Mule Deer
Photo: Calibas, CC BY-SA 3.0
Common everywhere on plains west of Missouri River. First observed by Corps near Niobrara (NE) and became diet staple.
In the NPS atlas of species the expedition described
Mule deer
Common everywhere on the Plains west of the Missouri River. First observed by the Corps near Niorbrara, NE and became a diet staple.
Encyclopedia of Life page for Mule deer (opens in a new tab) On the atlas map
Source: National Park Service, Lewis and Clark National Historic Trail Park Atlas.
Where it’s being seen today
56 research-grade iNaturalist observations between 2006–2026. Most recent: 2026-03-17. Sourced from Terrain360 trail captures, cached locally.
Journal References
15 journal entries mention Mule Deer