The Annual Bison Roundup at Tallgrass

By Ron Stauffer TULSA, Okla. — It’s a cold and foggy morning at the Tallgrass Prairie Preserve, where cowboys work for the second day in a row in their week-long annual bison roundup. For the past three weeks, they’ve used four-wheelers and pickup trucks to round up the nearly 1,500 bison that call the nature […]