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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...

Recovery of Marked Birds

01 August 1935 Comments Main paper Almondbank (Perth.), 20.8.34, Dumfries., --.12.34, by M. by Lord Mansfield. Williamson. Leswalt (Wigtown.), 6.3.34, by Loch Spynie (Moray.), J. Law. 16.2.35, by J- B. Dunbar. Ditto 9-3-34- Dovre, Opland, Norway, 2 9-4-35> by Zool. Mus., Oslo. Ditto 8.3.3...

Notes from the Isle of Man, 1933 and 1934

01 August 1935 Comments Main paper from the Point of Ayre Light for 1933, and the Chickens for 1933 and 1934, do not show a very large amount of migration. In mid-April and May, and again in the autumn of 1933, there were many Wheatears at the Chickens. On October 19th and 22nd, and again ...

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