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Wyoming Rocky Mountain Bighorn Sheep Moose

Unit 20 (Bighorn Mountains Foothills)

Wyoming Hunting Guide — Rocky Mountain Bighorn Sheep, Moose

Wyoming Hunt Area 20 covers the northern Bighorn Mountains and adjacent foothills in Sheridan County, from the Tongue River canyon area north toward the Montana border. Bighorn sheep in this unit use a range of elevations — from the foothill breaks and river canyon cliffs at 4,500 feet up to the sub-alpine ridges at 9,000 feet — creating a hunting environment distinct from the high-alpine units further south. Ram quality is solid, with mature animals in the 150–165 class. The foothills terrain is more physically forgiving than the deep alpine, and scouting opportunities along Bighorn County roads are excellent.

Rocky Mountain Bighorn Sheep Hunting in Unit 20

Wyoming Hunt Area 20 covers the northern Bighorn Mountains and adjacent foothills in Sheridan County, from the Tongue River canyon area north toward the Montana border. Bighorn sheep in this unit use a range of elevations — from the foothill breaks and river canyon cliffs at 4,500 feet up to the sub-alpine ridges at 9,000 feet — creating a hunting environment distinct from the high-alpine units further south. Ram quality is solid, with mature animals in the 150–165 class. The foothills terrain is more physically forgiving than the deep alpine, and scouting opportunities along Bighorn County roads are excellent.

Where to Find Bighorn Sheep in Unit 20

Unit 20 sheep are distributed across a broader elevation range than most Wyoming bighorn units, from the Tongue River canyon foothills to the sub-alpine Bighorn Mountain ridges.

Tongue River Canyon and Foothills (4,500–7,000 ft)

The Tongue River canyon and the rocky breaks along its tributaries hold sheep year-round in the sandstone and limestone cliff systems. This is lower-elevation sheep habitat accessible from county roads — sheep can sometimes be glassed from vehicle-accessible vantage points. The terrain is more moderate than the high alpine but still provides the security cliffs that sheep require.

Upper Foothill Ridges (7,000–9,000 ft)

The transition zone where the Bighorn foothills rise toward the Bighorn NF boundary holds rams that move between the lower canyon habitat and the higher mountain terrain seasonally. The open ridges and rocky outcrops in this zone are productive glassing terrain.

Seasonal Patterns

Sheep in Unit 20 tend to be more resident and less migratory than high-alpine sheep — the Tongue River canyon provides year-round security habitat. Rams are most visible during the October–November rut when they range more widely across the foothill terrain.

How to Hunt Bighorn Sheep in Unit 20

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Rocky Mountain Bighorn Sheep Success Rates

Wyoming bighorn sheep success runs 85–95% statewide for tag holders. Unit 20's accessible terrain and vehicle-aided scouting opportunities produce high success rates for hunters who locate rams before the season and develop solid approach plans.

Rocky Mountain Bighorn Sheep Draw Odds

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Unit 20 bighorn sheep tags are limited — typically 1–3 ram tags per season. Non-residents should expect to need 10–16 preference points. The foothills character and more accessible terrain make this unit attractive to a broad range of applicants, keeping the draw competitive. Apply annually.

Unit Logistics & Expectations

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Frequently Asked Questions

What makes Unit 20 different from other Wyoming bighorn sheep units?
Unit 20 is a lower-elevation foothills sheep unit centered on the Tongue River canyon and adjacent breaks in northern Sheridan County. Sheep range from 4,500 to 9,000 feet — much lower than the high-alpine Units 17 and 18 to the south. The terrain is more physically accessible and vehicle scouting is more practical than in the remote alpine units.
How many preference points do non-residents need for Unit 20 bighorn sheep?
Non-residents typically need 10–16 preference points to be competitive for Unit 20 ram tags. Tag numbers are very limited (1–3 per season). Apply annually through the WGFD draw system — Wyoming's 75/25 split means max-point holders draw first with a 25% random component for remaining tags.
What makes Unit 20 moose hunting more accessible than other Wyoming units?
Unit 20 sits in the northern Bighorn Basin where the terrain is lower-elevation foothills and riparian corridors rather than high wilderness mountains. The county road network allows vehicle-based scouting of the Tongue River willow flats and adjacent habitat. Hunters can day-hunt from Sheridan or Dayton rather than committing to multi-day backcountry camps. The unit's accessibility makes it attractive for first-time Wyoming moose hunters.
When is the best time to hunt moose in Unit 20?
Unit 20 moose hunting peaks during the October rut when bulls are actively seeking cows and respond well to calling. Early-season September hunts catch bulls in velvet feeding heavily in willow corridors. The rut window (typically late September through mid-October in Wyoming's northern units) is generally considered the best combination of bull activity and hunting opportunity.

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Sources & Verification

Every fact on this page is tied to a primary source below. Last fact-checked 2026-04-18.

  1. WGFD Hunt Planner — Bighorn Sheep — Wyoming Game and Fish Department · supports: Unit 20 bighorn sheep season structure, Tag quotas, Unit boundaries · accessed 2026-04-18
  2. WGFD Hunting Regulations Hub — Wyoming Game and Fish Department · supports: License classes, Season proclamations · accessed 2026-04-18
  3. WGFD Hunt Planner — Moose — Wyoming Game and Fish Department · supports: Unit 20 moose season structure, Tag quotas, Unit boundaries · accessed 2026-04-18