Disease, drought and predators like mountain lions have all been blamed for the herd’s demise. Unfortunately, large die-offs ...

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.