frugilegus in Nottinghamshire in 1962 and compares the figures with those from four other censuses in the previous 34 years. The first counts were made by A. Roebuck in 1928 (Roebuck 1933) and again in 1932. There was then a wartime census by A. I. H. Docksey and A. Roebuck in 1944, and in 1958 the Trent Valley Bird Watchers organised a repeat count to ascertain how the population had changed in t...

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