Emperor Penguins carry built-in nests

The male penguin puts the egg on his feet, which are richly supplied with blood vessels, and drapes over it a brood pouch that hangs down from his abdomen. Mother does not forget father and baby. Soon after the egg hatches, the mother returns with a stomach full of food that she regurgitates for them. Then the male goes off to fish while mother puts baby on her feet and drapes her brood pouch over it.