The first time I heard the chirping, at dusk, I thought it was an odd species of nocturnally active bird. The chirps were high-pitched, like the sound of a basketball player’s sneakers squeaking ...

The American green tree frog is a staple of summer nights in the U.S. South, where its groaning call echoes through countless swamps, forests, fields, and backyards. Yet even for many people who share ...