Here you will find a general description of the breeding behavior of Crested Penguins by Brandon and Chip Crested Penguins build their nests in rocks or sometimes dig out burrows. Their nests are lined with whatever soft vegetation is available.
Differences are between species.
The female lays two eggs the second one is almost always bigger than the first one. Sometimes the first one is abandoned. Parents almost always share the chore of raising the their children. After the first few days after the eggs have hatched, one of the adult penguins looks for food while the other penguin watches over the nest. The lager chick always eats first and the smaller chick eats the leftovers.