The mountain yellow-legged frog was once the most abundant amphibian in Southern California's Sierra Nevada and Transverse Ranges. Just decades ago, it was hard to walk around many of California's ...

Today, the 2-inch to 3-inch-long frogs are absent from about 70% to 90% of their historical range. But the fortunes of the Sierra Nevada yellow-legged frog may be turning. Researchers behind a 15 ...

The U.S. Fish and Wildlife Service today proposed to designate 760,071 acres of critical habitat under the Endangered Species Act for the foothill yellow-legged frog. The areas to be protected lie ...