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21,203 species in Colorado
Anser albifrons
Limosa fedoa
Anser rossii
Aythya marila
Zonotrichia querula
Setophaga ruticilla
Calidris mauri
Chlidonias niger
Calidris himantopus
Phalaenoptilus nuttallii
Rhynchophanes mccownii
Parkesia noveboracensis
Charadrius semipalmatus
Spiza americana
Phalaropus lobatus
Empidonax wrightii
Apis mellifera
Larus glaucoides
Lagopus leucura
Calidris melanotos
Corvus cryptoleucus
Aeropedellus clavatus
Sialia sialis
Calcarius ornatus
Numenius americanus
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