8 Most Common Birds of Colorado 

Small, sparrow-like bird, 6 inches, .88 ounces, orange-red males, gray-brown females. Feeds on seeds, nests in trees. Common in North America.

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House Finch

Large woodpeckers, 12.5 inches, 4.6 ounces. Varied markings, distinctive calls. Forage for ants. Nest in tree cavities. Hybridize east-west species.

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American Robin

Large woodpeckers, 12.5 inches, 4.6 ounces. Varied markings, distinctive calls. Forage for ants. Nest in tree cavities. Hybridize east-west species.

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Northern Flicker

Small, acrobatic bird with black cap, white face. Forages in flocks, nests in cavities, and sings a distinctive "see bee, see bee" song.

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Black-capped Chickadee

29.9-43.3 in, 105.8-317.5 oz, 50-66.9 in wingspan. Habitat: fields, water. Features: white cheeks, black heads, V-shaped migration.

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Canada Goose

Small, sparrow-like birds. Males are orange-red, sing a warbling song. Feed on seeds, buds. Nests in trees, urban areas. Released in 1939 on Long Island.

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Mallard

Bold Black-billed Magpie, 19 inches, distinctive "reh reh" song. Omnivorous, nests in domes, forages in groups, often on large animals.

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Black-billed Magpie

Sparrow-like, 6.25-inch birds with gray/brown plumage, feeding on seeds and insects. Notable for their "sipsip" song, common in North America.

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Dark-eyed Junco

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