Search

Migration in late September and October 1951

01 January 1975 Comments Main paper ...

Flocking behaviour of Oystercatchers

01 March 1953 Comments Main paper SOME observations made in company with Ian Munro during a twohours' watch from a permanent hide, built by him near the tip of a sand-and-shingle spit in the Eden estuary, Fife, may have some interest for students of bird behaviour. We entered the hide two...

The Arctic Skua in Caithness

01 March 1953 Comments Main paper little has been published recently on the status of the Arctic Skua (Stercorarius parasiticus) in Caithness, and in order to try to provide fuller information than that quoted by Southern (1943) I spent a week on the Caithness moors in 1952 from June 21st...

A balance for weighing tits without capture

01 March 1953 Comments Main paper (Plate 16). RECORDING of the change in weight of individual birds can provide useful data to assist in the study of bird life. The usual method of obtaining this information is by trapping ringed birds and weighing on a laboratory type of balance. Not onl...

The index of Heron population, 1952

01 March 1953 Comments Main paper (Edward Grey Institute, Oxford). THE number of heronries on which reports for 1952 were received at the Edward Grey Institute was 197, or 7 more than in the previous year. Of these 151 were in England, 8 in Wales, 14 in Scotland and 24 in Ireland. The Rev...

Note on the nesting of a pair of Jays inside a hollow tree

01 March 1953 Comments Main paper (Plates 14-15) BETWEEN 1947 and 1951 Jays (Garrulus glandarius), apparently the same pair, nested in a certain part of a 70-acre orchard near Hadleigh, Essex, where the apple and pear trees were all over 50 years old and many of the former had holes in th...

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...

Stay at the forefront of British birding by taking out a subscription to British Birds.

Subscribe Now