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The index of heron population

01 March 1950 Comments Main paper The number of heronries on which reports for 1949 were received at the Edward Grey Institute was 162, or 16 more than in the previous year. Of these 117 were in England, 9 in Wales, 17 in Scotland and 19 in Ireland. We are indebted to 79 informants of who...

The Behaviour Of Corn-Crakes

01 March 1950 Comments Main paper MASON DURING the past few years the writer, with the help of friends, has carried out a series of experiments with Corn-Crakes {Crex crex) The experiments consist in calling up Corn-Crakes to a stuffed dummy by imitating the " crake-crake " song with a p...

On The Courtship And Social Displays Of Three Species Of Auk

01 March 1950 Comments Main paper CONDER DURING the summer of 1947 I had opportunities of watching the breeding displays of the Razorbill (Aha torda), the Guillemot (Una aalge), and the Puffin (Fratercula arctica) on Skokholm, Pembrokeshire. The displays of the three species occurred chi...

Fair Isle bird observatory

01 February 1950 Comments Main paper Compiled by KENNETH WILLIAMSON (Director). The following notes have been selected from the Fair Isle Bird Observatory " Notes on Species " record-book as much for their importance in amplifying the information contained in The Handbook of British Birds a...

Marsh-Tit territories over six years

01 February 1950 Comments Main paper ...

Reviews

01 February 1950 Comments Reviews Yorkshire Naturalists' Union. Committee for Ornithology Reports for 1947 and 1948. Edited by Ralph Chislett. (Reprinted from The Naturalist, 1948, pp. 51-74, and 1949, 51-75.) T H E S E reports as usual contain much valuable material. Up to four Gannets w...

Notes

01 February 1950 Comments Notes DURING a visit to Thanet in the autumn of 1947, I was enabled, through the kindness of Mrs. Powell-Cotton, to examine the small collection of locally-taken bird-skins in the above museum. These were made readily available to me by the present Curator, Mr...

Scenes at an artificial drinking pool

01 February 1950 Comments Main paper (53) SCENES AT AN ARTIFICIAL DRINKING POOL. Photographed by ERIC HOSKING. (Plates 10--16). The scenes illustrated in plates 10-16 were taken at an artificial drinking pool in Suffolk during the summer of 1949, mostly in June. Mr. Hosking writes that " pos...

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