Just returned from seeing "The March of the Penguins" (French, 2005) after church ... not that they march after church but that we saw the movie after church.

The Emporer Penguin, about which the movie was made, are classified as nidicolous but there is no nest in which they might remain. The male carries the egg around on top of its feet, covered by a fleshy feathered flap, until birth. Thereafter the chick rides around on dad, and then mom, in the same place the egg was kept. No nest, as the adults simply clump together in a large group on the ice in the breeding "ground".