The rarest of all seven U.S. species is the gray-headed chickadee. Unless there’s a polar bear reading over your shoulder, you’re probably not in this bird’s territory.

Discover how mountain chickadees use complex calls to communicate food sources, social interactions, and predator presence.

Birds often seen accompanying chickadees this time of year include warbler species like Blackburnian Warblers, Cape May Warblers, Tennessee Warblers, Bay-breasted Warblers, Black-and-White ...

Chickadees, those adorable bandit-masked visitors to bird feeders, are among the most familiar and beloved backyard birds in North America. They’re so good at spotting and scolding predators ...

Many other birds, including chickadees, cardinals and house finches, will eat safflower (and in the spring, the rose-breasted grosbeaks seem to seek out this seed).

Human disturbance. What this study cannot say is why these chickadee hybrids are more common in places where humans have changed the landscape, but it is the first-of-its-kind to examine this ...

Black-capped Chickadees don’t let food go to waste. These puffy little birds, with their oversize head and dark eyes resembling those of a Beanie Baby, are always hoarding extra grub such as ...

Birds often seen accompanying chickadees this time of year include warbler species like Blackburnian Warblers, Cape May Warblers, Tennessee Warblers, Bay-breasted Warblers, Black-and-White ...

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 ...