Follow the perilous parenthood of two species — white gyrfalcons and Arctic wolves — on Canada’s remote Ellesmere Island.

On Canada's remote Ellesmere Island, where June is spring, July is summer and August is already autumn, the race is on for two remarkable species to raise their families. The white gyrfalcon is enormous, the largest and most powerful falcon in the world. Yet last summer, the nesting falcon pair on the island failed to raise any young. The rare Arctic wolves rely on every member of the pack to chase and bring down the prey that keep them alive. Last year was good for them and they raised three cubs. But for the wolves and the falcons, as well for as the snowy owls, musk oxen, lemmings, Arctic foxes and hares who share this fragile ecosystem with them, fortunes are always precarious.