Aldabra
A hitherto unvisited corner of the Indian Ocean has this year been opened up to tourists for the first time: Aldabra is now visited by more people in the course of one month than in the last 100 years. But what will be the results of this invasion? Seven of the 12 rarest land-birds on earth are to be found here - can they survive?
TONY BEAMISH reports, with recordings made during his visit - including the voice of a bird never previously recorded. Introduced by DEREK JONES Produced by DILYS BREESE (from Bristol)
(Shortened version: Wed, 9.5am)