species
32.
species
33.
species
48.
species
52.
species
53.
species
57.
species
59.
species
105.
species
123.
species
124.
species
128.
species
141.
species
156.
species
161.
species
172.
species
182.
species
184.
species
189.
species
193.
species
199.
species
234.
species
235.
species
245.
species
253.
species
267.
species
279.
species
296.
species
301.
species
306.
species
317.
species
319.
species
345.
species
353.
species
365.
species
369.
species
378.
species
382.
species
384.
species
397.
species
403.
species
407.
species
417.
species
419.
species
422.
species
424.
species
425.
species
428.
species
434.
species
443.
species
451.
species
452.
species
469.
species
475.
species
481.
species
487.
species
498.
species
507.
species
509.
species
512.
species
514.
species
515.
species
522.
species
523.
species
525.
species
527.
species
536.
species
542.
species
552.
species
554.
species
555.
species
556.
species
557.
species
559.
species
565.
species
566.
species
568.
species
569.
species
572.
species
574.
species
575.
species
579.
species
583.
species
584.
species
585.
species
586.
species
587.
species
590.
species
593.
species
595.
species
596.
species
598.
species
599.
species
601.
species
602.
species
604.
species
607.
species
608.
species
610.
species
611.
species
614.
species
615.
species
616.
species
617.
species
618.
species
620.
species
621.
species
622.
species
623.
species
626.
species
628.
species
629.
species
631.
species
633.
species
636.
species
637.
species
638.
species
639.
species
640.
species
642.
species
643.
species
645.
species
648.
species
649.
species
650.
species
651.
species
652.
species
653.
species
654.
species
655.
species
656.
species
658.
species
659.
species
660.
species
661.
species
662.
species
663.
species
664.
species
665.
species
666.
species
667.
species
669.
species
670.
species
672.
species
674.
species
675.
species
676.
species
677.
species
678.
species
679.
species
680.
species
681.
species
682.
species
683.
species
684.
species
685.
species
688.
species
689.
species
690.
species
691.
species
692.
species
693.
species
694.
species
695.
species
696.
species
697.
species
698.
species
699.
species
700.
species
701.
species
702.
species
703.
species
704.
species
706.
species
707.
species
708.
species
709.
species
710.
species
711.
species
712.
species
713.
species
714.
species
715.
species
716.
species
717.
species
718.
species
719.
species
720.
species
721.
species
722.
species
723.
species
724.
species
725.
species
726.
species
729.
species
730.
species
731.
species
733.
species
734.
species
735.
species
736.
species
737.
species
738.
species
739.
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
757.
species
758.
species
759.
species
760.
species
761.
species
762.
species
763.
species
764.
species
765.
species
766.
species
769.
species
770.
species
773.
species
774.
species
775.
species
776.
species
777.
species
779.
species
780.
species
781.
species
782.
species
783.
species
784.
species
785.
species
786.
species
787.
species
789.
species
790.
species
791.
species
792.
species
793.
species
794.
species
795.
species
796.
species
798.
species
799.
species
800.
species
801.
species
802.
species
803.
species
804.
species
805.
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
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
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
851.
species
852.
species
853.
species
854.
species
855.
species
856.
species
857.
species
858.
species
859.
species
861.
species
862.
species
863.
species
864.
species
865.
species
866.
species
867.
species
868.
species
869.
species
870.
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
1032.
species
1033.
species
1035.
species
1037.
species
1038.
species
1039.
species
1040.
species
1041.
species
1042.
species
1043.
species
1045.
species
1046.
species
1049.
species
1050.
species
1051.
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
1071.
species
1072.
species
1073.
species
1075.
species
1076.
species
1077.
species
1078.
species
1079.
species
1080.
species
1081.
species
1082.
species
1083.
species
1084.
species
1086.
species
1088.
species
1089.
species
1090.
species
1092.
species
1093.
species
1094.
species
1095.
species
1096.
species
1097.
species
1099.
species
1100.
species
1101.
species
1102.
species
1103.
species
1104.
species
1105.
species
1106.
species
1107.
species
1108.
species
1109.
species
1110.
species
1111.
species
1125.
species
1127.
species
1128.
species
1129.
species
1130.
species
1134.
species
1136.
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.
