Heinz Sielmann is one of the world's leading wildlife film-makers. In the colourful Galapagos Islands he obtained outstanding material on the unique penguins, albatrosses, sea-lions, and giant tortoises. His expedition landed on 'an island of dragons' among thousands of marine iguanas and also managed to film the amazing behaviour of the wood-pecker finch, one of the few animals in the world to use a tool.
