BILLINGS, Mont. (AP) - A group of bison allowed to migrate north of Yellowstone National Park for the first time in decades has strayed from its new grazing grounds three times since its arrival this past week. Park officials said Friday they will continue to haze the animals back onto the Gallatin National Forest for now. It is uncertain what will happen if they continue to enter areas where they might encounter cattle.
Many bison carry brucellosis, a disease that can infect cattle and cause the animals to prematurely abort their young. The 25 bison on the Gallatin are part of a pilot program years in the making and have tested negative for the disease. Another 63 bison that tried to leave the park are being held in a capture facility. Those animals could be returned to the park or possibly sent to slaughter.