Just as last year, this September we found Bighorn Sheep in South Dakota’s Badlands National Park. These regal mammals are introduced to the park. Native Bighorns were extinct in the state by the early 1900s. All now are the result of repeated introductions.
These two sheep were part of a band of about a half-dozen individuals. The bands often combine to form herds. Band size depends on environmental conditions. Sexes may form separate groups and females may form nursery bands. The sexes usually intermingle during winter. During breeding season, only one female breeds in a given band (Higgins et al. 2000).