South Dakota’s ten mapped black bear records sit almost entirely in the far southwest, around Black Hills National Forest, Custer State Park, and Wind Cave National Park. That’s the state’s only real block of conifer forest, granite peaks, and limestone caves rising out of the surrounding prairie and plains, the same kind of forested, broken cover black bears rely on across their whole range. NatureServe ranks the population S1, critically imperiled, in South Dakota, the lowest rank on its scale, reflecting how small and marginal this Black Hills population is at the edge of the species’ range.
Black bears are plant-heavy omnivores that eat on a calendar: grasses and leftover nuts in spring, berries and insects in summer, then whatever fattens them fastest before winter. In the Black Hills that likely means chokecherries, buffaloberries, insects, and carrion rather than the acorns and beechnuts bears rely on farther east, since ponderosa pine forest doesn’t produce the same nut crop.
All ten of South Dakota’s records fall in May, June, or July, with nothing recorded outside that window. That timing points toward a bear moving through the Black Hills ahead of denning season rather than steady activity across all four seasons, though a record set this small can’t rule out sightings that simply weren’t logged in other months.
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