Sought-afterUngulates

Yellowstone Bighorn Sheep

Cliff specialists — November rut head-clashes.

Cliffs

Habitat

Nov

Rut (head-clashes)

30 lb

Ram's horns (pair)

25 yd

Min distance

Overview

Bighorn sheep (Ovis canadensis) are built for steep, rocky ground: split hooves with rubbery pads for grip, keen eyesight, and a low center of gravity. They escape predators simply by going where nothing else can follow.

To find them, scan cliffs, talus slopes, and high ridges with binoculars. Rams have full-curl horns; ewes have short sickle-shaped horns.

Where to find them

Mount Washburn & Dunravan Pass: Sheep on the slopes above the road (summer/fall).
Gardiner / North Entrance: Ewes and lambs on the cliffs year-round.
Specimen Ridge: Remote high country for rams.

When to look

Daytime, summer and fall. The November rut brings echoing head-clashes between rams.

⚠️Stay at least 25 yd away

25 yards (23 m) minimum. Give them space on cliffs — never pressure sheep near a drop-off.

Want the full interactive data? Open the Wildlife Explorer to see Bighorn Sheep's viewing areas on the map, and explore all 17 animals with their field guidance.

Planning when to go? See weather, daylight, and what else is active in our month-by-month wildlife guide — best for Cliffs habitat in bighorn sheep.

Frequently asked questions

How do I tell a ram from a ewe?+

By the horns. Rams have large, tightly curled horns that form more than a full circle; ewes have shorter, slighter horns that curve back like a sickle without curling. Rams are also much larger.

When is the bighorn rut?+

November. Rams compete for ewes by rearing up and crashing their horns together — the clashes echo across the ridges. Dramatic but harder to watch than the elk rut (rugged terrain).

Where can I see bighorn sheep?+

Steep rocky terrain — Mount Washburn and Dunravan Pass in summer/fall, and the Gardiner/North Entrance cliffs year-round. Scan rock faces with binoculars.

Sources & data notes

Bighorn Sheep data is drawn from official NPS, USGS, and NOAA sources catalogued in our source registry. Observer-submitted sightings are not published on this public guide.
Bighorn Sheep is documented via NPS reference pages; no dedicated population time-series is in the public dataset.

NPS Yellowstone mammals overview — National Park Service (Official mammal checklist/context page with current park-level population notes; not point data.)
NPS Yellowstone wildlife overview — National Park Service (Official wildlife viewing and habitat context; not observation records.)

Spotted something off, or want a deeper dive? Every claim above links to its original source — look for the ↗ markers and the Sources section.