Desert Bighorn Sheep (Ovis canadensis nelsoni) ewe and two lambs, Valley of Fire State Park, Nevada, United States of America, North America

Two bighorn sheep (Ovis canadensis) rams head butting, Clear Creek County, Colorado, United States of America, North America

Two bighorn sheep (Ovis canadensis) rams head butting, Clear Creek County, Colorado, United States of America, North America

Two bighorn sheep (Ovis canadensis) rams butting heads during the rut, Clear Creek County, Colorado, United States of America, North America

Two bighorn sheep (Ovis canadensis) rams during the rut, Clear Creek County, Colorado, United States of America, North America

An adult female bighorn sheep (Ovis canadensis nelsoni), with two lambs in Grand Canyon National Park, Arizona, United States of America, North America

Two bighorn sheep (Ovis canadensis) rams butting heads during the rut, Clear Creek County, Colorado, United States of America, North America

Two young bighorn sheep clamber down a steep sandstone cliff at sunrise in the White Domes area of Valley of Fire State Park, Nevada.

Bighorn Sheep ram (Ovis canadensis) courts a pair of ewes during the rut in the North Fork of the Shoshone River valley near Yellowstone National Park; Wyoming, United States of America