Elk Research · By Josh Forcier · 7 min read · Updated 2026-09-30
What Elk Do When ATVs, Bikes, Hikers, and Horses Enter the Woods
What the 2009 elk recreation disturbance study found about ATVs, bikes, hikers, and horses, and what it means for public-land scouting.
Naylor, Wisdom, and Anthony studied how female elk responded to ATV riding, mountain biking, hiking, and horseback riding in northeast Oregon. The paper, "Behavioral Responses of North American Elk to Recreational Activity," was published in The Journal of Wildlife Management in 2009 (DOI: 10.2193/2008-102).
Recreation type, timing, and access pattern can change how much elk travel, feed, or rest during the day. One trail does not tell you how the whole basin hunts.
Not all human pressure looks like hunting
Scouting pressure often gets framed as hunters versus elk, but public land has more users than hunters. ATVs, bikes, hikers, horses, shed hunters, campers, and dog walkers can all shape how elk use space before and during the season.
When you look at a map, mark obvious recreation corridors before judging a POI. A bench beside a popular non-motorized trail may receive less noise than an ATV route, but it can still be part of a predictable disturbance pattern.
Morning disturbance deserves extra attention
The study reported strong travel responses during disturbance periods, with morning responses especially important. The sessions did not overlap the dawn feeding peak, so the study does not show how elk react to hunters walking in before daylight. Still, early disturbance is worth planning around.
If a trailhead fills before daylight, nearby elk may already be adjusting before you arrive. In that case, scout the covered exits from the recreation corridor rather than the corridor itself.
Motorized routes can dominate a pressure plan
ATV exposure produced the strongest travel response in the study. That does not make every motorized route equally bad, but it supports treating open motorized access as a major daylight pressure feature.
On a map, draw influence around open two-tracks, legal ATV trails, and easy vehicle loops. Then search just outside the obvious reach: timbered saddles, sidehill benches, and drainage folds where elk can hear or avoid disturbance without abandoning the whole basin.
What the study measured
Activity sensors on 13 female elk in a 1,453-hectare fenced area of Starkey recorded feeding, resting, and travel from April to October in 2003 and 2004, while ATV riders, mountain bikers, hikers, or horseback riders covered about 32 kilometers of routes twice a day in 5-day stretches. In quiet periods the elk spent less than 5% of each hour traveling, and the largest weekly increase, 7.27 percentage points more travel time than the paired quiet period, came during the first 5-day ATV treatment of 2003. Behavior returned to normal about 1 to 2 hours after each morning or afternoon session ended. The study did not map where the elk moved, involved no hunting, and its sessions did not overlap the dawn and dusk feeding peaks, so it cannot tell you how far elk shift from a trail or how they react to hunters walking in before daylight.
How to scout with this study
Use recreation pressure to separate pretty habitat from huntable habitat. Feed and water close to a busy trail may still get used at night, while the daylight setup shifts to cover with worse human access.
In RidgeRead, combine trails, road density, campsites, and terrain friction. A strong elk spot near recreation usually needs a reason elk tolerate the area and a nearby place they can retreat when people start moving.
Sources and scope
The linked paper reports results for its study animals, location and observation period. The scouting suggestions here are RidgeRead’s interpretation, not field validation of the app or a guarantee of the same behavior elsewhere.