Yellowstone aims to control bison

A bison digs under the snow to graze inside Yellowstone National Park, Mont., in this undated photograph provided by the National Park Service. (Associated Press)
A bison digs under the snow to graze inside Yellowstone National Park, Mont., in this undated photograph provided by the National Park Service. (Associated Press)

Capture, slaughter could begin soon

BILLINGS – Yellowstone National Park administrators plan to capture and ship to slaughter potentially hundreds of wild bison if they migrate into Montana this winter in a bid to reduce disease and control the population of the animals.

The captures could begin as soon as mid-February, park officials said.

The effort comes as Montana is proposing to let bison roam more freely in the 70,000-acre Gardiner Basin north of the park despite resistance from local officials and some cattle ranchers.

Although the moves by the state and park appear contradictory, officials say keeping bison numbers under control is key to increasing public tolerance for the animals.

A mild winter so far has slowed the bison migration. That could scuttle the slaughter plans if conditions persist.

But about 570 bison are close enough to Yellowstone’s northern boundary that a significant winter storm could trigger them to move toward the Montana line, park and state officials said.

“We would still estimate 300 to 500 animals to be at the north boundary before the end of winter,” Yellowstone bison biologist Rick Wallen said.

The slaughter would target female animals that test positive for exposure to the livestock disease brucellosis. About 50 bison would be diverted to an animal contraception research program.

The park’s goal is to remove up to 330 bison from the population this winter to work toward a goal population of about 3,000 of the animals. The most recent population count tallied 3,720 bison.

Bison advocates criticized the slaughter plan when it was unveiled late last year. They want bison – North America’s largest animals – to have unfettered access to their historic winter grazing grounds at lower elevations in Montana.

The slaughter proposal also met with a tepid reception from Montana Gov. Brian Schweitzer. The Democrat has been sparring with the park’s parent agency, the Department of Interior, over a wide range of wildlife management issues and in December issued an executive order prohibiting any wildlife shipments by Interior without prior state approval.

A similar order last winter blocked bison slaughter shipments just days before they were slated to begin.

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Rich Landers

Rich Landers

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