MILWAUKEE - One of Wisconsin's smallest and toughest birds just so happens to also be one of our first signs of spring. In January, a noticeable new sound can be heard across forests, neighborhoods ...

Myriad bird species will be flying through northern Illinois in the next couple of months, filling the region with bird songs as they fly to their northern breeding grounds or establish nesting spots ...

Mountain chickadees in Boulder have evolved a different tune to avoid getting mixed up with their cousins, according to a new CU Boulder-led study published Oct. 9 in the Journal of Evolutionary ...

It might sound like all chirps to you, but birds convey different messages, even across species. Language has long been considered the exclusive provenance of humans. But in the animal kingdom, birds, ...