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 ...

Sierra Nevada bighorn sheep learn to leap from crag to crag in early lambhood, developing quickly into keen-eyed, strong-limbed and extremely agile creatures, always on the move to escape mountain ...

Airlifting bighorn sheep back into the Sierra Nevada’s national parks. This March, a large helicopter thrummed over the 13,000-foot-high pinnacles of Yosemite National Park’s Cathedral Range with an ...

Two big rams bolted from the steel trailer, took a few hesitant steps and glanced around nervously at their new home: dramatic mountains in west Texas more than 200 miles from where they grew up.

In California, the Sierra Nevada bighorn sheep, which is listed as an endangered species, lost an estimated 40 to 60 animals. 'We're not including any predation or normal mortality or any other ...

The last documented sighting of a native was in 1958 in the Sierra ... The desert bighorn, distinct from its Rocky Mountain cousin, ranges from the Chihuahuan Desert here to Utah, Nevada and ...