Colorado Unit S71 Bighorn Sheep Hunting Guide

Colorado Unit S71 is a limited-quota bighorn sheep unit covering 643,469 acres of high-country terrain, with elevations ranging from 6,391 feet up to 13,991 feet. For hunters researching Colorado bighorn sheep hunting opportunities, S71 represents one of the state's rugged, high-elevation draw units where every hunt — including hunts for rams — is allocated through a limited-quota draw system. There is no general season here; hunters must draw a tag to hunt this unit at all.

With 83% of the unit in public ownership and 26% designated wilderness, S71 offers substantial access for hunters willing to tackle steep, remote alpine terrain. This is not an easy unit to hunt logistically, even for those lucky enough to draw a tag, and the data backs that up. Hunters evaluating whether to apply here need to understand both the opportunity and the physical demands this unit presents before investing years of points into a tag application.

HuntPilot Analysis: Is S71 Worth Applying For?

Based on harvest data compiled by HuntPilot across recent seasons, Unit S71 produces very low hunter numbers and modest, inconsistent success rates. In 2025, only 2 hunters pursued bighorn sheep in this unit, with 1 harvesting an animal — a 50% success rate. In 2024, 6 hunters went afield and 4 connected, pushing success to 67%. The year before, in 2023, 4 hunters hunted with 2 harvests (50%), and 2022 saw 8 hunters with 4 harvests, also landing at 50%. In 2021, success dropped to 33% across 6 hunters, and notably, 2019 produced a 100% success rate — though with just 3 hunters afield, that figure reflects an extremely small sample rather than a guaranteed outcome.

Taken together, these numbers tell an honest story: S71 is an extremely low-volume unit, with annual hunter counts rarely exceeding single digits. Success rates hover in the 33-67% range across most years, which is fairly typical for rugged bighorn sheep terrain where tags are precious and hunters often pass on marginal rams while holding out for a quality animal. The 100% season in 2019 should not be read as evidence this is an "easy" unit — with only 3 hunters, a single miss would have cut that rate to 67% or lower. The more reliable takeaway is that across six seasons of available data, roughly half of hunters who draw a tag here go home with a ram.

Regarding trophy potential, the counties overlapping Unit S71 show a limited history of trophy-class record entries. This doesn't mean quality rams aren't present — bighorn sheep hunts are inherently low-volume and low-data by nature — but hunters should not expect this unit to be a well-documented trophy factory based on available records. Given the terrain and remoteness, S71 appeals most to hunters who value a genuine wilderness-style sheep hunt and are willing to accept uncertain trophy outcomes in exchange for a true backcountry experience.

For hunters asking "is S71 worth applying for," the honest answer is: it's worth applying for if the goal is a challenging, scenic, low-pressure bighorn hunt in big country, not necessarily a near-certain crack at a record-book ram. The low hunter volume each year also means minimal competition in the field once a tag is drawn — whoever draws here is likely to have long stretches of this massive unit largely to themselves.

Herd Health & Harvest Trends

The multi-year harvest pattern in S71 reflects a small, stable bighorn population managed conservatively through tightly controlled tag numbers. Colorado Parks and Wildlife limits bighorn tags severely in units like this to protect herd health, and the low hunter counts (ranging from just 2 to 8 hunters annually across the last several seasons) confirm this is a boutique, quality-over-quantity management approach rather than a high-volume hunt.

Success rates bouncing between 33% and 67% most years (excluding the small-sample 2019 outlier) suggest hunters are finding rams but not always connecting — consistent with technical, physically demanding sheep terrain where a single bad weather window or a ram that holes up in nasty cliffs can end a season empty-handed. Hunters should plan for a real hunt, not a guaranteed tag-filling trip, even with the generally favorable success percentages.

Access & Terrain

Unit S71 spans a massive elevation gradient, from 6,391 feet at its lowest points to 13,991 feet at its highest — nearly 7,600 feet of vertical relief within unit boundaries. This is true high-alpine sheep country, and hunters should expect to spend significant time well above timberline in rugged, rocky basins and cliff systems where bighorns naturally live.

With 83% of the unit's 643,469 acres in public ownership, access is not the limiting factor here that it is in many Colorado units with heavy private land checkerboarding. The vast majority of this unit is open to hunters, giving DIY hunters legitimate opportunity to scout and hunt without needing to negotiate private land access. The 26% wilderness designation within the unit means a meaningful portion of the best sheep habitat falls under wilderness restrictions — no mechanized access, foot or stock travel only, and typically more demanding logistics for packing in gear, scouting, and packing out an animal.

