Dietmar Nil has always been interested in nature. He bought his first camera when 15 years old and soon he was concentrating on capturing the behaviour of birds of prey and mammals. Twenty years later he turned his lens on bats, documenting all European species and getting images of previously unphotographed species. In 2008 he took on a new challenge and bought a film camera to film bats. He found a producer and the film was broadcast on German TV channel WDR in 2012, winning several industury prizes.
His most recent films for television were about the Peregrine falcon and the Snowy owl.