Photo of the Day 14 February 2008

Common Loons, Moose Lake, Wyoming, 1988
Photograph by Michael Quinton
Two common loons in checkered breeding plumage engage in a courtship ritual in Wyoming's Moose Lake. Loon pairs are generally monogamous and highly territorial, emitting their haunting yodels during the breeding season to ward off intruders and violently attacking any that come too close.