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Some radar measurements of the alitiude of bird flight

01 January 1975 Comments Main paper ...

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...

News and comment

01 October 1965 Comments News and comment Ainsdale Sand Dunes National Nature Reserve.--The Nature Conservancy have purchased 1,216 acres of sand dunes between Ainsdale and Formby on the Lanca shire coast and the area has now been statutorily declared as the Ainsdale Sand Dunes National Nature Re...

Letters

01 October 1965 Comments Letters T h e w i n g pattern of the female Great Bustard Sirs,---In his recent article on 'Flight patterns of the European bus tards' (Brit. Birds, 58: 43-47), Philip J. Stead wrote with reference to the Great Bustard Otis tarda: 'The wing patterns of both sexes...

Notes

01 October 1965 Comments Notes Turnstone feeding on dead sheep.--On ist March 1964,8 day of heavy mist, we were walking along the shore at Steart Point, Somer set, when we came across the carcase of a sheep. A Carrion Crow Corvus corone and two Great Black-backed Gulls Larus marinttsfl...

Studies of less familiar birds: 136. Red-breasted Flycatcher

01 October 1965 Comments Main paper central Europe through Russia and right across Siberia and northern Mongolia to Anadyr, Kamchatka and probably Sakhalin Island, with isolated populations in the Caucasus and northern Iran, and in the western Himalayas (Dementiev.and Gladkov 1954, Vaurie 1...

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Some radar measurements of the alitiude of bird flight

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

News and comment

Letters

Notes

Studies of less familiar birds: 136. Red-breasted Flycatcher

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