3 Facts About The Rocky Mountain Bighorn: 1. Habitat: Rocky Mountain bighorn sheep (Ovis canadensis) are native to the Rocky Mountains of North America. They inhabit steep, rugged mountainous regions at elevations ranging from 5,000 to 14,000 feet. They are well adapted to these high-altitude environments. 2. Physical Characteristics: These sheep are known for their impressive size and appearance. Male bighorn sheep, called rams, are larger than females, known as ewes. Rams have massive curved h