The Montana Supreme Court has ruled that bison can roam outside the park boundaries for winter and early spring forage without being shot.

In 2008, more than 1,400 bison – about one-third of the current size of Yellowstone’s bison population – were captured and slaughtered by government agencies while leaving Yellowstone in search of food.
The Montana Supreme Court affirmed the decision of a lower court this week, allowing wild bison room to roam outside the northern boundary of Yellowstone National Park.