it’s probably a mountain chickadee. These little birds forage in high coniferous Western forests, from Canada to near the Rio Grande. They nest in dead aspens because the soft wood is easy to ...

An “interior western” group is large and pale-backed ... Although the mountain chickadee is the black-capped’s closest relative, the Carolina chickadee likely will cause the most trouble ...

The chestnut-backed chickadee is curious about humans, and spends the postbreeding and winter seasons foraging noisily in mixed-species flocks. Unlike other parids (except for the mountain ...

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 ...