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
Merlin female (Falco aesalon) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of…
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
Eurasian Hobby (Falco subbuteo) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version…