David Attenborough: The Early Years: Sir David Attenborough recalls moments from his early television career and discusses the stories behind them. Among the highlights are Sir David's first encounter with Born Free's Elsa the lioness, and being the first to film Indri lemurs using recordings of their calls to entice them out of hiding. Having recently completed the landmark natural history series Africa (2012), Sir David also talks about his very first trip to the continent in 1955 when filming 'Zoo Quest to West Africa'.