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Keywords from Image Description:
Naumann II. . air Sylvia atricapilla Mnchgrasmcke altes Mnncten altes Weibchen junges rotkpfiges Mnnchen Sylvia rubricapUla Landbeck Mnnchen Melanismus von der Insel Madeira Sylvia Heinekeni Jardine Natri Grse II Illustration biodiversitylibrary org title Hennicke Carl Richard Naumann Johann Andreas Naumann Johann