King x Common Eider (hybrid)
Lesser x American Goldfinch (hybrid)
Cape May x Yellow-rumped Warbler (hybrid)
Chipping x Clay-colored Sparrow (hybrid)
Chestnut-sided x Black-throated Blue Warbler (hybrid)
American Wigeon x American Black Duck (hybrid)
Ring-necked x Tufted Duck (hybrid)
Northern Bobwhite x Scaled Quail (hybrid)
Spectacled x King Eider (hybrid)
Snow x McKay's Bunting (hybrid)
Cliff x Cave Swallow (hybrid)
Yellow-rumped x Yellow-throated Warbler (hybrid)
Western x Eastern Screech-Owl (hybrid)
Common x Hoary Redpoll (hybrid)
Hooded x Yellow Warbler (hybrid)
Yellow-rumped x Black-throated Gray Warbler (hybrid)
Peregrine x Prairie Falcon (hybrid)
Mallard x Redhead (hybrid)
Surf x White-winged Scoter (hybrid)
Painted x Slate-throated Redstart (hybrid)
Calliope x Broad-tailed Hummingbird (hybrid)
Warbling x Red-eyed Vireo (hybrid)
White-winged x Yellow-chevroned Parakeet (hybrid)
Couch's x Western Kingbird (hybrid)
Sandhill x Whooping Crane (hybrid)
Clay-colored x Brewer's Sparrow (hybrid)
Tropical x Northern Mockingbird (hybrid)
Ruby-throated x Broad-tailed Hummingbird (hybrid)
Blue-winged x Prairie Warbler (hybrid)
Brant x Cackling Goose (hybrid)
Wood Duck x Hooded Merganser (hybrid)
Common Yellowthroat x Rufous-capped Warbler (hybrid)
Dusky x Sharp-tailed Grouse (hybrid)
Red Crossbill x Pine Siskin (hybrid)
Great Knot x Surfbird (hybrid)
Violet-green x Northern Rough-winged Swallow (hybrid)
Thick-billed x Common Murre (hybrid)
Lucifer x Anna's Hummingbird (hybrid)
Tree x Violet-green Swallow (hybrid)
Violet-green x Cliff Swallow (hybrid)
Philadelphia x Red-eyed Vireo (hybrid)
Veery x Bicknell's Thrush (hybrid)
Common x Roseate Tern (hybrid)
Song x Swamp Sparrow (hybrid)
Grace's x Black-throated Gray Warbler (hybrid)
Common Yellowthroat x Yellow Warbler (hybrid)
Gray-crowned x Common Yellowthroat (hybrid)
Hepatic x Flame-colored Tanager (hybrid)
Swainson's x Rough-legged Hawk (hybrid)
Herring x Iceland Gull (hybrid)
Brewer's Blackbird x Great-tailed Grackle (hybrid)
Black-tailed x Black-capped Gnatcatcher (hybrid)
Mountain x Boreal Chickadee (hybrid)
Tree x Barn Swallow (hybrid)
Nuttall's x Hairy Woodpecker (hybrid)
Curlew x Pectoral Sandpiper (hybrid)
Carolina/Black-capped Chickadee
Lesser/Greater Yellowlegs
Tropical/Couch's Kingbird
passerine sp.
new world warbler sp.
Common/Red-breasted Merganser
shorebird sp.
Sharp-shinned/Cooper's Hawk
Spotted/Eastern Towhee (Rufous-sided Towhee)
Domestic goose sp. (Domestic type)
Amazona sp.
Catharus sp.
blackbird sp.
Psittacara sp.
Short-billed/Long-billed Dowitcher
Philadelphia/Warbling Vireo
Ruby-throated/Black-chinned Hummingbird
Nelson's/Saltmarsh Sparrow (Sharp-tailed Sparrow)
Rufous/Allen's Hummingbird
Loggerhead/Northern Shrike
Western/Glaucous-winged Gull
Northern Cardinal/Pyrrhuloxia
Mallard/American Black Duck
Yellow-crowned/Black-crowned Night Heron
Cackling/Canada Goose
Black-capped/Mountain Chickadee
Herring/Glaucous-winged Gull
Tree/Violet-green Swallow
Western/Eastern Meadowlark
Curve-billed/Bendire's Thrasher
Double-crested/Neotropic Cormorant
large alcid sp.
Passerina sp.
yellow-bellied kingbird sp.
Boat-tailed/Great-tailed Grackle
Ruby-crowned/Golden-crowned Kinglet
Common/Barrow's Goldeneye
Canyon/Abert's Towhee
shearwater sp.
Myiarchus sp.
Tufted/Black-crested Titmouse
Cassin's/Western Kingbird
Western/Semipalmated Sandpiper
Western/Chihuahuan Meadowlark
Brown/Long-billed Thrasher
Louisiana/Northern Waterthrush
tanager sp. (Piranga sp.)
nighthawk sp.
