You are here:   Home » Fish & Wildlife » Species Conservation & Management » Bison » Interagency Bison Management Plan

Interagency Bison Management Plan

The National Park Service, the U.S. Forest Service, USDA Animal and Plant Health Inspection Service, the Montana Department of Livestock, and FWP developed the Intergency Bison Management Plan, which was adopted in 2000, after 10 years of negotiations. More than 67,000 public comments were received and considered.

Updating the Interagency Bison Management Plan

The State of Montana and National Park Service (NPS) are jointly preparing a Yellowstone-area Bison Management Plan and Environmental Impact Statement (plan/EIS). The purpose of the plan/EIS is to conserve a wild and migratory population of Yellowstone-area bison, while minimizing the risk of brucellosis transmission between these wild bison and livestock to the extent practicable. This planning process will result in a new, long-term decision about how to manage bison in Yellowstone National Park and on adjacent lands outside of the park in Montana. Learn more

Opportunity for Public Comment

The comment period is March 16, 2015 - June 15, 2015. Public scoping meetings will be held in Bozeman, Gardiner, and West Yellowstone, Montana. For details about these events, visit the National Park Service Planning, Environment & Public Comment (NPS PEPC)

Public comments will be accepted at the public scoping meetings and via the following methods:


Comment online at NPS Planning, Environment & Public Comment

Written, on Paper

Mail or hand-deliver written comments to:

  • Yellowstone National Park
  • Yellowstone Bison Management Plan EIS
  • PO Box 168
  • Yellowstone National Park, WY 82190


The comment deadline is June 15, 2015.

The plan

The Interagency Bison Plan seeks to: (1) reduce the risk of brucellosis transmission from bison to cattle by keeping the animals away from each other; (2) maintain a wild, free-ranging bison population; and (3) protect the economic interest and viability of Montana's livestock industry.

One of the most important aspects of the plan is not that bison can be hunted in Montana, but that a limited number of bison can now inhabit more than 460,000 areas, or about 720 square miles of southwestern Montana. It's a step toward allowing Montana to manage bison like other wildlife. The plan allows bison to inhabit certain areas in southwestern Montana, while in other areas, officials haze bison back into YNP. If hazing doesn't work, bison may be captured and tested for brucellosis. Depending on the overall population, brucelloisis-free bison can be released. Bison that test positive for brucellosis, however, are sent to slaughter with the meat and hides donated to Montana Indian tribes and food banks.

Researchers are exploring the possibility of expanding brucellosis-free bison beyond park boundaries through a quarantine program. FWP is working with the USDA Animal and Plant Health Inspection Service to find and isolate disease-free bison that leave YNP. These disease-free animals and their young could then become the stock for restoration projects in other parts of the bison's historic range.