Penguins do not hibernate during the Antarctic winter; instead, they take advantage of the cold weather to feed and to reproduce. With their layer of blubber, insulating fur and oily coats, penguins are highly adapted to living even in the coldest months of the year.
Similar to many bird species, some penguin species migrate to their original breeding ground to reproduce and raise their young. Emperor penguins breed annually during the Antarctic winter, living in an environment of half-light or darkness from June through August. Macaroni penguins, on the other hand, travel a long distance from their summer breeding ground and stay within the polar frontal zone to feed in the winter. Unlike emperor penguins, macaroni penguins do not stay together in one group; they disperse into separate groups when they migrate.