American Bison | Winter in Lamar Valley

American Bison | Winter in Lamar Valley  Bison are year round grazers requiring water every day. They eat primarily grasses, but will also eat flowering plants, lichens, and woody plant leaves. In the winter, they sweep their heads from side to side to clear the snow.  To see the entire story with all seven images, go to American Bison | a 7 Image Story.