The BBC's award-winning entry for the Italia Prize (Documentary Category)

The familiar cries of the gulls along our coastline are only a small part of the language of these birds. During the breeding season especially, they use a number of other sounds as well as postures to communicate with each other. The meaning and use of all these are examined in this remarkable study of life in a colony of Lesser Black-backed Gulls.
Introduced and photographed by Professor Niko Tinbergen
(from BBC South and West)
(Colour)