BILLINGS, Mont. – Yellowstone National Park ended shipments of wild bison to slaughter for the winter on Friday after almost 600 were removed in an effort to shrink the number of animals that cross into Montana during their annual winter migration.
Park officials said 258 bison were shipped out for slaughter by contract haulers and American Indian tribes that agreed to take the animals for their meat. Hunters killed at least 264 bison through Friday, and 60 more were captured and placed in a U.S. Department of Agriculture animal contraception experiment.
The removals were part of an ongoing effort to reduce Yellowstone’s herds to about 3,000 animals under an agreement with Montana officials.
Ranchers outside the park have a low tolerance for bison because of concerns the animals could spread disease and edge out cattle for grass. They’ve resisted efforts to allow bison to migrate into Montana and roam freely on adjacent public and private lands.
Wildlife advocates contend the capture and slaughter program is unnecessary, citing research that says Yellowstone could support far more bison than the 4,600 counted last summer.
Yellowstone’s chief scientist, Dave Hallac, said the slaughter shipments and bison hunt will offset the population growth from bison calves born in the spring. As more die naturally this winter there should be at least a modest overall population decline, he said.
Tribes’ participation in the slaughter marked a turnaround from prior years, when American Indians joined with opponents to protest the practice.
The change drew sharp criticism from some wildlife advocates. On Friday, the activist group Buffalo Field Campaign issued a statement accusing the tribes of “providing cover to the shameful actions of the livestock industry and the government agencies.”
Jim Stone with the InterTribal Buffalo Council – which signed an agreement with the park in 2012 to take bison for slaughter – said the council is committed to the animals’ conservation. But Stone said the council’s leaders decided the only way to alter current practices was from the inside.
“You do it knowing it’s a horrible thing to do,” he said. “The only way you can change what’s going on is if you know what’s going on and can control what’s going on.”
Hallac said 500 to 1,000 bison remain near the park boundary, and Friday’s announcement does not mean additional bison won’t be captured this winter.