Understanding sonograms

01 July 2000
Comments Main paper ABSTRACT Although sonograms are being used more and more to portray bird sounds, many people find them hard to understand. Once understood, however, they can be useful to the amateur as well as to the professional, so long as one does not try to read t...
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Reviews

01 September 1978
Comments Reviews Wildlife Sound Recording. By John B. Fisher. Pelham Books, London, 1977. 173 pages; 16 black-and-white photographs; 17 figures. £5-95 Many would-be sound recordists are discouraged by the thought that the subject is too technical. This book ex...
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Reviews

01 March 1971
Comments Reviews Wild Wings to the Northlands. By S. Bayliss Smith. Witherby, London, 1970. 208 pages; 24 black-and-white photographs. £1.50. Anyone might be forgiven for thinking, on brief acquaintance, that this is just another birdwatcher's travelogue full of sen...
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Notes

01 December 1963
Comments Notes my last note on the recovery of Starlings marked at Bradfield, Berkshire (Brit. Birds, VI., p. 13), twenty-five captures have to be recorded. Only two of these occurred abroad, or indeed more than five miles from the place where they were ringed, viz. :-...
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Notes

01 November 1963
Comments Notes IT has long been known that, in the Common Crossbill (Loxia curvirostra) the mandibles cross indifferently on either side in different individuals. Recently, however, for a special purpose, I desired to ascertain whether or not individuals having the man...
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Notes

01 June 1963
Comments Notes IN August I received a letter from Mr. A. C. Theron dated from " Riet Vallei, District Lindley, O.F.S." stating that a Swallow had been captured bearing a ring with my name and address. As Mr. Theron gave neither the number of the ring nor the date of cap...
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Notes

01 May 1963
Comments Notes FOE some years now I have been paying particular attention to the nestlings of common birds. It is of course now known to all ornithologists that the parents keep the nest clean (as a general rule) by carrying away the excrement, and often by swallowing ...
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Notes

01 April 1963
Comments Notes W E have received a good many schedules relating to these two inquiries (see Vol. VI., pp. 296-311, and Vol. VII, pp. 4-6), but we sincerely hope that many more of our readers will send in particulars. This should now be done without delay, and if the fo...
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Notes

01 February 1963
Comments Notes T H E following two records of marked Starlings have so far not been published except in t h e German reports :-- Vog. Rossitten No. 108 : marked in the nest on J u n e 10th, 1909, a t Lisden, near Wolmar, Livonia, Russia. Obtained about March 20th, 1911...
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Notes

01 April 1955
Comments Notes in The Handbook to the behaviour of flocks of Coot (Fulica atra) when attacked by birds of prey. On n t h January 1953, at Cannock Reservoir, Staffordshire, I witnessed the same behaviour when a Herring Gull (Larus argentatus) dived over a scattered flock...
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