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
Common chiffchaff (Phylloscopus collybita) and House Sparrow female (Passer domesticus) illustrated by the von Wright…