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...
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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...
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Variations in Chaffinch Song

01 August 1943
Comments Main paper WORKING at first with four birds (A, B, C and D) I made the following observations on the songs of Chaffinches (FringiUa c. gengleri) in a coastal area of south Devon during the spring of 1942. B and C held adjacent territories and their songs were inter...
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Review

01 August 1943
Comments Reviews A Study of the Little Owl (Athene noctua) in New Zealand. By B. J. Marples. Trans. R. Soc. of New Zealand, Vol. 72, Part 3, pages 237-252, December, 1942 . M R . MARPLES undertook, in 1938, to make a thorough investigation of t h e Little Owl from every p...
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Notes

01 August 1943
Comments Notes As already briefly noted (antea Vol. xxxvi, p. 225) Crossbills (Loxia c. curvirostra) were reported in various districts in unusual numbers in the late summer and autumn of 1942. In response to our request, observers have sent information, details of whi...
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