For some animals, even small bits of sleep can add up and be useful (see graphic). Chinstrap penguins get their name for the thin black band of feathers that extends from ear to ear. They may be ...

If penguins become extinct, the food chain will be badly affected. Animals which eat penguins, like some whales or seals, would also suffer. Without penguins, they wouldn't have anything to eat.

Once caught and placed with care into a cardboard box, the small feathered animals are sent to a ... successfully," she told AFP. When penguins do not eat enough, preferably sardines or anchovies ...