Snow x Ross's Goose (hybrid)
Mallard x Mexican Duck (hybrid)
Tufted x Black-crested Titmouse (hybrid)
Mallard x Mottled Duck (hybrid)
Western x Glaucous-winged Gull (hybrid)
Muscovy Duck x Mallard (hybrid)
Mallard x American Black Duck (hybrid)
Mallard x Hawaiian Duck (hybrid)
Carolina x Black-capped Chickadee (hybrid)
Red-naped x Red-breasted Sapsucker (hybrid)
American Wigeon x Green-winged Teal (hybrid)
Yellow-bellied x Red-naped Sapsucker (hybrid)
Domestic goose sp. x Canada Goose (hybrid)
Herring x Glaucous-winged Gull (hybrid)
Mallard x Northern Pintail (hybrid)
Snow Goose x Brant (hybrid)
Northern Shoveler x Mallard (hybrid)
Swan Goose x Canada Goose (hybrid)
Graylag x Canada Goose (hybrid)
Snow x Canada Goose (hybrid)
Cinnamon x Green-winged Teal (hybrid)
Magnolia x Yellow-rumped Warbler (hybrid)
Bufflehead x Common Goldeneye (hybrid)
Mexican x Mottled Duck (hybrid)
Downy x Hairy Woodpecker (hybrid)
Tufted Duck x Greater Scaup (hybrid)
Blue-winged x Cinnamon Teal (hybrid)
Canvasback x Redhead (hybrid)
Common x Barrow's Goldeneye (hybrid)
Gadwall x Mallard (hybrid)
American x Black Oystercatcher (hybrid)
Glaucous x Glaucous-winged Gull (hybrid)
Red-tailed x Ferruginous Hawk (hybrid)
American Wigeon x Mallard (hybrid)
Eurasian x American Wigeon (hybrid)
Glossy x White-faced Ibis (hybrid)
Cinnamon Teal x Northern Shoveler (hybrid)
Greater White-fronted x Canada Goose (hybrid)
Snow x Cackling Goose (hybrid)
Black-capped x Mountain Chickadee (hybrid)
Ring-necked Duck x scaup sp. (hybrid)
Altamira x Audubon's Oriole (hybrid)
Herring x Lesser Black-backed Gull (hybrid)
Anna's x Broad-billed Hummingbird (hybrid)
Blue-winged Teal x Northern Shoveler (hybrid)
Red-tailed x Rough-legged Hawk (hybrid)
Spotted x Eastern Towhee (hybrid)
Snow x Greater White-fronted Goose (hybrid)
Townsend's x Hermit Warbler (hybrid)
Redhead x Ring-necked Duck (hybrid)
White-crowned x Golden-crowned Sparrow (hybrid)
Common Black x Red-shouldered Hawk (hybrid)
Herring x Glaucous Gull (hybrid)
Tufted Duck x scaup sp. (hybrid)
Snow/Ross's x Cackling/Canada Goose (hybrid)
Ross's x Cackling Goose (hybrid)
Greater White-fronted x Cackling Goose (hybrid)
Western x Clark's Grebe (hybrid)
Nuttall's x Ladder-backed Woodpecker (hybrid)
Northern Cardinal x Pyrrhuloxia (hybrid)
Northern Shoveler x Gadwall (hybrid)
Herring x Great Black-backed Gull (hybrid)
Northern x Tropical Parula (hybrid)
Downy x Nuttall's Woodpecker (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)
Scaled x Gambel's Quail (hybrid)
Wood Duck x Mallard (hybrid)
Red-shouldered x Red-tailed Hawk (hybrid)
Canvasback x Ring-necked Duck (hybrid)
Dark-eyed Junco x White-throated Sparrow (hybrid)
Redhead x scaup sp. (hybrid)
Ring-necked Duck x Lesser Scaup (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)
Canyon x Abert's Towhee (hybrid)
Barnacle x Cackling Goose (hybrid)
Golden-fronted x Red-bellied Woodpecker (hybrid)
Yellow-rumped x Townsend's Warbler (hybrid)
Ring-necked Duck x Greater Scaup (hybrid)
Greater White-fronted x Cackling/Canada Goose (hybrid)
Anna's x Costa's Hummingbird (hybrid)
Mallard x Green-winged Teal (hybrid)
White x Salmon-crested Cockatoo (hybrid)
Tufted Duck x Lesser Scaup (hybrid)
Red-whiskered x Red-vented Bulbul (hybrid)
Red-crowned x Red-lored Parrot (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)
Mute x Trumpeter Swan (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)
Laughing x Ring-billed Gull (hybrid)
Eurasian Collared-Dove x Mourning Dove (hybrid)
Kelp x Herring Gull (hybrid)
Eurasian x African Collared-Dove (hybrid)
American Wigeon x Northern Pintail (hybrid)
Double-crested x Neotropic Cormorant (hybrid)
Lazuli x Indigo Bunting (hybrid)
Yellow-bellied/Red-naped x Red-breasted Sapsucker (hybrid)
Bullock's x Baltimore Oriole (hybrid)
Anna's x Allen's Hummingbird (hybrid)
Black-throated Gray x Townsend's Warbler (hybrid)
Mallard x Pacific Black Duck (hybrid)
