From Asia to North America, these tall birds with haunting cries have been woven into paintings, literature and folk tales. But today, 10 of the world's 15 crane species are threatened, and some are on the brink of extinction. (NPR).
http://www.npr.org/2013/09/08/219764625/answering-the-cranes-call-40-years-of-preserving-grace
