Add Yahoo as a preferred source to see more of our stories on Google. In California's high mountain lakes, male frogs are in a race against time with only three weeks to find a mate before the water ...

Add Yahoo as a preferred source to see more of our stories on Google. A Pacific tree frog (Pseudacris regilla) male calls at Washington state's Conboy Lake National Wildlife Refuge. Cyril Ruoso, ...

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 ...

Across the animal kingdom, sound is more than communication—it's a signal of survival and success. From birds and primates to insects, fish, and amphibians, animals broadcast acoustic "advertisements" ...

In California's high mountain lakes, male frogs are in a race against time with only three weeks to find a mate before the water refreezes. Their croak speed is a precise thermometer that tells ...

As the winter snow thaws, frogs wake from brumation with a song in their hearts. This is no ordinary song. It is a song with a purpose.