Black-capped (Poecile atricapillus) and mountain (P. gambeli) chickadees are common backyard birds native to the Colorado Front-Range with broadly overlapping distributions in western North America.

Biologists know that climate change is causing southern species' ranges to move northward in the Northern Hemisphere. But little research has been done on the indirect ways climate change is ...

I approach a flock of mountain chickadees feasting on pine nuts. A cacophony of sounds, coming from the many different bird species that rely on the Sierra Nevada’s diverse pine cone crop, fill the ...

Hybrids of two common North American songbirds, the black-capped and mountain chickadee, are more likely to be found in places where humans have altered the landscape in some way, finds new CU Boulder ...

Black capped chickadees are one of the most common birds to visit backyard feeders. They seem to be common everywhere and especially enjoy eating sunflower seeds, peanuts, and suet. Chickadees are ...

We have an abundance of black capped and mountain chickadees throughout the winter. How do they do it? They are all of 3.5 ounces and 3-5 inches long — and very active! Chickadees are in the family of ...

A black-capped chickadee by any other name is a Poecile atricapillus. That’s the bird’s scientific name, the reference used worldwide to avoid the confusion a list of local names could offer. For ...

Scientists have found that hybrid chickadees have marked deficiencies in learning and memory compared to their pure species parents, a possible selective disadvantage. The study is the first to ...

Wet snow pelts my face and pulls against my skis as I climb above 8,000 feet in the Sierra Nevada of eastern California, tugging a sled loaded with batteries, bolts, wire and 40 pounds of sunflower ...