Bison Battle

My wife and I (actually more me) have been searching for bison during mating season for years but we always seem to miss it. Badlands National Park has a good sized herd that is accessible and the Park is without the mayhem of summer visitors like Yellowstone. I made some calls and got conflicting information but decided to head out there anyway for a few days. This battle was taken one morning and by late afternoon 500 bison had disappeared. Mating season may still be in progress but if it is taking place it's a secluded draw. I don't think I'll hike in to look for them.