The most widespread, numerous, and geographically variable chickadee, this bird brightens winter days at bird feeders and eagerly takes advantage of nest boxes ... Length 5.3". Black cap; white ...

Black-capped and mountain chickadees are closely-related species that co-occur in Boulder County but occupy different habitats based on elevation. The Boulder Chickadee Study leverages an extensive ...

Learn all about the chickadee birds. There are seven different species of chickadees in the U.S. All of them have snazzy dark caps and black bibs. Black-capped ... They nest in dead aspens because ...