After laying, the mother's nutritional reserves are exhausted and she very carefully transfers the egg to the male, before immediately returning to the sea for two months to feed.[SUP]
[61][/SUP] The transfer of the egg can be awkward and difficult, and many couples drop the egg in the process. When this happens, the chick inside is quickly lost, as the egg cannot withstand the freezing temperatures on the icy ground. The male spends the winter
incubating the egg in his brood pouch, balancing it on the tops of his feet, for 64 consecutive days until hatching.[SUP]
[63][/SUP] The Emperor Penguin is the only species where this behaviour is observed; in all other penguin species both parents take shifts incubating.[SUP]
[67][/SUP] By the time the egg hatches, the male will have fasted for around 115 days since arriving at the colony.[SUP]
[63][/SUP] To survive the cold and winds of up to 200 km/h (120 mph), the males huddle together, taking turns in the middle of the huddle. They have also been observed with their backs to the wind to conserve body heat. In the four months of travel, courtship, and incubation, the male may lose as much as 20 kg (44 lb), from around 38 kg to just 18 kg (84 lb to 40 lb).[SUP]
[68][/SUP][SUP]
[69][/SUP]