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:
A book of birds Plate XXX . Plate XXX Fig Nutcracker Nucifraga caryocatacies Fig Rook Corvua frugilegtis Plate XXX Illustration biodiversitylibrary org title Pycraft NameFound Corvua frugilegtis NameConfirmed Corvus frugilegus EOLID NameBankID NameFound Nucifraga NameConfirmed Nucifraga EOLID NameBankID Biodiversity