The Bighorn sheep rut, or mating season, occurs every fall. Male sheep, or rams, establish dominance hierarchies amongst themselves through fierce head-butting competitions. Rams then seek herds of ewes, or female sheep, where they engage in courtship displays. Unlike elk, Bighorn males do not tend to a single harem--instead, they move between herds finding the most estrous ewes. Spend a Minute Out In It with this herd of Bighorn, as they feed together on the rim of the Canyon on a crisp fall morning.