Why Do Red Crossbills Have Scissor-Like Bills?

Crossbill Evolution by Michael K. Schwartz Broadcast 6.2 & 6.5.2020   Listen:   As winter faded into spring and the last remnants of snow remained in shadowy patches atop higher peaks, I wandered into the Rattlesnake Wilderness, outside of Missoula,...

Singing in the Snow

Singing in the Snow by Wenfei Tong Broadcast 3.5 and 3.10.2017 Listen:   If you go cross-country skiing in the North American woods, you’re likely to hear all manner of twittering and chattering as flocks of birds like chickadees, finches, and nuthatches bustle...