Yellow-rumped x Hermit Warbler (hybrid)
Gadwall x Northern Pintail (hybrid)
Golden-winged x Blue-winged Warbler (hybrid)
Brewster's Warbler (hybrid)
Townsend's x Black-throated Green Warbler (hybrid)
Herring x Slaty-backed Gull (hybrid)
Lawrence's Warbler (hybrid)
Ruby-throated x Black-chinned Hummingbird (hybrid)
Black x Eastern Phoebe (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)
Rufous x Allen's 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)
Western x Eastern Kingbird (hybrid)
Pine Siskin x American Goldfinch (hybrid)
Spotted x Barred Owl (hybrid)
Western Kingbird x Scissor-tailed Flycatcher (hybrid)
Downy x Ladder-backed Woodpecker (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)
Sharp-tailed Grouse x Greater Prairie-Chicken (hybrid)
Greater x Lesser Prairie-Chicken (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)
Mallard x Mexican/Mottled Duck (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)
Black-bellied x Fulvous Whistling-Duck (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)
Nelson's x Saltmarsh Sparrow (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)
Anna's x Rufous Hummingbird (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)
Anna's Hummingbird x Selasphorus sp. (hybrid)
Grasshopper x Savannah Sparrow (hybrid)
Ross's x Greater White-fronted Goose (hybrid)
House x Purple Finch (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)
Laysan x Black-footed Albatross (hybrid)
Western x Eastern Meadowlark (hybrid)
Redhead x Greater Scaup (hybrid)
Greater Sage-Grouse x Sharp-tailed Grouse (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)
Black x Say's Phoebe (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)
passerine sp.
Domestic goose sp. (Domestic type)
Yellow-crowned/Black-crowned Night Heron
Trumpeter/Tundra Swan
Carolina/Black-capped Chickadee
Tree/Violet-green Swallow
Western/Eastern Meadowlark
Black-capped/Mountain Chickadee
Sharp-shinned/Cooper's Hawk
Cackling/Canada Goose
Double-crested/Neotropic Cormorant
Anna's/Costa's Hummingbird
Common/Red-breasted Merganser
Western/Glaucous-winged Gull
new world warbler sp.
dabbling duck sp.
Louisiana/Northern Waterthrush
Ruby-crowned/Golden-crowned Kinglet
Western/Chihuahuan Meadowlark
Rufous/Allen's Hummingbird
Lesser/Greater Yellowlegs
Tufted/Black-crested Titmouse
rail/crake sp.
crow/raven sp.
diurnal raptor sp.
Short-billed/Long-billed Dowitcher
Red-shouldered/Broad-winged Hawk
Great/Double-crested Cormorant
small falcon sp.
Cliff/Cave Swallow
Mallard/American Black Duck
Cassin's/Western Kingbird
Loggerhead/Northern Shrike
Boat-tailed/Great-tailed Grackle
Tropical/Couch's Kingbird
Ruby-throated/Black-chinned Hummingbird
Blue-winged/Cinnamon Teal
Western/Semipalmated Sandpiper
Common/Barrow's Goldeneye
Brown/Long-billed Thrasher
Setophaga sp.
Red-winged/Tricolored Blackbird
Bronzed/Brown-headed Cowbird
Mitred/Red-masked Parakeet
parrot sp.
White-crowned/White-throated Sparrow
Downy/Ladder-backed Woodpecker
large alcid sp.
large falcon sp.
Amazona sp.
Bullock's/Baltimore Oriole
Nuttall's/Ladder-backed Woodpecker
new world goldfinch sp.
Sagebrush/Bell's Sparrow (Sage Sparrow)
California/Gambel's Quail
Ammospiza sp.
Northern Cardinal/Pyrrhuloxia
Purple/Cassin's Finch
Dark-eyed/Yellow-eyed Junco
yellow-bellied kingbird sp.
Herring/Glaucous-winged Gull
Common/Yellow-billed Loon
Toxostoma sp.
Red-crowned/Lilac-crowned Parrot
new world flycatcher sp.
Spizella sp./American Tree Sparrow
Spotted/Eastern Towhee (Rufous-sided Towhee)
Long-eared/Short-eared Owl
Parasitic/Pomarine Jaeger
King/Clapper Rail
Bohemian/Cedar Waxwing
Black-bellied Plover/golden-plover sp.
American Black/Mottled Duck
Thick-billed/Common Murre
Psittacara sp.
Eurasian Moorhen/Common Gallinule
Spizella sp.
new world quail sp.
Sooty/Short-tailed Shearwater
Curve-billed/Bendire's Thrasher
corella/white cockatoo sp.
tanager sp. (Piranga sp.)
hawaiian honeycreeper sp.
