Reviews

01 April 1966
Comments Reviews Bird Migration: the Biology and Physics of Orientation Behaviour. By Donald R. Griffin. Science Study Series, N o . 32. Heinemann, London, 1965. x v + 1 8 0 pages; 27 text-figures. 12s. 6d. (paperback 8s. 6d.). The author's interests are clearly better re...
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Notes

01 April 1966
Comments Notes Weasel killing Kestrel.--I was interested in Mrs. Sybil Selwyn's observation of a Kestrel Falco tinnunculus which caught a Weasel Mustek nivalis and carried it up into the air, but then let it go {Brit. Birds, 59: 39). On Z7th December 1930 I was watching...
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News and comment

01 April 1966
Comments News and comment An ornithological atlas ?---The possibilities of undertaking an ornithological atlas of the British Isles, along the lines of the Botanical Society of the British Isles's Atlas of the British Flora, are at present being explored by the British Trust for O...
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Letters

01 April 1966
Comments Letters The spread of potato-eating i n Whooper Swans Sirs,--A tendency for flocks of up to 40 Whooper Swans Cygnus cygnus to feed inland is well attested in early European literature; and in Scotland these swans, like geese, occasionally fly some miles from wate...
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The Sexual Displays of Swallows

01 May 1941
Comments Main paper THE quantitative aspects of the reproduction of the Swallow (Hirundo r. rustica) have been intensively studied in the enquiries of the British Trust for Ornithology (antea, Vol. XXIX, pp. 3-21, Vol. XXX, pp. 98-116) and in many other surveys; but there re...
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Nest-Sanitation

01 May 1941
Comments Main paper Faeces carried; no data for first few days ; at a late stage young defaecate from the opening ; if deposited on " doorstep " they are carried; if they fall clear they are left, even if conspicuous (B.H.R., R.G.A., A.H.M.C). [Voided at entrance of nest and...
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Notes

01 May 1941
Comments Notes WHEN reading Mr. D. Lack's article on the Chaffinch (antea, p. 216), I was particularly interested in the paragraph on " female song." Just over a year ago (early in March, 1940) I heard at Brent Park, Hendon, a bird singing, which I did not recognize at...
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