In 1980, a band of bighorn sheep were captured from the Sun River area along the Rocky Mountain Front and moved to a foreign landscape to the east, north of Montana’s massive Fort Peck Reservoir.

Researchers in the Bitterroot Valley have seen significant mortality in bighorn sheep over the winter, with all collared rams ...

Other herds have boomed and then went bust. Some barely trickle along at low populations unable to rebuild. Scientists have searched for answers, capturing and collaring wild sheep to track their ...