In 1954, the BBC broadcast a new television programme in Britain. It was called Zoo Quest and it launched the career of a man who has since brought the natural world into millions of homes around the world, the broadcaster Sir David Attenborough. Louise Hidalgo has been listening back through the BBC archives to Sir David telling the story of the first natural history expedition for Zoo Quest, to Sierra Leone in West Africa.

Picture: David Attenborough, producer of the BBC wildlife documentary series Zoo Quest, and Jack Lester (right), curator of London Zoo's reptile house, planning their next expedition with the help of Gregory the parrot, March 1955 (Credit: William Vanderson/Fox Photos/Getty Images)