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Elk
Male elk during the fall rut. Large male elk are known as bulls. Male elk have large antlers which are shed each year. Males engage in competitive mating behaviors during the rut, including posturing, antler wrestling and bugling, a loud series of screams which is intended to establish dominance over other males and attract females. Mammoth Hot Springs, Yellowstone National Park, Wyoming, USA, Elk, Cervus canadensis. Copyright Phillip Colla, Oceanlight.com
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