Forum accounts from hunters who have drawn Colorado bighorn tags in neighboring high-elevation units describe this general region of the state as holding some of the highest average elevations in Colorado — rugged, beautiful, and slow to shed snow even into late summer. While those specific accounts reference other units, the terrain themes are broadly consistent with what hunters should expect in S71: steep basins, extended glassing sessions from high vantage points, and physically taxing stalks across broken rock and scree. Hunters should be in strong physical condition and prepared for multi-day backcountry stays, particularly if hunting the wilderness portions of the unit.

Given the combination of high public land percentage and significant wilderness acreage, hunters planning a S71 hunt should lean heavily on topographic planning tools to identify drainages, saddles, and basins worth glassing before ever setting foot in the unit. HuntPilot's mapping tools, including public land overlays, can help hunters identify likely access routes and glassing terrain within the unit's public boundaries ahead of a scouting trip.

Trophy Quality

Trophy record data for the counties overlapping Unit S71 shows a limited history of entries. This should be interpreted carefully: bighorn sheep units across the West generally produce far fewer record-book rams than elk or deer units simply because tag numbers are so restricted, and a "limited" trophy history is common even in units that produce solid, mature rams. Hunters should not read this as a unit incapable of producing a quality ram — rather, the data available simply doesn't support claims of a deep, well-documented trophy history the way some marquee Colorado sheep units can.

Hunters drawing a tag here should focus scouting efforts on locating mature rams through direct, in-season observation rather than leaning on historical trophy data, since that data is sparse for this specific area. Given the remote, high-elevation character of the unit, older rams that have avoided pressure in difficult-to-reach basins may well be present even without a strong paper trail of entries.

How to Apply

Bighorn sheep hunting in Colorado, including Unit S71, is managed entirely through a limited-quota draw system — there is no over-the-counter or general season option for this species in this unit. Every hunter who wishes to hunt S71 must apply through Colorado Parks and Wildlife's big game draw and be selected for one of the limited tags allocated to the unit.

Colorado's sheep draw operates on a preference point system, where hunters accumulate points in years they apply but aren't drawn, improving their position in future draws. Colorado uses a true preference-point structure, meaning hunters holding the most points are prioritized in the draw ahead of those with fewer points — this is not a simple weighted lottery, and a high enough point total has historically been capable of securing a tag in many Colorado hunts. Residents and nonresidents apply through separate pools, and nonresidents should expect substantially more competition for the limited tags available given the fixed nonresident allocation built into Colorado's system.

Because bighorn sheep tags are among the most competitive draw tags in the West, many hunters spend a decade or more accumulating points before becoming competitive for quality units. Hunters serious about eventually hunting S71 should begin applying as early as possible to start building preference points, understanding that a successful draw will reset their point total, requiring them to rebuild from zero for future applications.

Application structure, deadlines, and fees change from year to year and are not included here. For current application windows, fees, and draw odds specific to Unit S71, visit HuntPilot's Colorado state page at /states/co or the unit-specific page at /units/s71 for the most current data.

Frequently Asked Questions

What is the terrain like in Colorado Unit S71? Unit S71 is high-alpine sheep country, with elevations spanning from 6,391 feet to 13,991 feet across 643,469 acres. Expect steep, rocky basins, cliff bands, and terrain well above timberline in the areas where bighorns concentrate. With 83% public land and 26% wilderness, access is generally strong, but the physical demands of hunting this terrain — especially in wilderness-designated areas requiring foot or stock travel — are significant.

What is harvest success like in Unit S71? Based on recent seasons, success rates in S71 have generally ranged between 33% and 67%, with very low overall hunter numbers (typically fewer than 10 hunters per year). A single season in 2019 posted 100% success, but with only 3 hunters afield, that figure should be viewed as a small-sample outlier rather than a dependable trend. Most years show that roughly half the hunters who draw a tag here go on to harvest a ram.

How big are the bighorn sheep in Unit S71? Trophy record data for the counties overlapping S71 shows a limited history of entries, meaning there isn't a strong documented track record of record-book rams coming from this specific area. This doesn't rule out mature rams being present, particularly given the remote, rugged nature of the unit, but hunters shouldn't expect this to be a unit with a deep trophy pedigree based on available data.

Is Unit S71 worth applying for? For hunters seeking a true wilderness-style bighorn hunt with minimal competition in the field, S71 is a reasonable unit to target — low hunter volume, strong public land access at 83%, and genuine backcountry character make it appealing for hunters who prioritize experience and solitude. Hunters chasing documented trophy genetics may want to weigh the limited trophy record history against units with stronger historical production before committing years of points to this specific unit.

Does Unit S71 have a general season for bighorn sheep? No. Every bighorn sheep hunt in Unit S71 is allocated through Colorado's limited-quota draw system. There is no general or over-the-counter option — hunters must successfully draw a tag through Colorado Parks and Wildlife's big game draw to hunt sheep in this unit.