Swifts in sea-breeze fronts

01 June 1967 Comments Main paper G L I D E R P I L O T S often find themselves sharing rising currents of air with birds, sometimes to considerable heights. A source of upcurrents which has been found and used more extensively in recent years is the rising air at the sea-breeze front. Tw...
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Reviews

01 June 1967 Comments Reviews Animal Navigation. By R. M. Lockley. Pan Books, London, 1967. 205 pages; 25 text-figures. 6s. Ornithologists are apt to think of animal navigation as being about the spectacular homing journeys of birds. In this book the author interprets the term very br...
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Notes

01 June 1967 Comments Notes Barn Owl perching on man.--On 14th December 1966, at 3 p.m., I was digging a ditch on the Royal Society for the Protection of Birds' reserve at Leighton Moss, Lancashire, when I saw a Barn Owl Tjto alba hunting along the hedgerow. It soon dropped on to a ...
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News and comment

01 June 1967 Comments News and comment launches major appeal fund.--With an eye set firmly on a target of £100,000, the Royal Society for the Protection of Birds has now launched what must surely be the most ambitious appeal fund ever made by- a voluntary natural history body in this co...
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Letters

01 June 1967 Comments Letters Little Ringed Plovers in Britain during 1963-67 Sirs,--My last report on the increase and spread of the Litde Ringed Plover Cbaradrius dubius in Britain covered the years 1960-62 (Brit. Birds, 57: 191-198), although some information up to 1965 has been gi...
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Request for information

01 February 1962 Comments Editorials Cold weather migrations.--The British Trust for Ornithology and "British Birds are analysing the unusually impressive cold -weather migrations of the week following 28th December 1961. All records of movements, arrivals and departures at this period are o...
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Letters

01 February 1962 Comments Letters What is a British bird ? Sirs,--The recent note and subsequent correspondence on the occurrence of a White-throated Sparrow (Zonotrichia albkollis) in Hampshire {Brit. Birds, 54: 366-367 and 439-440) prompts once more the question: what is a British bird?...
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Reviews

01 February 1962 Comments Reviews D o w n the L o n g Wind (A Study of Bird Migration). By Garth Christian. N e w n e s , London, 1961. 240 pages; 31 plates; 23 maps. 21s. Few branches of ornithology have made more rapid strides than the study of migration and every year now sees the publ...
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