FILE - In this Jan. 19, 2011, file photo bison from Yellowstone National Park are herded down the Yellowstone River valley toward Cutler Meadow in the Gallatin National Forest, in Mont. Yellowstone National Park officials said in a 2018 briefing paper that they were ordered by then, Secretary of the Interior Ryan Zinke to manage the park's bison "more actively like cattle on a ranch." (AP Photo/Matthew Brown, File)
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