Red Admiral (Pyrameis Atalanta). Digitally enhanced from our own publication of Moths and Butterflies of the United States… https://www.rawpixel.com/image/403478/free-illustration-image-butterfly-red-admiral-mothFree Image from public domain licenseQuestion Mark (Grapta Interrogationis). Digitally enhanced from our own publication of Moths and Butterflies of the United… https://www.rawpixel.com/image/403482/free-illustration-image-butterfly-vintage-butterflies-dentonFree Image from public domain licenseAngled Sulphur (Gonepteryx Maerula). Digitally enhanced from our own publication of Moths and Butterflies of the United… https://www.rawpixel.com/image/403494/free-illustration-image-butterfly-high-resolution-prints-vintage-animalFree Image from public domain licenseAilanthus Silkmoth (Attacus Cynthia). Digitally enhanced from our own publication of Moths and Butterflies of the United… https://www.rawpixel.com/image/403458/free-illustration-image-moth-butterfly-dentonFree Image from public domain licenseSilver-spotted Skipper (Eudamus Tityrus). Digitally enhanced from our own publication of Moths and Butterflies of the… https://www.rawpixel.com/image/403466/free-illustration-image-skipper-butterflyFree Image from public domain licenseWood-nymph (Satyrus Alope). Digitally enhanced from our own publication of Moths and Butterflies of the United States… https://www.rawpixel.com/image/403471/free-illustration-image-butterfly-vintage-butterflies-bug-andFree Image from public domain licenseSnout Butterfly (Libythea Bachmani). Digitally enhanced from our own publication of Moths and Butterflies of the United… https://www.rawpixel.com/image/403470/free-illustration-image-butterfly-vintage-butterflies-public-domainFree Image from public domain licenseSpring Cankerworm (Anisopteryx vernata). Digitally enhanced from our own publication of Moths and butterflies of the United… https://www.rawpixel.com/image/403544/free-illustration-image-butterfly-spring-1900sFree Image from public domain licenseVarious Forms of Plume Moths. Digitally enhanced from our own publication of Moths and butterflies of the United States… https://www.rawpixel.com/image/403524/free-illustration-image-butterflies-animal-1900sFree Image from public domain licenseTwenty-plume Moth (Alucita hexadactyla). Digitally enhanced from our own publication of Moths and butterflies of the United… https://www.rawpixel.com/image/403526/free-illustration-image-vintage-animal-butterfliesFree Image from public domain licenseErmine Moth (Hyponomeuta millepunctatella). Digitally enhanced from our own publication of Moths and butterflies of the… https://www.rawpixel.com/image/403528/free-illustration-image-vintage-butterflies-1900sFree Image from public domain licenseLocust Leafroller Moth (Depressaria robiniella). Digitally enhanced from our own publication of Moths and butterflies of the… https://www.rawpixel.com/image/403530/free-illustration-image-butterfly-denton-1900sFree Image from public domain licenseCodling Moth (Carpocapsa pomonella). Digitally enhanced from our own publication of Moths and butterflies of the United… https://www.rawpixel.com/image/403534/free-illustration-image-denton-butterflies-1900sFree Image from public domain licenseLeaf-rollers. Digitally enhanced from our own publication of Moths and butterflies of the United States (1900) by Sherman… https://www.rawpixel.com/image/403536/free-illustration-image-butterflies-1900s-public-domainFree Image from public domain licenseLeaf-rollers. Digitally enhanced from our own publication of Moths and butterflies of the United States (1900) by Sherman… https://www.rawpixel.com/image/403537/free-illustration-image-denton-butterflies-1900sFree Image from public domain licenseChickweed Geometer (Haematopis grataria). Digitally enhanced from our own publication of Moths and butterflies of the… https://www.rawpixel.com/image/403546/free-illustration-image-butterfly-1900s-public-domainFree Image from public domain licenseSetaceous Hebrew Character (Agrotis c-nigram). Digitally enhanced from our own publication of Moths and butterflies of the… https://www.rawpixel.com/image/403557/free-illustration-image-butterflies-century-dentonFree Image from public domain licensePeachtree Borer (Aegeria exitiosa) - Male. Digitally enhanced from our own publication of Moths and butterflies of the… https://www.rawpixel.com/image/403577/free-illustration-image-male-vintage-butterfliesFree Image from public domain licenseDrasteria erechtea. Digitally enhanced from our own publication of Moths and butterflies of the United States (1900) by… https://www.rawpixel.com/image/403553/free-illustration-image-butterflies-antique-insects-butterfly-public-domainFree Image from public domain licenseSpring Cankerworm (Anisopteryx autumnata). Digitally enhanced from our own publication of Moths and butterflies of the… https://www.rawpixel.com/image/403545/free-illustration-image-butterflies-denton-springFree Image from public domain licenseEpione Underwing (Catocala epione). Digitally enhanced from our own publication of Moths and butterflies of the United… https://www.rawpixel.com/image/403551/free-illustration-image-moth-butterflies-antique-insectsFree Image from public domain licenseStriped Cutworm (Agrotis tassellata). Digitally enhanced from our own publication of Moths and butterflies of the United… https://www.rawpixel.com/image/403556/free-illustration-image-butterflies-moth-1900sFree Image from public domain licenseDusky Cutworm (Agrotis venerabilis). Digitally enhanced from our own publication of Moths and butterflies of the United… https://www.rawpixel.com/image/403560/free-illustration-image-denton-butterflies-1900sFree