var items = new Array (new ImageMetaData('Researchers placed colored marks on magpies, visible here just below the beak, then watched how the birds used a mirror to identify and direct behavior toward the marks.','http://msnbcmedia.msn.com/i/msnbc/Components/Photo/_new/080819-science-magpie-vlarge-11a.jpg','1:53 p.m. ET, 8/19/08','Prior et al. / PLOS Biology','Prior et al. / PLOS Biology',26293679));