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Recent reports - May

01 August 1973 Comments News and comment These are largely unchecked reports, not authenticated records May was a month of unsettled weather, generally warm in most parts of Britain but with above average rainfall in some places. The presence during the first week of an area of high pressure ...

Notes

01 August 1973 Comments Notes Death of Great Crested Grebe in unusual circumstances On 26th June 1971, at Rostherne Mere National Nature Reserve, Cheshire, I observed a pair of Great Crested Grebes Podiceps cristatus in what appeared to be normal courtship display. One part...

Predation of migrant birds by gulls

01 August 1973 Comments Main paper Gulls Larus have a very diverse feeding ecology, but vertebrates form a significant part of the diet of some species (Tinbergen 1953). They are well known for their depredations on the eggs and young of colonial seabirds; they also attack and kill inju...

Report on rare birds in Great Britain in 1972

01 August 1973 Comments Main paper This is the fifteenth annual report of the Rarities Committee. The composition of the committee is now D. I. M. Wallace (chairman), F. R. Smith (honorary secretary), D. G. Bell, A. R. M. Blake, P. E. Davis, R. H. Dennis, P.J. Grant, R.J.Johns, R. A. Ri...

Current developments in the work of the Rarities Committee

01 August 1973 Comments Main paper During 1972, and more particularly at its annual meeting in March 1973, the Rarities Committee has reviewed many points of policy and practice. Conscious of the criticism that it periodically attracts, it remains anxious to conduct its work as openly a...

Recent reports and News

01 August 1959 Comments News and comment The items here are largely unchecked reports, and must not be regarded as authenticated records. They are selected, on the present writers' judgment alone, from sources generally found to be reliable. Observers' names are usually omitted for reasons of sp...

Notes

01 August 1959 Comments Notes Display flight of Bitterns.--On 18th May 1959, at midday, I saw three Bitterns (Botaurus stellaris) rise from a re,ed-bed near Walberswick, Suffolk, and mount in a fresh N . E . breeze to a height which I estimated to be 600 or 700 feet. Not much wingflap...

Watching migration by radar

01 August 1959 Comments Main paper So FAR AS I know, the first time that radar echoes were definitely identified as coming from birds was in the spring of 1940, when an experimental equipment on a wavelength of 50 cm. at Christchurch, Hampshire, detected gulls (Larus spp.) (Shire, 1958). U...

The spread of the Eider in Great Britain

01 August 1959 Comments Main paper range of the Eider (Somateria mollissima) in the southern half of Great Britain since the Second W o r l d W a r , and also to describe the increasing number of birds which are recorded in summer along the same parts of the coast even though they are far ...

Editorial: Records of rare birds

01 August 1959 Comments Editorials DURING the past year or more there has been a growing realization that a large number of birds formerly thought to be rarities are reaching the British Isles regularly, and even in some numbers. In some cases a change of habit or expansion of breeding dis...

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Recent reports - May

Notes

Predation of migrant birds by gulls

Report on rare birds in Great Britain in 1972

Current developments in the work of the Rarities Committee

Recent reports and News

Notes

Watching migration by radar

The spread of the Eider in Great Britain

Editorial: Records of rare birds

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