Scientists say the population of endangered Sierra Nevada bighorn sheep appears to have stabilized after suffering devastating losses during the record-breaking winter of 2022-2023. Tom Stephenson, ...

The high peaks of the southern and central Sierra Nevada are home to a unique and endangered animal, the Sierra Nevada bighorn sheep. John Muir called them “the bravest of all the Sierra mountaineers, ...

Yosemite National Park is home to several species that are endemic to the Sierra Nevadas, and many are protected by the park.

A survivor of three ice ages, the Sierra Nevada Bighorn Sheep, with populations documented living 300,000 years ago, is now on the endangered species list. These majestic animals struggle on in small ...

WASHINGTON — Snow cover in the Sierra Nevada is expected to shrink overall as the climate warms, but avalanche frequency could remain the same or even increase at high elevations. That’s bad news for ...

FRESNO, Calif. (AP) — More than 400,000 acres of wildlands in the Eastern Sierra Nevada should serve as a protected habitat for an endangered mountain sheep rebounding from the threat of extinction, ...

RENO, Nev. (AP) - Wildlife biologists say they're concerned that contact with domestic sheep could put an endangered population of Sierra bighorn sheep at risk for disease. Sheep ranchers call it a ...

The high peaks of the southern and central Sierra Nevada are home to a unique and endangered animal, the Sierra Nevada bighorn sheep. John Muir called them “the bravest of all the Sierra mountaineers, ...