The Sierra Nevada bighorn broke off from their desert bighorn cousins to form a distinct subspecies some 600,000 years ago, according to John Wehausen, who has been studying the Sierra sheep for ...

The Sierra Nevada bighorn sheep was the first species to be listed under the Endangered Species Act in the 21st century. The species began its decline as far back as the mid-1800s upon the influx of ...

The Sierra Nevada bighorn broke off from their desert bighorn cousins to form a distinct subspecies some 600,000 years ago, according to John Wehausen, who has been studying the Sierra sheep for ...

The Sierra Nevada bighorn sheep was the first species to be listed under the Endangered Species Act in the 21st century, and in fact, listing should have happened much sooner. The species began its ...

While bighorn sheep exist in other western mountain ranges, the Sierra Nevada subgroup is genetically distinct — the remaining 350 sheep are all that remain of the species.

Volunteers with the Society for the Conservation of Bighorn Sheep install a rain collection system and artificial water ...

LEE VINING, Calif. -- Where the timber ends and granite stands against the clouds, four Sierra Nevada bighorn rams freeze for an instant -- noses facing the wind, horns curling from their heads ...

Bighorn sheep are skilled mountain climbers. But one group recently made it over the Sierra Nevada crest in record time. As part of an ongoing effort to return endangered Sierra Nevada bighorns to ...

FRESNO, Calif. (KFSN) -- Several state and federal agencies worked together to move a total of 19 Sierra Nevada Bighorn Sheep to the Cathedral Range in Yosemite National Park and the Laurel Creek ...

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 ...

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 ...

Bighorn sheep are skilled mountain climbers. But one group recently made it over the peaks of the Sierra Nevada crest in record time. As part of an ongoing effort to return endangered Sierra ...