Letters

01 May 1989 Comments Letters The separation of Northern and Isabelline Wheatears. On returning to the beautifully illustrated paper 'Field identification of West Palearctic wheatears' (Brit. Birds 80: 137-157, 187-238), I noticed a feature separating Isabelline Oenanthe isabellina...
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Letters

01 June 1985 Comments Letters Bill coloration of treecreepers. The note by Laurel Tucker (Brit. Birds 77: 263-264) questions if the upper mandible coloration could assist in the field separation of the two European treecreepers Certhia. Photographs, in Vara Figlar i Norden (1942) b...
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Letter

01 August 1982 Comments Letters Tail-wagging by wheatears While the pronounced tail-wagging of the Isabelline Wheatear Oenanthe isabellinus is a 'helpful pointer' towards identification (Brit. Birds 74: 443), this habit is also typical of the-- admittedly smaller and daintier...
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Letter

01 May 1935 Comments Letters SIRS,--A sample count of Great Crested Grebes (Podiceps c. cristatus) is to be taken during the coming summer under the auspices of the British Trust for Ornithology. The main object of the count is to ascertain as far as possible what effect the past two...
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Letters

01 February 1935 Comments Letters SIRS,--May I say something on this vexed subject ? I speak of those territorial species whose young depend upon insects for food. Three sets of facts seem connected :-- (i) T h a t in a cold and wet breeding season we find infertile eggs, chicks dead in t...
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Letters

01 January 1935 Comments Letters SIRS,--1 read with interest Mr. Rickman's note regarding the nesting oi the Pintail in Dumbartonshire (antea, p, 206). For many years I have kept and bred Pintail at Tullichewan, which is only about two or three miles from the spot where Mr. Rickman found...
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