A solo bighorn sheep was grazing on exposed grasses. They feed primarily on grasses; forage on shrubby plants in fall and winter.
This bighorn sheep (Ovis canadensis) eariler had occupied steep terrain in the upper Yellowstone River drainage, nine (9) miles outside of Yellowstone National Park. All bighorn sheep have horns and the rings on horns indicate the approximate age of these majestic and regal animals.
Bighorn sheep unfortunately have a susceptibility to disease. In the 1980s, a disease known as pinkeye felled many sheep, and other diseases and parasites take sheep each year.