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:
Great American Shrike or Butcher Bird. LargeImage WillowGrousorLargePtarmigan LincolnFinch Plate of Birds of America by John James Audubon depicting Great American Shrike or Butcher Bird library pitt edu view entrycc audentryid xaud University of Pittsburgh creator John James Audubon PDold The Birds of America