For some animals, even small bits of sleep can add up and be useful (see graphic). Chinstrap penguins get their name ... Those in the middle close both eyes, but ducks at the end of the row ...

Penguins in Antarctica have evolved an unusual sleeping strategy to manage the constant demands of parenting. For the first time, scientists have measured the sleeping behaviour of adult chinstrap ...

The first coin in the 2020 50-penny coin series on behalf of South Georgia and South Sandwich Islands features the chinstrap penguin. Two versions were issued, with a copper-nickel Diamond Finish ...