King penguins spend most of their life at sea. But at breeding time in December, half of the world's king penguins flock to the remote Crozet Islands in the Indian Ocean, halfway between Antarctica and South Africa.
Now, the birds face a new threat: climate change.
They only return to land to breed, and they are very picky about where they do so. It must be a dry place, without winter sea ice around the island, and it must have a smooth beach made of sand or pebbles. Also it must have plenty of fish and squid to eat.
But now, climate change is warming the seas, and this is changing the climate of the Crozet Islands. The islands could soon become unsuitable for the picky king penguins. This means they may soon have to find other, colder islands.
