Although the mountain chickadee is the black-capped’s closest relative, the Carolina chickadee likely will cause the most trouble, especially in late spring and summer when the black-capped’s ...

You won’t want to miss these incredibly cute chickadee pictures. If folks around you are speaking with a southern drawl, chances are you’re in Carolina chickadee territory, in the Southeast ...

Black-capped (Poecile atricapillus) and Carolina chickadees (P. carolinensis) hybridize in a narrow band that stretches ... Zac Cheviron (University of Illinois), and Matt Carling (University of ...