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Letters

01 May 1963 Comments Letters S I R S , -- I n t h e article on Incubation, b y Mr, Erie B. Dunlop (antea, p. 109), t h e writer s a y s : " Another bird which rears few young compared to t h e number of eggs it lays is t h e Great-erested Grebe. Four or five eggs are very frequently ...

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 ...

The Sequence of Plumages of the Rook, With Special Reference to the Moult of the " Face."

01 May 1963 Comments Main paper I T has always been a disputed point as to whether the Rook (Oorvus f. frugihgus) gets its bare " face " by means of abrasion of the feathers or by a moult. Most ornithologists have favoured the moult theory or have regarded it as a " natural peculiarity....

Letters

01 April 1951 Comments Letters SIRS,--Mr. K. E. L. Simmons's letter (antea, p. 40) on this subject draws attention to reactions in trapped birds intermediate between remaining immobile on the open hand and the extreme, trance-like "death feigning". A further case may be of interest. On...

Reviews

01 April 1951 Comments Reviews Notes on the Birds of Warwickshire by C. A. Norris. (Cornish Brothers Ltd., Birmingham, 1947). 8s. 6d. THE only previous account of the birds of this county was that published by R. F. Tomes in the Victoria History of Warwickshire in 1904. The present lit...

Notes

01 April 1951 Comments Notes T H E following notes, made on a colony of Rooks (Corvus frugilegus) in a Cambridge street during March, 1949, have been prompted by Mr. C. M. Ogilvie's article on this subject (antea, pp. 1-5). This rookery, comprising only five pairs, was a new one, pr...

The aerial dawn chorus of the Swallow

01 April 1951 Comments Main paper (i) Over a number of years one of us (A. V. B.), has ringed migrants at Jupille, near Liege, between Aug. 20th and Sep. 15th, always arriving at the trap before dawn. W h e n the weather is fine, with a cloudless sky and little or no wind, a song-chorus o...

The use of extruded plastic for colour marking

01 April 1951 Comments Main paper F O R an investigation of the dispersal of juvenile gulls an economical method of mass colour marking was needed. The standard celluloid ring proved expensive, limited in size and difficult to attach. Enquiries were made from manufacturers as to the possi...

The Index of Heron population, 1950

01 April 1951 Comments Main paper (Edward Grey Institute, Department of Zoological Field Studies, Oxford). T H E number of heronries on which reports for 1950 were received at the Edward Grey Institute was 207, or 45 more than in the previous year. Of these 150 were in England, 17 each in...

Fair Isle Bird Observatory. Notes on selected species, Autumn, 1950

01 April 1951 Comments Main paper KENNETH WILLIAMSON (Director). T H I S contribution follows similar lines to the one published (antea, vol. xliii, p p . 48-52), dealing with the 1949 season: the aim is not to give a complete record of the appearance of scarce migrants, but to extract fr...

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Letters

Notes

The Sequence of Plumages of the Rook, With Special Reference to the Moult of the " Face."

Letters

Reviews

Notes

The aerial dawn chorus of the Swallow

The use of extruded plastic for colour marking

The Index of Heron population, 1950

Fair Isle Bird Observatory. Notes on selected species, Autumn, 1950

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