image: This is the Soay sheep (Ovis aries) on St. Kilda Archipelago. This image accompanied the paper "The Dynamics of Phenotypic Change and the Shrinking Sheep of St. Kilda," by A. Ozgul et. al appearing in the July 3, 2009, issue of Science. view more
Credit: Photo by A. Ozgul. Image copyright <i>Science</I>/AAAS