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 ...

During the darkest days of Alaska’s winter, black-capped chickadees stuff themselves with enough seeds and frozen insects to survive 18-hour nights. Where chickadees spent those long nights was a ...

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 University ...