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Ovis canadensis
Bighorns are named for the rams' large, curling horns. They are brownish tan with a tan/white rump. The males may weigh up to 143 kg (300 pounds). Ewes are considerably smaller and while having horns as well, their horns are shorter, more slender, and tend not to curve as much. These are rams in a bachelor flock in Yellowstone National Park.
High rocky cliffs and alpine meadows in western US and Canada. Desert bighorns are found in the US Southwest and range into Mexico.
I've often spotted bighorn rams near this location in Yellowstone (I've never seen ewes or lambs here), but usually only two at a time. In this instance, there were 13 rams all clustered together in this little meadow.
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