Selasphorus sp.
Yellow-billed/Black-billed Cuckoo
Rose-breasted/Black-headed Grosbeak
Mallard/Hawaiian Duck
Bay-breasted/Blackpoll Warbler
Eurasian/African Collared-Dove
Mitred/Red-masked Parakeet
new world vulture sp.
parakeet sp.
Black-bellied Plover/golden-plover sp.
Horned/Eared Grebe
Hammond's/Dusky Flycatcher
gull/tern sp.
Red-winged/Tricolored Blackbird
Bullock's/Baltimore Oriole
Blue-winged/Cinnamon Teal
Downy/Ladder-backed Woodpecker
parrot sp.
Alder/Willow Flycatcher (Traill's Flycatcher)
moorhen/coot/gallinule sp.
White-crowned/White-throated Sparrow
Sagebrush/Bell's Sparrow (Sage Sparrow)
Bronzed/Brown-headed Cowbird
Spizella sp./American Tree Sparrow
American/Pacific Golden-Plover (Lesser Golden-Plover)
Parasitic/Pomarine Jaeger
House/Eurasian Tree Sparrow
large shorebird sp.
solitary vireo sp.
Anna's/Costa's Hummingbird
Red-shouldered/Broad-winged Hawk
new world goldfinch sp.
Streptopelia sp.
storm-petrel sp. (white-rumped)
longspur sp.
Orchard/Hooded Oriole
tropicbird sp.
MacGillivray's/Mourning Warbler
Black-throated Gray/Townsend's Warbler
waterfowl sp.
Nuttall's/Ladder-backed Woodpecker
white-winged gull sp.
California/Woodhouse's Scrub-Jay
Long-eared/Short-eared Owl
Antrostomus sp.
Sooty/Short-tailed Shearwater
Setophaga sp.
Chimney/Vaux's Swift
Red-naped/Red-breasted Sapsucker
Red-crowned/Lilac-crowned Parrot
Townsend's/Hermit Warbler
cuckoo sp. (Cuculidae sp.)
Golden-fronted/Red-bellied Woodpecker
Yellow-casqued/Black-casqued Hornbill
Great/Double-crested Cormorant
Yellow-bellied/Red-naped Sapsucker
nightjar sp.
Greater/Lesser Prairie-Chicken
Ardea sp.
Lincoln's/Swamp Sparrow
Buteo/eagle sp.
estrildid finch sp.
sparrow/warbler sp. (trilling song)
Western/Eastern Cattle Egret
Black-throated Gray/Hermit Warbler
Botteri's/Cassin's Sparrow
Varied Thrush/American Robin
pewee sp. (Contopus sp.)
Oak/Juniper Titmouse (Plain Titmouse)
jaeger/skua sp.
Hudsonian/Marbled Godwit
Dark-eyed/Yellow-eyed Junco
Cathartes sp.
California/Gambel's Quail
Brown/Black Noddy
Red/Red-necked Phalarope
Laughing/Franklin's Gull
black-and-white shearwater sp.
Pterodroma sp.
Eastern/Mexican Whip-poor-will
hawaiian honeycreeper sp.
storm-petrel sp. (dark-rumped)
American Three-toed/Black-backed Woodpecker
Red-whiskered/Red-vented Bulbul
Golden-winged/Blue-winged Warbler
Ring-necked/Green Pheasant
myna/starling sp.
Scolopacidae sp.
White-winged/Yellow-chevroned Parakeet
corella/white cockatoo sp.
Scripps's/Guadalupe Murrelet (Xantus's Murrelet)
Rock/Band-tailed Pigeon
Pacific/Winter Wren
Tyrannus sp.
large parakeet sp. (former Aratinga sp.)
Lonchura sp.
golden-plover sp.
American Black/Mottled Duck
Thick-billed/Common Murre
Grasshopper/Baird's Sparrow
Western/Eastern Wood-Pewee
Cooper's Hawk/American Goshawk
American/Black Oystercatcher
Common/Yellow-billed Loon
Eurasian Moorhen/Common Gallinule
Domestic lovebird sp. (Domestic type)
King/Common Eider
Bridled/Juniper Titmouse
Gray-tailed/Wandering Tattler
Cassin's/Blue-headed Vireo
Masked/Ruddy Duck
oystercatcher sp.
Herring/Lesser Black-backed Gull
Common/Ruddy Ground Dove
Yellow-footed/Western Gull
Arctic/Pacific Loon
Boreal/Northern Saw-whet Owl
pheasant sp.
frigatebird sp.
Common/Short-billed Gull
Podiceps sp.
Leach's/Townsend's/Ainley's Storm-Petrel
American/Greater Flamingo
Passer sp.
Common/Wilson's Snipe
Scripps's/Craveri's Murrelet
Masked/Nazca Booby
new world martin sp. (Progne sp.)
