When the temperatures at Bosque del Apache drop below freezing, the water in the Train Ponds freezes and the legs of the Sandhill Cranes, sleeping in the pond, become encased in ice. When they awake and begin to move about, bracelets of ice sometimes remain, encircling their legs. This crane is trying to dislodge the ice bracelet so that he can take off more easily. It’s looks sort of like the crane is dancing on ice.
