A new analysis of old data suggests that the endangered erect-crested penguin's bizarre nesting habits -- rejecting the first egg they lay -- is because they can't feed two chicks, and the second, ...

Most parents of little ones function with a sleep deficit — but some penguins have figured out a way to catch more Zzzs. Nesting chinstrap penguins take more than 10,000 mini naps per day, according ...

Anyone who has ever been deeply sleep-deprived is probably familiar with microsleep. Microsleep occurs when you fall asleep ...

Nov 30 (Reuters) - Along the rocky and ice-free Antarctic coastline, chinstrap penguins by the millions form bustling breeding colonies - chaotic, noisy and, yes, smelly - every year, laying eggs in ...

A tiny chick barely peeks out of the pouch between its parent's legs. "As soon as we started filming, we started to see things that had never been filmed before," wildlife cinematographer and National ...

Two romantically involved male penguins stole an entire nest from a female penguin couple at a zoo in the Netherlands. On Tuesday, animal caretakers at the DierenPark, in the city of Amersfoort, just ...