Amid the daytime bustle of Regent's Park lies a moonlit world of night creatures where fruit bats and Tasmanian devils live side by side with owl monkeys, kiwis and echidnas -inhabitants of the Nocturnal House at London Zoo.
Brian Bertram takes
Derek Jones on a radio nature trail through this shadowed world to discover some of London's more unusual nightlife. Producer MELINDA BARKER BBC Bristol
long wave only