Red/Cassia Crossbill
Thraupidae sp.
Common/Arctic Tern
Snow/McKay's Bunting
Cory's/Great Shearwater
Cookilaria petrel sp.
Long-tailed/Parasitic Jaeger
Western Cattle/Yellow-billed Egret
Sharp-tailed/Pectoral Sandpiper
Clay-colored/Brewer's Sparrow
Red-eyed/Yellow-green Vireo
LeConte's/Nelson's Sparrow
Common/Spotted Sandpiper
Gray-cheeked/Bicknell's Thrush
Purple/Rock Sandpiper
Eastern/Chihuahuan Meadowlark
Shiny/Brown-headed Cowbird
Hydrobates sp.
Coccyzus sp.
Black-legged/Red-legged Kittiwake
Philadelphia/Red-eyed Vireo
Pheucticus sp.
Scripps's/Guadalupe/Craveri's Murrelet
Leach's/Townsend's Storm-Petrel (white-rumped)
White-winged/Stejneger's Scoter
Hen/Northern Harrier
Common Ringed/Semipalmated Plover
Petrochelidon sp.
Connecticut/MacGillivray's/Mourning Warbler
screech-owl sp.
yellowthroat sp.
Hepatic/Summer Tanager
Phylloscopus sp.
Leach's/Townsend's Storm-Petrel
flamingo sp.
Long-tailed/Pomarine Jaeger
Smooth-billed/Groove-billed Ani
small swift sp.
Red-necked/Little Stint
vireo sp. (Red-eyed Vireo complex)
sand-plover sp.
Leach's/Townsend's Storm-Petrel (dark-rumped)
Psittacula sp.
Spotted/Barred Owl
pygmy-owl/saw-whet owl sp.
Cory's/Cape Verde Shearwater
Chipping Sparrow/Worm-eating Warbler
Common/Antillean Nighthawk
Common/Oriental Cuckoo
Taiga/Tundra Bean-Goose
quail-dove sp.
Emberiza sp.
old world quail sp.
tanager sp. (Thraupidae sp.)
Red-eyed/Black-whiskered Vireo
Dark-eyed Junco/Pine Warbler
Brotogeris sp.
harrier sp.
Common/Black Scoter
Oriental/Eurasian Magpie
eclectus sp.
whydah sp.
Grasshopper/Henslow's Sparrow
Little/Least Tern
lapwing sp.
Scarlet-fronted/Cordilleran Parakeet
Red-eyed/Chivi Vireo
Bullock's/Black-backed Oriole
old world warbler sp.
Tundra/Whooper Swan
Ridgway's/Mangrove/Clapper Rail
stilt/avocet sp.
lovebird sp.
Shiny/Bronzed Cowbird
Red-billed/Red-tailed Tropicbird
Zosterops sp.
large macaw sp.
Greater/Lesser White-fronted Goose
swamphen sp.
Patagioenas sp.
Red-legged/Rock Partridge
Black-throated Gray/Townsend's/Hermit Warbler
Hydrobates sp. (Band-rumped complex)
elaenia sp. (genus Elaenia)
Vidua sp.
Lesser/Greater Roadrunner
Yellow-legged/Lesser Black-backed Gull
Ploceus sp.
coot sp.
Japanese Leaf/Arctic/Kamchatka Leaf Warbler
Bank Swallow/Pale Martin
Arctic/Kamchatka Leaf Warbler
Forpus sp.
Gray-streaked/Dark-sided Flycatcher
small bittern sp.
Black-throated/White-throated Magpie-Jay
Velvet/White-winged/Stejneger's Scoter
Great/Medium Egret
Ash-throated/Nutting's Flycatcher
white-eye sp.
Mississippi/Plumbeous Kite
Tropical/Northern Mockingbird
Garganey/Green-winged Teal
Northern/Great Gray Shrike
Procellaria sp.
paradise-whydah sp.
Galapagos/Hawaiian Petrel (Dark-rumped Petrel)
Glaucidium sp.
Myioborus sp.
waxbill sp.
cordonbleu sp.
large albatross sp.
Chlidonias sp.
Serinus sp.
Geranoaetus/Buteo sp.
Euplectes sp.
Greater/Gunnison Sage-Grouse
small albatross sp.
Sporophila sp.
Western/Eastern Yellow Wagtail
Atlantic/Indian Yellow-nosed Albatross
Trindade/Herald Petrel
White-capped/Salvin's/Chatham Albatross
Eurasian/Oriental Skylark
Morelet's/Cinnamon-rumped Seedeater
Siberian/Amur Stonechat
Dusky/Naumann's Thrush
Streaked/Sulphur-bellied Flycatcher
Snowy/Kentish Plover
rainbow lorikeet sp.
Tree/Olive-backed Pipit
large toucan sp.
Timaliidae sp.
chachalaca sp.
Snowy/Tristan/Antipodean Albatross
hornbill sp.