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 ...

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

Seven species of frogs and one toad make the Northland their home. Each lays its eggs in water. Some stay in the water, others go off to live on land for the rest of the year. All give calls and songs ...

A study from the University of California, Davis, found that temperature affects the sound and quality of male frogs' mating calls. In the colder, early weeks of spring, their songs start off ...

A new study reports that city frogs sing more complex and attractive songs than their country cousins. Urban frogs can get away with producing more conspicuous mating calls, which are preferred by ...

When ice and snow begin to melt in California's high-elevation waters, male frogs hop into action. Emerging from hibernation, they head to lakes and ponds scattered throughout the area and begin ...

The scientist traipses to a pond wearing rubber boots but he doesn't enter the water. Instead, Brad Hollingsworth squats next to its swampy edge and retrieves a recording device the size of a deck of ...