Description:
Bison Rut, Yellowstone National Park video.
Video of two bison bulls fighting during the rut. Yellowstone National Park, August 3, 2026.
Canon C200 video camera, Canon 800mm lens.
A symptom of Brucellosis infection is seen in the enlarged testis sac of one bull.
This version is 1920x1080 pixels, frame rate 29.97.
Higher resolution version available (3840x2160) and original frame rate (59.94fps).
