Bighorn or sheep ranching on your wildlands?

MONO COUNTY CA -- On the hunt for rare Sierra Nevada bighorn, and threats to their survival and recovery.

A top historical threat to bighorn is fatal disease spread by subsidized domestic sheep grazing in bighorn habitat. In Arizona and other western states domestic sheep spread diseases have wiped out entire bighorn herds.

Domestic sheep are still a big threat to the endangered Sierra Nevada bighorn, especially on Humbolt-Toyaibe National Forest public lands.