Letters

01 December 1984 Comments Letters Tufted Duck carrying young. In connection with the recent notes by Montse Carbonell and Stephen B. Edwards (Brit. Birds 77: 318-319), I should like to draw attention to a previous published account by my husband, the late Dr Jeffery Harrison, of a fema...
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Reviews

01 February 1971 Comments Reviews Signals for Survival. By Niko Tinbergen and Hugh Falkus. Drawings by Eric Ennion. Clarendon Press, Oxford, 1970. 80 pages; 88 photographs; many coloured sketches. £2. Based on the B.B.C. film which won the Italia Prize for documentaries in 1969, thi...
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Notes

01 May 1933 Comments Notes As the Jackdaw (Colceusm. spermologus) is a bird not usually subject to variation, some notes on a local variety seen at Douglas may be of interest. These white-winged Jackdaws are best described as having on the outer primary a white spot or " mirror " e...
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