The world's largest grouse — males gather at traditional lek sites on sagebrush flats from March, inflating yellow air sacs with booming acoustic displays at dawn.
North America's smallest grouse turns pure white in winter and peppered brown-gray in summer — found above treeline on Trail Ridge Road and around Rocky Mountain NP tundra.
The electric cerulean-blue male is one of Colorado's most beautiful birds — hovers over mountain meadows hunting insects and nests in nest boxes throughout the high country.
A Colorado endemic breeding subspecies — the only Rosy-Finch species found nowhere else, nesting on rocky cliffs above 4,000 m and foraging on snowfields.
Harvests up to 98,000 whitebark pine seeds per year, caching them in thousands of sites and recovering them months later using an exceptional spatial memory.
Colorado's state bird — the striking black-and-white male sings a rich, melodic song while fluttering above the shortgrass prairie in spectacular aerial display flights.
North America's only aquatic songbird walks on stream bottoms and nests behind waterfalls — Boulder Creek and Clear Creek in the Front Range are reliable year-round.
North America's largest buteo — the rich rufous-and-white adult is unmistakable soaring over Colorado's eastern prairie, where it nests on clifftops and haystacks.
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