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 licenseLeser black-backed gull (Larus fuscus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/325821/free-illustration-image-seagull-von-wright-brothers-centuryFree Image from public domain licenseEuropean Golden-Plover (Charadrius pluvialis apricarius) illustrated by the von Wright brothers. Digitally enhanced from our… https://www.rawpixel.com/image/325813/free-illustration-image-von-wright-brothers-1900s-public-domainFree Image from public domain licenseBlack guillemot (Uria Grylle) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/325805/free-illustration-image-von-wright-brothers-black-guillemot-animalsFree Image from public domain licenseParasitic jaeger (Stercorarius parasiticus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929… https://www.rawpixel.com/image/325773/free-illustration-image-von-wright-brothers-scandinavian-1900sFree Image from public domain licenseAnser albifrons illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of Svenska… https://www.rawpixel.com/image/325753/free-illustration-image-von-wright-brothers-1900s-public-domainFree Image from public domain licenseLong-tailed Duck male (Harelda hyemalis) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/325669/free-illustration-image-von-wright-brothers-bird-duckFree Image from public domain licenseDryobates minor illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of Svenska… https://www.rawpixel.com/image/325629/free-illustration-image-von-wright-brothers-bird-wrightFree Image from public domain licenseGreat snipe (Capella media) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/326121/premium-illustration-image-america-ancient-animalView license