study forms the third of a series of five whose object is to show the characteristic migrations of various widespread passerine species northward over Europe every spring. Maps showing the rate of spread of the Swallow (Hirundo r. rustled) and of the Willow-Warbler (Phyttoscopus irochilus) have already been published [i and 2], and the present map and article deal with the Redstart (Phanicurus ph....

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