Black-headed gull ♂ (Larus ridibundus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/326264/free-illustration-image-von-wright-brothers-larus-ridibundus-seagullFree Image from public domain licenseBlack-headed gull (Larus Ridibundus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/325929/free-illustration-image-seagull-von-wright-brothers-centuryFree Image from public domain licenseBlack-headed gull (Larus Ridibundus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/326028/premium-illustration-psd-larus-ridibundus-america-ancientView licenseBlack-headed gull ♂ (Larus ridibundus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/326065/premium-illustration-psd-black-headed-gull-seagull-larus-ridibundusView license