Every autumn, the village of Jianda in Shigatse, southwest China's Xizang Autonomous Region welcomes some distinguished guests – a thousand black-necked cranes dressed in their elegant black-and-white "tuxedos." Jianda is their exclusive wintering spot, where they are looked after by 75-year-old Tenzin. In this model of human-crane cohabitation, the cranes stand guard as the farmers till their fields and dance as the livestock graze. And in the golden glow of sunset, the village's chimneys puff out smoke to a chorus of crane calls, in a celebration of a timeless pact between humans and birds.