American Bison: Lamar Valley, Yellowstone National Park, October 2024 — We found a particularly active and even feisty herd of Bison beside the road in the Lamar Valley. Dust bathing, or dust rolling, is a common behavior among Bison. It combats ticks and other insects that would otherwise make their home on the Bison’s hide. It can look pretty odd and the bison get into all kinds of contortions doing it. Sony a6700 with Tamron 50-400Di iii at 600mm equivalent. Program mode with my custom bird and wildlife modifications. Processed in Photomator and assembled in FrameMagic.