Photo by kiliiiyuyan | A willow ptarmigan runs under a female caribou during the caribou's May migration across the wetlands of Alaska's Teshekpuk Lake. Ptarmigan have been known to maintain a close relationship with caribou, taking advantage of the safety of the herd and adding an extra set of eyes for predators. Follow me kiliiiyuyan, for more from the Arctic and beyond. #arctic #caribou #ptarmigan