THE report of the British Section of the International Committee for Bird Preservation (The Secretary, c/o British Museum (Natural History), Cromwell Road, London, S.W.7) is a record of much good Work. For some years past naturalists and others have been perturbed by the decline in the wildfowl population of the world, and, among other things, the report contains an account of the Committee‘s work in investigating the situation as it affects the wildfowl of Europe. Among the activities are the ringing of duck to trace their migration routes. A duck decoy at Orielton is being used for this purpose, and ringing on a lesser scale is being carried out at other decoys in Great Britain. In 1947, the headquarters of the Committee, previously in Brussels, were transferred to London, and the British Museum (Natural History) is now the centre of the organisation, which has thirty-four national sections from all five continents.