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Letters

01 December 1956 Comments Letters I N T E R P R E T A T I O N O F V A R I A T I O N AMONG T H E YELLOW WAGTAILS S I R S , -- May I ask a little of your space in which to comment on some points in Dr. Mayr's summing-up (antea, pp. 115-119) of our present state of knowledge of the Yellow Wa...

Reviews

01 December 1956 Comments Reviews Edited by Major-General H . P . W . HUTSON, C.B., D . S . O . , O . B . E . , M.C. (Published by British Ornithologists' Union and distributed by H . F . & G. Witherby, Ltd., London, 1956). 268 pages. 21/-, postage 1/6. MANY ornithologists who spend much...

Notes

01 December 1956 Comments Notes Albinism related to age.--With reference to notes on this subject (antea, vol. xlvii, p . 406; vol. xlix, p . 153), I have come across a similar case, also with a male Blackbird (Turdus merula). The bird was ringed at Burgess Hill, Sussex, on 13th Decembe...

The Food of Nestling Purple Herons in Holland

01 December 1956 Comments Main paper IN late June 1956 we visited two colonies of Purple Herons (Ardea purpurea) in Holland in order to observe feeding and other behaviour for comparison with our studies in England of the Common Heron (A. cinerea). The colonies visited were at the Naardermee...

Obituary: A. W. P. Robertson (1908-1956)

01 December 1956 Comments Obituaries COMMANDER Alexander William Parrish Robertson, R . N . (Retd)., died on 13th June, 1956. Born a t Harlow, Essex, in August 1908 and educated at Harrow, he entered the Royal Navy in 1926 and served in China, the Mediterranean and Australia, followed by ser...

Photographic Studies of Some Less Familiar Birds: LXXVI. Osprey

01 December 1956 Comments Main paper (Plates 65-72) LIKE a number of the birds of prey, the Osprey (Pandion haliaetus) is a widespread species and h a s a breeding-range which extends from Alaska in the north-west to Australia in the south-east. It is, however, mainly a bird of the northern ...

Movements of House Sparrows

01 December 1956 Comments Main paper T H E migration of birds--the routes they take, the means by which they orient themselves and reach their destination--is at present receiving' considerable attention. The House Sparrow (Passer domesticus) is generally considered to be a sedentary bird an...

Reviews

01 October 1954 Comments Reviews Cheltenham and District Naturalists' Society. Report for 1951-1952. Obtainable from L. W. Hayward, 40 High Street, Prestbury, Cheltenham. 2s. 6d. WHILE we welcome this first printed bird report from Cheltenham for 1951 and 1952 we must look forward to far...

Notes

01 October 1954 Comments Notes and David Lack have given data showing that the times of arrival of greatest numbers of certain Passerines at the Kentish Knock Lightship and on the S.E. coast of England strongly suggest that they left the Continental coast at dawn (antea, vol. xlvi, pp....

Falco columbarius subaesalon brehm: A valid race

01 October 1954 Comments Main paper T H I S study arises directly out of the routine enquiries into problems of bird migration which are carried out at the Fair Isle Bird Observatory. In consequence it has been made with the needs of bird observatories in mind, for characters such as slight...

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Letters

Reviews

Notes

The Food of Nestling Purple Herons in Holland

Obituary: A. W. P. Robertson (1908-1956)

Photographic Studies of Some Less Familiar Birds: LXXVI. Osprey

Movements of House Sparrows

Reviews

Notes

Falco columbarius subaesalon brehm: A valid race

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