Northern hawk-owl (SURNIA ULULA) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version… https://www.rawpixel.com/image/326182/premium-illustration-psd-owl-surnia-ulula-americaView licenseNorthern hawk-owl (SURNIA ULULA) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version… https://www.rawpixel.com/image/326094/free-illustration-image-owl-von-wright-brothersFree Image from public domain licenseHand 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 licenseHand drawn owl png bird set https://www.rawpixel.com/image/2634584/free-illustration-png-owl-birds-vintage-setView 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 licenseNorthern hawk-owl (SURNIA ULULA) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version… https://www.rawpixel.com/image/326047/premium-illustration-image-owl-von-wright-brothers-americaView licenseHawk Owl from Birds of America (1827) by John James Audubon, etched by William Home Lizars. Original from University of… https://www.rawpixel.com/image/277254/free-illustration-image-owl-audubon-birds-america-public-domainFree Image from public domain licenseNorthern hawk-owl (Surnia Ulula) illustration wall art print and poster. https://www.rawpixel.com/image/306544/premium-illustration-image-owl-von-wright-brothers-americaView license