Chinstrap penguins (Pygoscelis antarcticus) nod off more than 10,000 times a day for an average of 4 seconds at a time, researchers have found. The short snoozes, which add up to more than 11 hours of daily sleep, seem to be enough to fulfil at least some of the restorative functions of sleep, according to a study published today in Science1.
Source: nature.com