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21,203 species in Colorado
Sitta carolinensis
Hirundo rustica
Quiscalus quiscula
Larus delawarensis
Poecile gambeli
Troglodytes aedon
Falco sparverius
Zonotrichia leucophrys
Columba livia
Mareca strepera
Fulica americana
Setophaga coronata
Nannopterum auritum
Setophaga petechia
Cathartes aura
Cyanocitta stelleri
Sayornis saya
Spatula clypeata
Spizella passerina
Tyrannus verticalis
Megaceryle alcyon
Spinus pinus
Tachycineta thalassina
Sitta canadensis
Haliaeetus leucocephalus
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