At a Laingsburg nature center, spring nights come alive with frog croaks, bird calls and cricket chirps. A group of hikers ...

Frogs need water. Almost all of the world's 7,900 known frog species breed in fresh water. And when it rains, these amphibians erupt into a chorus of calls—croaks, trills, cheeps and bellows—to ...

A Pacific tree frog (Pseudacris regilla) male calls at Washington state's Conboy Lake National Wildlife Refuge. Cyril Ruoso, Nature Picture Library When ice and snow begin to melt in California's high ...

Their shrill overture of fecundity can be heard in abundance at Middle Creek Wildlife Management Area (just south of Kleinfeltersville) when the spring peepers come out of hibernation. "That's a ...