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 bighorn sheep ...

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Sierra Nevada bighorn sheep stand among grass and boulders in California. The wild sheep are one of the rarest large mammals in North America. (California Department of Fish and Wildlife) In a move ...

As the roar of a helicopter intensified, an unusual sight came into view: Suspended beneath the aircraft was a bighorn sheep. As soon as it reached the ground, a team ...

VALLEY OF FIRE — Blindfolded, sedated and dangling 100 feet above the ground in a net off a helicopter, dozens of bighorn sheep are less than a day away from a new beginning — if they make it at all. ...

In a move that reverses nearly a decade of practice, California wildlife officials have quietly begun to allow killing mountain lions in order to protect another iconic native—bighorn sheep. Though ...