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![Bison Males Head Butting in Yellowstone National Park](http://d38zjy0x98992m.cloudfront.net/2b90a54d-4929-46bb-a8c8-b368d8c3cb18/Yellowstone_NP_May-497_xgaplus.jpg)
Bison Males Head Butting in Yellowstone National Park
Buffalo, Bison bison, aggressively head-butting in a strength contest along the Madison River in May in Yellowstone National Park, Wyoming, USA
Author: Lee H. Rentz
© Lee H. Rentz: All Rights Reserved
Photo size: 1.5 Mpixels (4.29 MB uncompressed) - 1000x1500 pixels (3.3x5 in / 8.5x12.7 cm at 300 ppi)
Published in: YELLOWSTONE NATIONAL PARK
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