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Yellowstone Releases Bison from Stephens Creek

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Date: January 27, 2011
Contact: Al Nash, 307-344-2015

National Park Service
U.S. Department of the Interior

Yellowstone National Park
P.O. Box 168
Yellowstone National Park, WY 82190
January 27, 2011 11-008
Al Nash (307) 344-2015

Yellowstone Releases Bison From Stephens Creek

A group of 62 bison that had been temporarily held in the Stephens Creek capture facility inside the northern boundary of Yellowstone National Park was released Thursday afternoon and moved south further into the park.

The bison were among 88 captured in the facility northwest of Gardiner, Montana in early January. Most had been captured in order to select an experimental group of 25 seronegative bison which was released at the north end of the Gardiner Basin on January 19. During the selection process, care was taken to ensure young bison calves were not separated from their mothers.

Forty of the bison released back into the park Thursday had been tested for exposure to brucellosis. Of that group of 40, 19 tested positive and 21 tested negative for exposure to brucellosis. Twenty-two bison that had been held at Stephens Creek were not tested for exposure to brucellosis. One bison cow held in Stephens Creek which was found injured was euthanized on January 12.

With Thursday’s release, the Stephens Creek facility is free of bison.

Snowpack levels along Yellowstone’s northern range are about 30-percent above average for this time of year. Like elk and other ungulates, bison migrate during the winter to lower elevations looking for areas with less snow, where it may be easier to find food.

Park managers believe that if snow continues to accumulate at the current rate, some or all of the bison released Thursday, as well as additional groups of bison that migrate into the Gardiner Basin, could move across the northern boundary of Yellowstone onto public and private land in Montana.

Under the Interagency Bison Management Plan (IBMP), the National Park Service is responsible for keeping bison from leaving the park boundary at Reese Creek until the State of Montana decides whether the Zone 2 experiment is deemed successful enough to allow for increased tolerance of bison north of the park and west of the Yellowstone River in the Gardiner Basin. There are no restrictions or limits on the number of bison that migrate to the Eagle Creek area north of Gardiner, Montana.

Under the IBMP, when hazing bison back into the park becomes unsafe or ineffective, bison can be captured at the Stephens Creek capture facility. Bison that are not being held for spring release back into the park could be shipped to slaughter. If that occurs, the meat from the slaughtered bison is distributed to regional food banks and tribal groups. No bison have been shipped to slaughter during the winter of 2010-2011.

Yellowstone National Park continues to work with the IBMP partners to seek places where bison from the northern and central herds may be relocated outside of the park when captured. 

Since 2000, Yellowstone has cooperated with its state, federal, and tribal partners under the Interagency Bison Management Plan (IBMP) to conserve a viable, wild bison population while protecting Montana’s brucellosis-free status.

The cooperating agencies operating under the IBMP are the National Park Service, the U.S. Forest Service, the Animal and Plant Health Inspection Service, the Montana Department of Livestock, the Montana Department of Fish, Wildlife and Parks, the InterTribal Buffalo Council, the Confederated Salish Kootenai Tribes, and the Nez Perce Tribe. More information on the IBMP can be found at http://ibmp.info/

www.nps.gov/yell -

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