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The new research findings also now explain why the only vagrants to have been seen by bird-spotters in Central Europe are long-distance migratory birds from Far East Asia. The genetically programmed journey for short-distance migratory birds from Asia would end somewhere in the west of northern Asia.

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Source: Deutsches Zentrum fur Luft- und Raumfahrt (DLR) / modified from Susan Walter/UFZ

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