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Letters

01 April 1948 Comments Letters SIRS,--Messrs. Wagstaffe and Williamson's paper (antea, Vol. xl, p p . 322-325), on t h e cabinet colour changes in bird skins, will be read b y all workers in systematic ornithology with great interest. That these changes occur is of course well known, a...

The incubation and fledging-periods of the Razorbill

01 April 1948 Comments Main paper THE incubation-period of the British Razorbill (Alca tarda britannica) does not appear to have been accurately recorded. The Handbook of British Birds (Vol. v, p. 146), quotes the incubation-period as "25 days in incubator (F. G. Paynter), 26-30 (O. A. J....

Notes

01 November 1939 Comments Notes FOR some seven years I have marked Chaffinches (Fringilla c. gengleri) frequenting my garden with coloured rings for identification. One pair so marked mated and fed young in a copse opposite my gate in June, 1937. In the spring of 1938 the same pair nes...

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Letters

The incubation and fledging-periods of the Razorbill

Notes

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