Which squirrel call is best? You have probably heard a squawk when you pass by a tree and assumed it was a bird. Chances are, that sound was made by a squirrel. Squirrels are very vocal. Using a ...

The January woods were snow-packed and silent as I sat against a tree, my folding stool perched atop a hardened snow drift. Despite my best efforts, it was now past the first of the year and I still ...

Behavioral Ecology and Sociobiology, Vol. 75, No. 6 (June 2021), pp. 1-15 (15 pages) Acoustic signals are one of the reproductive isolation mechanisms that can be a driving force for speciation.

University of Arizona researcher Allie Burnett knows more about the elusive Harris’ antelope ground squirrel than practically anyone in the world. “They’re not chipmunks,” Burnett often corrects ...