. Bulletin of the British Ornithologists' Club. 1956 145 BULLETIN OF THE BRITISH ORNITHOLOGISTS' CLUB 11 Volume 76 Number 9 Published: 3rd December, 1956 ^\*n. The five hundred and fifty-first meeting was held at the Rembrandt Hotel, South Kensington, on Tuesday, 20th November, 1956, following a dinner at Chairman: Dr. James M. Harrison. Members, 26; Guests, 2; Guest of the Club, Dr. A. McDiarmid; Total, 29. Dr. A. McDiarmid, , of the Agricultural Research Council Field Station at Compton, Berkshire, gave a most interesting lecture on "Some Diseases of Free-living Wi


. Bulletin of the British Ornithologists' Club. 1956 145 BULLETIN OF THE BRITISH ORNITHOLOGISTS' CLUB 11 Volume 76 Number 9 Published: 3rd December, 1956 ^\*n. The five hundred and fifty-first meeting was held at the Rembrandt Hotel, South Kensington, on Tuesday, 20th November, 1956, following a dinner at Chairman: Dr. James M. Harrison. Members, 26; Guests, 2; Guest of the Club, Dr. A. McDiarmid; Total, 29. Dr. A. McDiarmid, , of the Agricultural Research Council Field Station at Compton, Berkshire, gave a most interesting lecture on "Some Diseases of Free-living Wild Birds,'' illustrated by lantern slides. His talk gave rise to a wide discussion in which Sir Landsborough Thomson, Sir Philip Manson-Bahr, Mr. John Beer, Mr. J. D. Macdonald, Dr. JefTery Harrison and the Chairman took part. Some Diseases of Free-living Wild Birds in Britain by Dr. A. McDiarmid The general attitude towards disease in free-living wild birds and mammals has altered greatly within the last twenty years. Originally it was thought that wild species were relatively free from infections, a state of affairs which could well be envied by a very unhealthy human popula- tion. This view has now been shown to be wrong; bird populations suffer from epidemics in much the same way as various other populations do and they can contract a variety of infections varying greatly in severity accord- ing to the causal agent. In certain countries, notably the , much attention has been paid to this matter and it is perhaps unfortunate that Britain has lagged far behind in this particular field. Other countries even have research institutes devoted entirely to this subject, but so far our Nature Conservancy has shown little interest in diseases of wild animals apart from myxomatosis in rabbits and then, only from an ecological viewpoint. In this country, there is no-one employed whole time on a study of the problem of disease in wild life with perhaps one exception at the


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