It's a bad day to be a bison in Yellowstone. The Idaho Press Tribune is reporting that the government may kill or remove up to 900 bison as an effort in population control.

Park officials on Tuesday released details of plans for at least 600 to 900 bison to be killed by hunters or captured and sent to slaughter. That potentially would be the most in one winter since 2008, and it represents more than 18 percent of the current population of about 4,900 animals.