Most penguins build their nests on rocks or in the snow. Magellanic penguins do something different - they dig burrows in the soft ground or under bushes. Each pair has its own burrow and comes back to the exact same one every year, even after months apart at sea.
Mum and dad penguin both look after the chicks. They take turns - one stays at the burrow while the other walks (or 'porpoises' - small jumps through the water) to the sea to catch fish. Then they swap. Penguins can recognise their own partner by the sound of their call, even in a colony of half a million other penguins.
Once their chicks have grown, the whole colony heads north for the winter, swimming up to 5,000 kilometres along the coast of South America to warmer waters. Then they swim all the way back to the exact same beach next spring.
Magellanic penguins are named after a sailor called Magellan who saw them about 500 years ago while sailing past Patagonia. The penguins, of course, had been there a lot longer than him - they just hadn't bothered with a name.