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:
Dartford Warbler Grnvold. en An illustration of male above and female below Dartford Warbler at their nest by Henrik Grnvold org Birds of Great Britain and Ireland Order Passeres vol plate Creator Henrik Grnvold in book by Arthur Gardiner Butler PDold Henrik Grnvold Sylvia undata Birds of Great Britain and Ireland Butler