November 17, 2006—They don't make an arduous 50-mile (80-kilometer) march like their "movie star" neighbors. But that doesn't mean Adélie penguins have it easy when to comes to breeding.

Like emperor penguins, Adélies live in the harsh cold of the Antarctic continent. Instead of heading inland to lay their eggs, the smaller seabirds build their nests along the rocky coastline.

Watch adult penguins face off over the best mates and nest sites, and witness the family squabbles that often take place between devoted parents and impatient chicks.