Learn what Clark's nutcracker looks like and sounds like. Plus, learn how the birds' food-caching ways help forests and when ...

The Jeffrey pine, one of the iconic trees of the Sierra Nevada, appears to have eclipsed other pines to become the ...

UC Davis Professor Hugh Safford was hiking for pleasure in California's High Sierra when he stumbled upon a new elevation ...

Some 1 million birds were in Colorado on Tuesday. Colorado and other Rocky Mountain states have altitudinal migrants, such as the Clark's nutcracker, the mountain chickadee and rosy finches.

Irruptions often coincide with movements of pinyon jay, Steller’s jay, and Clark’s nutcracker. Vagrant: casual to southwestern British Columbia, eastern Washington, southeastern California ...

More than 100,000 birds were in Utah on March 18. Utah and other Rocky Mountain states have altitudinal migrants, such as the Clark's nutcracker, the mountain chickadee and rosy finches.