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 ...

There's more than meets the human ear when the black-capped chickadee lets its flock mates know a predator is lurking about by giving out its familiar "chick-a-dee-dee-dee" call. The small songbirds, ...

If you live in North America, you might have enjoyed the bright songs of black-capped chickadees or red-breasted nuthatches on your street. But you might not have known that those songs have lyrics.

Daytime and nighttime temperatures are inching downward now, and that means fall migration is picking up. The sagging cold front from earlier this week no doubt has ushered in some neotropical ...