Bighorn Sheep

When in Big Sky, be on the look out for the gregarious Rocky Mountain bighorn sheep in cliff areas and near the entrance of Big Sky on Highway 191.

  • Bighorn sheep are often spotted near the entrance of Big Sky, MT on Hwy 191.
  • They prefer rocky cliff areas.
  • They are social mammals and congregate in groups.
  • Rams have massive horns that weigh more than all the bones in their body.
  • Lambing occurs from late April to late June.

Overview

Bighorn sheep are considered the most social of all mammals in the region. While certain subspecies of bighorn sheep are on the decline in some parts of the West, the Rocky Mountain bighorn sheep in southwest Montana is considered healthy.

Bighorn sheep are one of three species of mountain sheep in North America with large horns; the other two being the Dall Sheep and Snow sheep. A Rocky Mountain bighorn ram’s horns weigh more than all the bones in his body – combined.  At an average length of 45 inches long, these horns help the ram both protect himself and ensure that he is able to mate during the rut season.  A female's horns are think and are typically only 6 to 13 inches inches long.  Rams can weigh up to 300 lbs. and ewes up to 150 lbs as adults.

Interesting Facts

  • Males are called “rams” and females are referred to as “ewes.”
  • Usually found on south facing aspects of hills and cliffs.
  • Ewes are considered promiscuous.
  • Rut season is in November.
  • Lambing occurs from late April to late June.

Best Places for Viewing bighorn sheep

Along the entrance to Big Sky on Highway 191 and along cliff areas in the mountains surrounding Big Sky.

Respecting Wildlife

Bighorn sheep are not often near roadways. You are more likely to encounter them when hiking. As with all wildlife, please keep a safe and respectful distance between you and the animal. 25 yards is considered a safe distance.

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