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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...

Notes

01 April 1948 Comments Notes IN a recent volume of British Birds (antea. Vol. xxxix, pp. 212 and 340) records are given of Ravens (Corvus c. corax) nesting in heronries. I should like to record that for several years up to 1942, a pair of Ravens nested in a circle of tall pines cont...

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....

Bird life on Pett level floods, 1941-1943

01 April 1948 Comments Main paper {concluded from p. 70). 1942 {continued). On February 4th, while in a hide, well in the middle of the water, I identified seven Long-tailed Ducks. They came within a few yards of me and two of them were adult drakes, the first I had seen in Sussex. They w...

Further notes on Clutch and brood size in the Robin

01 April 1948 Comments Main paper THE following paper on the breeding biology of the Robin (Erithacus rubecula) is a sequel to that published earlier (Lack, 1946), knowledge of which is assumed. In addition to nesting records for 1946, a number of additional records were received for past...

Letters

01 February 1938 Comments Letters SIRS,--In reply to Mr. Lockley's letter under this heading (antea, pp. 278-9), I had two main points t o make in m y report on Skokholm Island, namely :-- 1. That owing t o its depredations on Storm-Petrels, the Little Owl should, if possible, be prevente...

Notes

01 February 1938 Comments Notes ON April 15th, 1937, a male Bullfinch which appeared to be much larger than the British Bullfinch (Pyrrhula p. pileata) was seen moving about in some trees on Holy Island. Later in the day this bird was shot by a resident on the island and was sent in to...

Recovery of marked birds

01 February 1938 Comments Main paper Rawdon (Yorks), 24.4.37, by Bramhope (Yorks), 15.7.37. C. Wontner-Smith. Ditto 4-S-37- Allerton (Yorks), 13.8.37. Stodmarsh (Kent), 16.4.33, by Where ringed, --.9.37. Oxford Orn. Soc. R I N G E D AS FULL-GROWN. Gt. Budworth (Ches), 17.7.35, Acton Bridge ...

Birds seen in two winter transects of the North Atlantic

01 February 1938 Comments Main paper bird-counts of the North Atlantic crossing have already appeared, and in these the significance of the figures has been fully discussed. The most comprehensive is by V. C. Wynne-Edwards (Proc. Boston Soc, Nat. Hist., Vol. XL., No. 4, pp. 233-346. January,...

Notes on the Gannetries of Sule Stack and Sula Sgeir

01 February 1938 Comments Main paper (Plate I I . ) IT may be safely said that in a quarter of a century no new information has been added to our previous knowledge of the gannetry of Sule Stack, and with the exception of my notes on Sula Sgeir [10]* these same remarks apply to this latter g...

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Letters

Notes

The incubation and fledging-periods of the Razorbill

Bird life on Pett level floods, 1941-1943

Further notes on Clutch and brood size in the Robin

Letters

Notes

Recovery of marked birds

Birds seen in two winter transects of the North Atlantic

Notes on the Gannetries of Sule Stack and Sula Sgeir

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