Abstract
OBSERVATIONS made in the neighbourhood of Tunbridge Wells have led Messrs. C. J. and H. G. Alexander to conclude that in the case of many of our migratory species of birds, each pair occupies a definite and restricted area during the breeding-season, into which other pairs of the same species do not intrude. This has led to the formulation of a scheme for mapping the individual distribution of such migratory birds in their breeding-haunts, the details of this plan being explained by the authors in the March number of British Birds. In noting on the map the nesting-area of any particular pair of birds, the authors generally relied upon the singing of the cock in one special spot. A reproduction of the Ordnance Survey map on the 6-inch scale of a small district in the neighbourhood of Tunbridge Wells, on which have been marked the nesting-areas of the individual pairs of migratory birds, serves to illustrate the plan.
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Some Bird-Papers . Nature 80, 113 (1909). https://doi.org/10.1038/080113a0
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DOI: https://doi.org/10.1038/080113a0