
Based on 1,956 research-grade iNaturalist observations in Montana, Bighorn Sheep is most often recorded in July; in Montana it behaves like a summer visitor / breeder. It ranks #5 among mammals recorded in the state in our data.
Ovis canadensis
Bighorn Sheep in Montana by month
Bars show research-grade observations per month. They mix true seasonality with how often people are outdoors, so treat small numbers with caution.
Also seen in Montana in July

Mountain Goat

Columbian Ground Squirrel

White-tailed Deer

Hoary Marmot

Mule Deer
Common Golden-mantled Ground Squirrel
American Black Bear
Moose
Places to look in Montana
National ForestBitterroot National Forest
Makoshika State Park
National ForestBeaverhead–Deerlodge National Forest
Lewis and Clark National Forest
Helena National Forest
Madison Buffalo Jump State Park
FAQ
When does Bighorn Sheep appear in Montana?
Mainly June–September, with the most records in July.
How common is Bighorn Sheep in Montana?
It ranks #5 by number of iNaturalist observations among mammals in Montana (1,956 records in our sample).