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…
Spotted Nutcracker (Nucifraga caryocatactes) illustrated by the von Wright brothers. Digitally enhanced from our own 1929…
https://www.rawpixel.com/image/326079/free-illustration-image-von-wright-brothers-nutcracker-nucifraga-caryocatactesFree Image from public domain license
Dryocopus martius illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of Svenska…