Stem-cell 'symphony' creates patterns in feathers

VIBRANT plumage inspired Darwin's thinking on sexual selection as well as many a poem and painting.

http://www.newscientist.com/article/mg21829155.300-stemcell-symphony-creates-patterns-in-feathers.html?cmpid=RSS%7CNSNS%7C2012-GLOBAL%7Cmagcontents