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
Rocky Mountain Bighorn Sheep Success Rates
Rocky Mountain Bighorn Sheep Draw Odds
Draw odds data not available for this specific unit/species combination in our database.
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Frequently Asked Questions
What makes Unit 20 different from other Wyoming bighorn sheep units?
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What makes Unit 20 moose hunting more accessible than other Wyoming units?
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Every fact on this page is tied to a primary source below. Last fact-checked 2026-04-18.
- 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
- WGFD Hunting Regulations Hub — Wyoming Game and Fish Department · supports: License classes, Season proclamations · accessed 2026-04-18
- WGFD Hunt Planner — Moose — Wyoming Game and Fish Department · supports: Unit 20 moose season structure, Tag quotas, Unit boundaries · accessed 2026-04-18