In the Hayden Valley area of Yellowstone National Park, a grizzly bear chased a herd of elk relentlessly. On this day, the elk managed to escape. At this time of year, when elk calves are being born, the grizzly stay busy hunting, trying to find the elk calves hidden in the sagebrush. For the most part, grizzlies are opportunists and often steal carcasses from the wolves so it is not often that we see one chase a whole herd of elk. This footage was filmed in 4K and saved in 4K but You Tube reduced it.
