Fifty years ago, a Note reported on: 'COMMON GULLS NESTING ON BIRCH TREES. In June, 1945,  during a period of leave spent on Upper Deeside (Aberdeenshire), I noted on several occasions Common Gulls (Larus c. canus), perching on trees near the rivers Dee and Clunie. On June 7th, my attention was attracted by one of a pair perched on the branch of a birch tree on the fringe of a small wood

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