Protecting Argentina's parrot colony

You might think that 180,000 squawking, screeching parrots living in 35,000 nests along 12km (seven miles) of coastline would draw quite a lot of attention.

They make a lot of noise and, with their green backs and red and yellow bellies, are a spectacular sight as they swoop and circle above the cliffs looking out over the Atlantic Ocean.

British naturalist Charles Darwin found and wrote about them on his travels in the 1830s.

But not many Argentines are aware of the burrowing parrots (Cyanoliseus patagonus) which form the world's biggest parrot colony.