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 XXIII . Plate XXIII Woodpecker C'ampophilus principalis Fig Great Black Woodpecker Picus martius Plate XXIII Illustration biodiversitylibrary org title Pycraft NameFound Picus martius NameConfirmed Picus martius Biodiversity Heritage Library book of birds Birds Smithsonian Institution Libraries