Bison Returned From the Brink Just in Time for Climate Change

Ted Turner owns more than 100,000 acres of pristine land in southwest Montana, complete with lush grassland and forested hills rolling with Douglas firs. There are populations of wolves, black and grizzly bears, deer, elk and pronghorn antelope ranging freely, some crossing from nearby Yellowstone Park. But the real stars of the Flying D Ranch are his thousands of bison, the American beast once hunted to the edge of extinction.

Turner’s bison don’t need much human intervention to thrive. They breed naturally in the early summer, when the grass is at its most nutritious, and they birth their calves in the fields. The bison can withstand temperature fluctuations and snowfall. The animals are vaccinated for common diseases, but routine antibiotics and synthetic growth hormones aren’t used. When one of the animals dies—on the Flying D Ranch, about 2 percent to 3 percent of the herd perishes each year—the carcass is simply left for scavengers.