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 licenseHand drawn owl png bird set https://www.rawpixel.com/image/2634584/free-illustration-png-owl-birds-vintage-setView license Plate 47: Hawk Owl, Schreech Owl, Richardson's Owl, Saw-whet Owl by Louis Agassiz Fuertes https://www.rawpixel.com/image/8905428/image-watercolor-art-vintageFree Image from public domain licenseBoreal Owl, Tengmalm's Owl (Aegolius funereus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929… https://www.rawpixel.com/image/326204/premium-illustration-psd-owl-animal-ancientView 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 licenseLittle Owl from Birds of America (1827) by John James Audubon, etched by William Home Lizars. Original from University of… https://www.rawpixel.com/image/277392/free-illustration-image-owl-audubon-birds-america-public-domainFree Image from public domain licenseBoreal Owl, Tengmalm's Owl (Aegolius funereus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929… https://www.rawpixel.com/image/325890/free-illustration-image-owl-von-wright-brothersFree Image from public domain licenseTengmalm's Owl from Birds of America (1827) by John James Audubon, etched by William Home Lizars. Original from University… https://www.rawpixel.com/image/277452/free-illustration-image-owl-audubon-america-birds-public-domain-audubonFree Image from public domain license