
Two distinct ecosystems, the Rocky Mountains and everything in the state east of the Rocky Mountains provides the basis for explaining Colorado’s wonderful bird diversity.
The Colorado Field Ornithologists released a bird list noting over five hundred different species documented to date. They range from the small backyard birds to the larger raptors.
The grasslands east of the Rockies are the final stretch of the great Midwestern plains. Colorado’s state bird celebrates that plains heritage. The male Lark Bunting is a sparrow of the plains that turns into an elegant looking black feathered wonder during the breeding season. It resembles the female with a more dull grayish set of feathers during the non-breeding season.
The area is also a great place to see many of the so called high-priority grassland birds indigenous to the area. Ferruginous Hawks, Swainson’s Hawks, Golden Eagles, Burrowing Owls, Mountain Plovers, Prairie Falcons, McCown’s and Chestnut-collared Longspurs, Vesper, Grasshopper, Cassin’s and Brewer’s Sparrows all make a home in the area.

Colorado also means Rocky Mountain birds. Depending on the source, the general region hosts approximately 270 species of birds. The Rocky Mountain National Park provides the gateway for much of Colorado birding, at least on the tourist end. Visitors to the area soon discover that birding the Rockies can also be organized into a few locations around the Rocky Mountain National Park, including the Arapaho National Recreation Area, and the towns of Estes Park and Granby.
Juvenile White-crowned Sparrow
Chipping Sparrow
Junco
Pine Siskin
Black-capped Chickadee
Bushtit
Cedar Waxwing
Northern Flicker
Female Red-winged Blackbird
Male Red-winged Blackbird
Yellow-headed Blackbird
Scrub Jay
American Pipit
Brown Creeper back
Crow
Robin
Starling
Turkey
Western Meadowlark
Female Goldfinch
Male House Finch
Female House Finch
Male Lesser Goldfinch
Female Lesser Goldfinch
Magpie
Red Crossbill
Bald Eagle
Osprey
Orange Crowned Warbler
Yellow-rumped Warbler (female)
Wilson’s Warbler
Water Birds
Blue Winged Teal
Female Common Merganser
Male Common Merganser
Readhead Duck
Ringneck Duck
Female Northern Pintail