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 ...

Without man-made reservoirs called guzzlers that were built in the late 1980s, desert bighorn sheep probably wouldn’t call Southern Nevada’s dry Muddy Mountains home, said Joe Bennett ...

We joined the Sierra Club in suing the city of Palm Desert and California Fish and Game Department over a housing project that would affect the Bighorn Institute, a federally recognized recovery ...