Daily Record: Chickadees arent signs of spring, since these cheery little birds are year-round Jersey residents. But they could signal a warming climate.
An interesting new study focuses on hybrid chickadees the offspring of northern black-capped chickadees and their southern relatives, Carolina chickadees in places where the two ranges overlap. Because the hybrid birds are infertile and cant reproduce, theyre found only in a long, narrow strip of territory stretching from Kansas to New Jersey.
The...