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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Mountain chickadees are unusual in having more complex calls than songs. Vladimir Pravosudov I approach a flock of mountain ...

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 ...

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 ...

While most people have put their lives on hold to practice social distancing, Spring isn't slowing down--Daffodils continue stubbornly pushing to the sky & chickadees keep singing their hearts out.

I approach a flock of mountain chickadees feasting on pine nuts. A cacophony of sounds, coming from the many different bird species that rely on the Sierra Nevada's diverse pine cone crop, fill the ...