Letters

01 April 1986 Comments Letters Escapes? Some years ago, Derek Goodwin and the late Derrick England published some long comments on the problem for birdwatchers of escaped cage birds (Brit. Birds49: 339-349; 67: 177-197). Since those papers, a new generation of birders has appeared, ...
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Letters

01 May 1978 Comments Letters Field identification of Black-throated Diver in winter Mystery photograph 14 (Brit. Birds 71: 34) was very interesting and instructive. It illustrated clearly the distinctive white thigh patch of Black-throated Diver Gavia arctica, which I have...
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Letters

01 November 1976 Comments Letters The Coto Doñana In 'News and comment' in April 1966 (Brit. Birds, 59: 163-164), it was announced that H. E. Axell, then warden of Minsmere, Suffolk, had been seconded for two months by the Royal Society for the Protection of Birds to the reser...
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Letters

01 February 1971 Comments Letters Elusive species and the B.T.O. Ornithological Atlas project Some species are proving to be difficult to locate in fieldwork for the Ornithological Atlas. In order to prepare full maps for these species, we cannot rely solely on fieldwork carried out purel...
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Letters

01 November 1955 Comments Letters T H E " D U N G E N E S S " RINGING-PLIERS SIRS,--Although the Bird-Ringing Committee welcomes the " D u n g e n e s s " ringing-pliers as a valuable aid to better ringing, there are two dangers concerning their use which were not mentioned by Mr. H . E ....
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Letters

01 October 1934 Comments Letters SIRS,--Mr. R. L. Brown, in his interesting notes on the Kingfisher (antea, p. 83), reports a pair of birds having a clutch several days incubated when they had at the same time a brood in an adjacent nest. The experience especially interested me because t...
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Letters

01 November 1931 Comments Letters SIRS,---It so happened that, after reading the letter on this subject (antea.-p, 140), I had to consult The Gentleman's Magazine (Vol. XIX.), 1749. I t was curious therefore to come across the following (p. 204) : " The Egg of a Swan with another in it. G...
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