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:
Abbildungen von VogelSkeletten Tafel . Meyer Abb Vogelskeletten Tafel ia ' Perdix cijierea Latk Tafel Illustration biodiversitylibrary org title Meyer Adolf Bernhard NameFound Perdix NameConfirmed Perdix EOLID NameBankID Biodiversity Heritage Library Abbildungen von VogelSkeletten Anatomy Birds Smithsonian Institution