Most people picture sleep as a single block of rest at night, maybe stretched a little longer on weekends. Penguins live by a different rhythm. Their idea of rest is broken into countless flickers of ...

WASHINGTON — It's a challenge for all new parents: Getting enough sleep while keeping a close eye on their newborns. For some penguins, it means thousands of mini-catnaps a day, researchers discovered ...

Penguins were everywhere. Colonies ranged up to 5,000 penguins of the chinstrap varieties. One colony had about 12,500 chinstraps, while the largest colony he saw had 600,000 King Penguins in South ...