Western yellow wagtail (Motacilla [budytes] flava) illustrated by the von Wright brothers. Digitally enhanced from our own…
https://www.rawpixel.com/image/326303/free-illustration-image-von-wright-brothers-wagtail-high-resolution-cc0-art-birdFree Image from public domain license
Great black-backed gull (Larus Marinus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio…
White-backed woodpecker 1♀ , 2♂ (Dryobates leucotus) illustrated by the von Wright brothers. Digitally enhanced from our own…
https://www.rawpixel.com/image/325980/free-illustration-image-von-wright-brothers-bird-white-backed-woodpecker-vintageFree Image from public domain license
Goshawk female (Accipiter gentilis) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio…