Emperor Penguin - Breeding Cont.

During the antarctic winter the male Emperor Penguin is left to mind his egg after the female has laid it. Bear in mind that this is literally the coldest place on Earth at this time. They have to stand in a big huddle (to keep heat in) and incubate the egg for 2 months while it matures to be hatched.
After the winter is over the female returns from her travels and will feed her chick using predigested fish. She will essentially puke into her new born chicks mouth to keep it alive. Interesting fact: If the female doesn't return in time the male is able to excrete a milk from it's oesophagus to feed the baby!
When the female returns the male leaves to eat and after this they take turns fishing and minding the baby.
No one really knows where the penguins migrate to during breeding other than they go North, except that they usually stay within the range of the permanent ice. However penguins tracked with satellite transmitters have been found as far up as the, South Shetland Islands, Tierra del Fuego, the Falklands, South Sandwich Islands, Kerguelen Island, Heard Island, and New Zealand.
The mind boggles.
References: http://www.penguinworld.com/types/emperor.html