This is a rebroadcast of an interview that originally aired on March 16, 2016.
In 1990, when Cambridge scientists set out on an expedition in Ethiopia, they recovered the wing of an unknown species of bird. Over 20 years later, their mysterious discovery led Vernon R.L. Head, Chairman of BirdLife South Africa, to join a new expedition on their search for the Nechisar Nightjar. He tells the story of their quest in The Rarest Bird in the World: The Search for the Nechisar Nightjar.