A "criminal" stone-stealing Adelie penguin has been captured on camera by a BBC film crew.
The team, filming for the documentary Frozen Planet, spent four months with the penguin colony on Ross Island, Antarctica.

The footage they captured shows a male penguin stealing stones from its neighbour's nest.
Males with the best nests are more likely to attract a mate, so, in a colony of half a million penguins, the best stones are highly prized.