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4,118 species in Yellowstone National Park
Colaptes auratus
Tachycineta bicolor
Petrochelidon pyrrhonota
Actitis macularius
Charadrius vociferus
Fulica americana
Perisoreus canadensis
Molothrus ater
Agelaius phoeniceus
Sitta canadensis
Piranga ludoviciana
Bucephala albeola
Cinclus mexicanus
Mareca americana
Ardea herodias
Pelecanus erythrorhynchos
Cervus canadensis
Haemorhous cassinii
Passerculus sandwichensis
Xanthocephalus xanthocephalus
Spatula cyanoptera
Pooecetes gramineus
Anas crecca
Histrionicus histrionicus
Vireo gilvus
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