Letters

01 February 1971
Comments Letters Elusive species and the B.T.O. Ornithological Atlas project Some species are proving to be difficult to locate in fieldwork for the Ornithological Atlas. In order to prepare full maps for these species, we cannot rely solely on fieldwork carried out purel...
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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 March 1957
Comments Notes Ortolan Bunting in Middlesex. -- On the morning of 2nd September 1956, I was Walking along the northern bank of the River Brent where it flows into the Brent Reservoir, Middlesex, noting the many migrants which had arrived in the comparative calm after a ...
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