观看免费视频 Yellowstone National Park: Bison

(175 MB) 添加日期13 May 2016 播放161次 动物 野生动物 Nature
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Yellowstone National Park: Bison

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Yellowstone preserves the most important bison herd in the United States. Learn more about the near extinction and recovery of these remarkable animals, how they make it through harsh winters, and what their survival says about our ability to share the landscape with another species.

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