By Andy Stoddart
Abstract Autumn 2016 was arguably the best ever for Siberian vagrants in Britain but it will be remembered most for the unprecedented influx of Siberian Accentors Prunella montanella. This paper documents this extraordinary event, setting it in the context of a much larger arrival across northern Europe. It is suggested that the influx resulted from an unusual conjunction of meteorological factors but some other possible mechanisms are also discussed.
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