Introduced by Peter Scott.

with Bernard and Sally Stonehouse.

Ascension Island is situated in the Atlantic Ocean just south of the Equator. Two years ago, Bernard Stonehouse with his wife Sally led a British Ornithologists' Union Centenary Expedition to the island to study the breeding cycle of the wideawake tern which, unlike the other birds in the area, breeds every nine months. They discuss their findings with Peter Scott.