Two weeks after the state of Montana decided Yellowstone bison could roam year-round in the area outside West Yellowstone, an interagency group decided almost 1,000 bison needed to be killed this winter.

Members of the Interagency Bison Management Plan decided once again that 600 to 900 bison needed to be eliminated from the herds of Yellowstone National Park to reduce the population below the 4,900 estimated to reside in the park.