White-backed woodpecker 1♀ , 2♂ (Dryobates leucotus) illustrated by the von Wright brothers. Digitally enhanced from our own…
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Black grouse (Lyrurus tetrix) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of…
Eurasian stone curlew (burhinus oedicnemus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929…
https://www.rawpixel.com/image/325827/free-illustration-image-von-wright-brothers-burhinus-oedicnemus-stone-curlewFree Image from public domain license
Gadwall (Anas (Chauelasmus) Strepera) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio…
Brambling (Fringilla Montifringilla) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio…
https://www.rawpixel.com/image/325647/free-illustration-image-von-wright-brothers-birds-the-von-brothers-fringillaFree Image from public domain license
Greater Scaup, Scaup female (Nyroca marila) illustrated by the von Wright brothers. Digitally enhanced from our own 1929…