Varied Thrush/American Robin
Lincoln's/Swamp Sparrow
Nelson's/Saltmarsh Sparrow (Sharp-tailed Sparrow)
Red-naped/Red-breasted Sapsucker
Passerina sp.
Golden-fronted/Red-bellied Woodpecker
Sturnella meadowlark sp.
estrildid finch sp.
sparrow/warbler sp. (trilling song)
solitary vireo sp.
Oak/Juniper Titmouse (Plain Titmouse)
Herring/Iceland Gull
American/Black Oystercatcher
Western/Eastern Cattle Egret
Eurasian/African Collared-Dove
black-and-white shearwater sp.
Yellow-bellied/Red-naped Sapsucker
francolin/spurfowl sp.
auklet sp.
Streptopelia sp.
California/Woodhouse's Scrub-Jay
Domestic lovebird sp. (Domestic type)
Red-whiskered/Red-vented Bulbul
large parakeet sp. (former Aratinga sp.)
King/Common Eider
House/Eurasian Tree Sparrow
procellariid sp.
Hammond's/Dusky Flycatcher
Grasshopper/Baird's Sparrow
White-winged/Yellow-chevroned Parakeet
Townsend's/Hermit Warbler
Chimney/Vaux's Swift
Bridled/Juniper Titmouse
Brown/Black Noddy
ptarmigan sp.
Buteo/eagle sp.
Pacific/Winter Wren
Ring-necked/Green Pheasant
moorhen/coot/gallinule sp.
Cooper's Hawk/American Goshawk
storm-petrel sp. (white-rumped)
Gray-tailed/Wandering Tattler
storm-petrel sp. (dark-rumped)
Cassin's/Blue-headed Vireo
Masked/Ruddy Duck
Lonchura sp.
oystercatcher sp.
Rose-breasted/Black-headed Grosbeak
Herring/Lesser Black-backed Gull
Common/Ruddy Ground Dove
Sooty/Bridled Tern
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 Three-toed/Black-backed Woodpecker
Summer/Scarlet Tanager
American/Greater Flamingo
Passer sp.
Sedge/Marsh Wren
Common/Wilson's Snipe
Scripps's/Craveri's Murrelet
golden-plover sp.
Botteri's/Cassin's Sparrow
Greater/Lesser Prairie-Chicken
Scripps's/Guadalupe Murrelet (Xantus's Murrelet)
American/Pacific Golden-Plover (Lesser Golden-Plover)
Masked/Nazca Booby
Scripps's/Guadalupe/Craveri's Murrelet
new world martin sp. (Progne sp.)
Laughing/Franklin's Gull
Red/Cassia Crossbill
Thraupidae sp.
Scolopacidae sp.
Common/Arctic Tern
Bay-breasted/Blackpoll Warbler
Snow/McKay's Bunting
Cory's/Great Shearwater
Cookilaria petrel sp.
Long-tailed/Parasitic Jaeger
Western Cattle/Yellow-billed Egret
Alder/Willow Flycatcher (Traill's Flycatcher)
Western/Eastern Wood-Pewee
Sharp-tailed/Pectoral Sandpiper
Clay-colored/Brewer's Sparrow
Red-eyed/Yellow-green Vireo
Leiothlypis sp.
LeConte's/Nelson's Sparrow
Yellow-billed/Black-billed Cuckoo
Common/Spotted Sandpiper
Gray-cheeked/Bicknell's Thrush
MacGillivray's/Mourning Warbler
cuckoo sp. (Cuculidae sp.)
Purple/Rock Sandpiper
Philadelphia/Warbling Vireo
Eastern/Chihuahuan Meadowlark
Golden-winged/Blue-winged Warbler
Shiny/Brown-headed Cowbird
Hydrobates sp.
Antrostomus sp.
Coccyzus sp.
nightjar sp.
Black-legged/Red-legged Kittiwake
Black-throated Gray/Hermit Warbler
Philadelphia/Red-eyed Vireo
Pheucticus sp.
Leach's/Townsend's Storm-Petrel (white-rumped)
White-winged/Stejneger's Scoter
Black-throated Gray/Townsend's Warbler
Hen/Northern Harrier
Common Ringed/Semipalmated Plover
Petrochelidon sp.
Connecticut/MacGillivray's/Mourning Warbler
screech-owl sp.
Ardea sp.
yellowthroat sp.
Hepatic/Summer Tanager
Phylloscopus sp.
Leach's/Townsend's Storm-Petrel
flamingo sp.
Eastern/Mexican Whip-poor-will
Long-tailed/Pomarine Jaeger
Smooth-billed/Groove-billed Ani
Hudsonian/Marbled Godwit
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
Thalasseus sp.
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
Cathartes sp.
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)
myna/starling sp.
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
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.
Snowy/Tristan/Antipodean Albatross
hornbill sp.