The Custer State Park in Western South Dakota held it's yearly "Buffalo Roundup" on Sept. 27th & 28th.  Travel South Dakota reports that there are approximately 1,300 buffalo in the herd. Note: The big bull bison are not included in the Roundup because they are more aggressive and are simply hard to round up. Because of this, visitors may see them scattered throughout the park during the Roundup weekend.

The Buffalo Roundup is part of Custer State Park's management plan to maintain a healthy balance between the number of bison and the available rangeland forage. The park can only sustain a certain number of bison, based on the condition of the grassland and how much food is available. The Buffalo Roundup also allows for some of the animals to be sorted out of the herd, they are then sold at an auction in November.

South Dakota Custer State Park Buffalo Roundup / Dept. of Tourism
South Dakota Custer State Park Buffalo Roundup / Dept. of Tourism
South Dakota Custer State Park Buffalo Roundup / Dept. of Tourism