Public domain illustrated book page scan, related to zoology, free to use, no copyright restrictions image - Picryl description
Public domain scan of 19th-century zoological illustration, free to use, no copyright restrictions image
Public domain scan of print / book page depicting birds, ornithology, free to use, no copyright restrictions image - Picryl description
Picryl description: Public domain image of a bird in flight, free to use, no copyright restrictions.
Picryl description: Public domain natural history illustrated book page scan, free to use, no copyright restrictions image.