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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 breeding behaviour of the Swift

01 June 1952 Comments Main paper ...

Notes

01 December 1944 Comments Notes I HAVE previously (antea, Vol. xxxiii, p. 265) given examples from the Robin (Erithacus rubecula) and the Blackcock (Lyrurus tetrix) of a male attempting to disturb the coition of another pair. Similar behaviour is characteristic of geese and swans, as n...

Notes

01 November 1944 Comments Notes ALTHOUGH Carrion-Crows (Corvus c. cowrie) and Rooks (Corvus f, frugilegws) have been recorded occasionally as nesting on electric pylons, it may be of interest to record that as a result of observations by Mr. A. E. Billett at Weston-super-Mare, Somerset...

Changes in Status among British breeding Birds

01 October 1944 Comments Main paper STONE-CURLEW (Burhinus ce. cedicnemus). In second half of 19th century became extinct in Cotswolds (Gloucestershire and N.W. Oxfordshire) and in E. Midlands (Leicestershire, Rutland, Nottinghamshire and Lincolnshire). Has decreased elsewhere (almost extin...

Changes in Status among British breeding Birds

01 August 1944 Comments Main paper IN view of the present interest in animal fluctuations, a survey has been "made of every bird breeding in the British Isles, to see what proportion of the species have increased, decreased or remained at about the same level during the last one, hundred y...

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Watching migration by radar

The breeding behaviour of the Swift

Notes

Notes

Changes in Status among British breeding Birds

Changes in Status among British breeding Birds

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