Ruff (Pavoncella pugnaxr) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/325877/free-illustration-image-von-wright-brothers-wright-birdFree Image from public domain licenseRuff ♂(Pavoncella pugnaxr) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/325979/premium-illustration-psd-abstract-america-ancientView license