Of South Dakota’s 746 mule deer records, the great bulk sits west of the Missouri River, where Pennington, Jackson, and Custer counties lead. Badlands National Park tops the site list with 273 records, and Custer State Park, Wind Cave National Park, and Black Hills National Forest carry the Black Hills share.
A deer of open, broken country
The oversized ears, rope-like black-tipped tail, and stiff-legged bounding gait set mule deer apart from the white-tailed deer that dominate the state’s wooded river bottoms. Mule deer are browsers first, working shrubs, forbs, and juniper across broken prairie and open slopes rather than grazing tight meadows, which suits the Badlands formations and the dry western Black Hills. Mount Rushmore National Memorial and Black Elk Wilderness add records from steeper granite country.
Rut, fawns, and a long western winter
Mule deer stay on the landscape year-round, shifting to sheltered draws and south-facing slopes when winter bites. The November rut brings mature bucks into the open, and fawns arrive in late spring and early summer; South Dakota’s records build from May through July, the season when does with spotted fawns are most often seen at dawn and dusk.
Status in South Dakota
NatureServe ranks the mule deer S5, Secure, in South Dakota, and the species is native to the state. USGS NAS does not list it as nonindigenous here.
Full species profile
