In the 1950s, California wildlife authorities used to fly over remote lakes and creeks in Yosemite National Park and deliver precious cargo: hatchery-raised trout. The policy was great for fishing ...

U.S. Geological Survey biologist Elizabeth Gallegos leads her team on a hike to release Southern California mountain yellow-legged frogs into a pair of remote creeks in the San Gabriel Mountains.

Marlowe Robertson-Billet carefully scooped three-inch tadpoles from a fish tank into plastic bags, then quickly piped in pure oxygen from a steel tank. Along with a team of zookeepers and biologists ...

For the first time in nearly 50 years, a population of a nearly extinct frog has been rediscovered in the San Bernardino National Forest's San Jacinto Wilderness. Biologists retracing a 1908 natural ...

Up to only a few inches in length, with a lemon-hued belly, the foothill yellow-legged frog may seem unassuming. But its range once stretched from central Oregon to Baja California. In 2023, it was ...

OAKLAND (BCN) -- Thirty-three Sierra Nevada yellow-legged frogs leapt into the wild Wednesday and Oakland Zoo officials hope they will help restabilize their species. The Sierra Nevada yellow-legged ...

Getting your Trinity Audio player ready... Shortly after World War II, California fish managers had a brainstorm: They loaded juvenile trout into airplanes and saturation-bombed naturally fishless ...

SAN BERNARDINO (CBSLA) — A group of mountain yellow-legged frogs have been reintroduced to the San Bernardino National Forest, nearly 20 years after its population was nearly wiped out in Southern ...

SAN FRANCISCO— The California Fish and Game Commission, in response to a Center for Biological Diversity petition, voted today to designate all populations of the mountain yellow-legged frog as a ...

For some species of frogs, sex gets pretty chaotic. The amphibians gather in large groups near bodies of water—a preferred egg-laying spot—and the males go into a frenzy, trying to grab onto any ...

A recent study found a large-scale increase in the endangered Sierra Nevada yellow-legged frog in Yosemite National Park in California. The sevenfold increase is due to fewer predatory trout and ...