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 ...

The puzzle needs to be solved before FWP moves to transplant any more sheep into the area, he added. Disease, drought and predators like mountain lions have all been blamed for the herd’s demise.

The bighorn sheep population in the western North Dakota grasslands is down 4% from the previous year's record count, but still 6% above the five-year average.