Of all the world's birds, perhaps none are more mystical than cranes.
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.
Their grass and wetland habitats are devastated all over the world. The International Crane Foundation, based in Wisconsin, has been studying and advocating for the birds for 40 years. George Archibald founded it with another young ornithologist on a family farm near Baraboo.