(HELENA, Mont) The Montana Supreme Court this week upheld the “Adaptive Management Adjustments” made to the Interagency Bison Management Plan in 2011. Those adjustments provide that Yellowstone bison may roam farther into the Gardiner Basin north of the park. The Supreme Court ruling was based on a procedural ruling of the appeal. As such, the ruling upholds a 2012 decision by state agencies allowing the bison seasonal access to winter range north of the park through May 1st each year. Bison are the only native wildlife species still being confined within the political boundaries of Yellowstone National Park for any part of the year. In past years, those bison wandering out of the park in search of food have been captured and sent to slaughter.