Like the majority of Colorado’s big game species, the success of Rocky Mountain bighorn sheep is up against habitat loss and disturbances, a changing climate and growing recreation and human pressure.

Bighorn sheep have become a rarity in Texas, but a group of wildlife biologists are on a mission to rescue the species. About 50% of the state's bighorn sheep population was decimated in the last five ...

ALBUQUERQUE — Eight Rocky Mountain bighorn sheep from the Gila National Forest have died since late December from a highly virulent disease that has potential to kill entire herds, but experts hope ...