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13th Annual Smithsonian Magazine Photo Contest Natural World
The Capercaillie's Kingdom

The Capercaillie usually is timid and shy, but often, during the mating season, they lose all shyness and they become aggressive and swaggering. The excessive increase of testosterone makes them aggressive even toward men, as the case of this grouse.

Photo Detail
Date Taken: 06.2014
Date Uploaded: 11.2015
Photo Location: Moena (TN), Italy
Camera: Canon EOS 500D
Copyright: © Ivan Mazzon