What brought about the influx of Siberian Accentors to Europe in autumn 2016? A contribution to the debate
01 December 2019
Letters
The autumn of 2016 witnessed an unprecedented westward influx of Siberian Accentors Prunella montanella from their breeding areas. Previously, there had been no more than five records per year in Europe, but during the autumn and winter of 2016/...
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