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Keywords from Image Description:
Fringillidae naumann. Fringilla montifringilla one bird at the top Fringilla coelebs in the middle male left and female right Carduelis carduelis at the bottom adult left and young right biologie unihamburg de htm Publ Naumann Naturgeschichte der Vgel Mitteleuropas Image Poster Fringilla coelebs Image Stieglitz NAUMANN