This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Naumann II. . Natrl Grsse Sylvia melanocephala Gmel Schwarzkpfige Grasmcke Mnnchen Weibchen Sylvia undata Bodd Provence Grasmcke Weibchen Mnnchen Hypolais salicaria Pall Zwergsnger Mnnchen II Illustration biodiversitylibrary org title Hennicke Carl Richard Naumann Johann Andreas Naumann Johann Andreas Naumann Johann