Criminal penguin captured on film

http://www.bbc.co.uk/nature/15305502

The footage they captured shows a male penguin stealing stones from its neighbour's nest.

The birds build their stone nests to elevate and protect their eggs from run-off when the Antarctic ice melts.

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.