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Keywords from Image Description:
Naumann I. . Geocichla sibiiica Pall Sibirische Drossel altes Manuellen altes Weibchen Mnnchen im bergangskleide vom ersten zum zweiten Jahre Mnnchen im ersten Herbste Weibchen im ersten Herbste Illustration biodiversitylibrary org title Hennicke Carl Richard Naumann Johann Andreas Naumann Johann Andreas Naumann