Hand drawing set of owls illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/325815/premium-illustration-psd-owl-von-wright-brothers-vintageView licenseEast Brazilian pygmy owl, glaucidium minutissimum (1768–1849) by Jean Gabriel Prêtre. https://www.rawpixel.com/image/11499513/image-art-vintage-illustrationFree Image from public domain licenseHand drawing of birds collection illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version… https://www.rawpixel.com/image/326115/premium-illustration-psd-eagle-tawny-owl-sparrowhawkView licensePng Eurasian pygmy owl bird hand drawn https://www.rawpixel.com/image/2627948/free-illustration-png-owl-bird-birds-americaView licenseGlaucidium passerinum illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of Svenska… https://www.rawpixel.com/image/325613/free-illustration-image-owl-von-wright-brothersFree Image from public domain licenseGlaucidium passerinum illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of Svenska… https://www.rawpixel.com/image/325983/premium-illustration-psd-glaucidium-passerinum-america-ancientView license