November 3, 2014

Bugling Elk, Yellowstone

Photograph by Arturo de Frias, Alamy

During the late summer breeding season, the bugling of bull elk echoes through Yellowstone National Park. Males bellow to attract females and to intimidate the competition. Anywhere from 100,000 to 200,000 elk spend the summer inside the park; in the winter the number drops to around 5,000.

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