These tiny frogs have an enormous voice for their size, and the recent warm evenings have been filled with their lovely chorus.

Put a microphone outside overnight in Southern California not far from the urban sprawl, and you might be surprised how much you can hear. (SOUNDBITE OF ANIMAL HOWLING) SUMMERS: But for scientists ...

Herpetologist David Mora reaches for a red-legged froglet in a restoration pond that is part of a cross-border effort to bring back the native species in both Baja California, Mexico, and Southern ...

THE SANTA ROSA PLATEAU ECOLOGICAL RESERVE, Calif. (AP) — The scientist traipses to a pond wearing rubber boots but he doesn’t enter the water. Instead, Brad Hollingsworth squats next to its swampy ...