Study: Yellowstone bison mow, fertilize their own grass
By Associated Press
Published: November 21, 2019, 4:30pm
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MISSOULA, Mont. (AP) — A study of grazing in Yellowstone National Park found that bison essentially mow and fertilize their own food. This allows them to graze in one area for two to three months during the spring and summer while other hoofed mammals must keep migrating to higher elevations to follow new plant growth.
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