Image from public domain licenseCrocus Geometer (Angerona crocataria). Digitally enhanced from our own publication of Moths and butterflies of the United… https://www.rawpixel.com/image/403543/free-illustration-image-butterflies-denton-1900sFree Image from public domain licenseLinden Looper (Hybernia tiliaria). Digitally enhanced from our own publication of Moths and butterflies of the United… https://www.rawpixel.com/image/403547/free-illustration-image-moth-butterflies-insectFree Image from public domain licenseGelechioid Moths (Tinea flavifrontella). Digitally enhanced from our own publication of Moths and butterflies of the United… https://www.rawpixel.com/image/403527/free-illustration-image-butterflies-1900s-public-domainFree Image from public domain licenseLeaf-rollers. Digitally enhanced from our own publication of Moths and butterflies of the United States (1900) by Sherman… https://www.rawpixel.com/image/403535/free-illustration-image-butterflies-century-1900sFree Image from public domain licenseMoth illustration. Digitally enhanced from our own publication of Moths and butterflies of the United States (1900) by… https://www.rawpixel.com/image/403550/free-illustration-image-butterflies-vintage-butterflies-antique-insectsFree Image from public domain licenseUnicorn moth (Coelodasys unicornis). Digitally enhanced from our own publication of Moths and butterflies of the United… https://www.rawpixel.com/image/403570/free-illustration-image-unicorn-vintage-antique-insectsFree Image from public domain licenseTongue of Sphinx. Digitally enhanced from our own publication of Moths and butterflies of the United States (1900) by… https://www.rawpixel.com/image/403510/free-illustration-image-1900s-public-domain-20th-centuryFree Image from public domain licenseMetamorphosis of Papilio (Butterfly). Digitally enhanced from our own publication of Moths and butterflies of the United… https://www.rawpixel.com/image/403599/free-illustration-image-metamorphosis-butterflyFree Image from public domain licenseLarva of Gramatophora trisignata. Digitally enhanced from our own publication of Moths and butterflies of the United States… https://www.rawpixel.com/image/403562/free-illustration-image-butterflies-larva-1900sFree Image from public domain licenseDevelopment of a Butterfly. Digitally enhanced from our own publication of Moths and butterflies of the United States… https://www.rawpixel.com/image/403513/free-illustration-image-butterfly-cycle-lifeFree Image from public domain licenseChrysalis of Limenitis ursula (Red-spotted Purple). Digitally enhanced from our own publication of Moths and butterflies of… https://www.rawpixel.com/image/403594/free-illustration-image-red-butterfly-1900s-public-domainFree Image from public domain licenseChrysalis of Papilio ajax. Digitally enhanced from our own publication of Moths and butterflies of the United States (1900)… https://www.rawpixel.com/image/403598/free-illustration-image-butterfly-1900s-public-domainFree Image from public domain licenseChrysalis of Vanessa (Brush-footed Butterflies). Digitally enhanced from our own publication of Moths and butterflies of… https://www.rawpixel.com/image/403596/free-illustration-image-butterfly-vanessa-chrysalisFree Image from public domain licensePupae of Sphinx Moth. Digitally enhanced from our own publication of Moths and butterflies of the United States (1900) by… https://www.rawpixel.com/image/403582/free-illustration-image-cocoon-butterfly-insectsFree Image from public domain licenseChrysalis of Apatura clyton (Emperors). Digitally enhanced from our own publication of Moths and butterflies of the United… https://www.rawpixel.com/image/403592/free-illustration-image-cocoon-chrysalis-butterflyFree Image from public domain licenseChrysalis of Callidryas eubale (Sulphur). Digitally enhanced from our own publication of Moths and butterflies of the… https://www.rawpixel.com/image/403597/free-illustration-image-animals-1900s-public-domainFree Image from public domain licenseChrysalis of Papilio troilus (Spicebush Swallowtail). Digitally enhanced from our own publication of Moths and butterflies… https://www.rawpixel.com/image/403603/free-illustration-image-butterfly-1900s-public-domainFree Image from public domain licenseLarva of Apatura (Emperors). Digitally enhanced from our own publication of Moths and butterflies of the United States… https://www.rawpixel.com/image/403591/free-illustration-image-cocoon-pupa-butterflyFree Image from public domain licensePupae of Sphinx Moth. Digitally enhanced from our own publication of Moths and butterflies of the United States (1900) by… https://www.rawpixel.com/image/403583/free-illustration-image-cocoon-butterflyFree Image from public domain licenseChrysalis of Satyrus (Satyr). Digitally enhanced from our own publication of Moths and butterflies of the United States… https://www.rawpixel.com/image/403590/free-illustration-image-chrysalis-butterfly-cocoonFree Image from public domain licenseInsects Spread on Setting Block. Digitally enhanced from our own publication of Moths and butterflies of the United States… https://www.rawpixel.com/image/403523/free-illustration-image-butterflies-vintage-tools-1900sFree Image from public domain licenseLarva of Mamestra picta (Painted Mamestra Moth Caterpillar). Digitally enhanced from our own publication of Moths and… https://www.rawpixel.com/image/403555/free-illustration-image-antique-insects-art-bugFree Image from public domain licenseLarva of Saturnia io (Emperor Moth). Digitally enhanced from our own publication of Moths and butterflies of the United… https://www.rawpixel.com/image/403566/free-illustration-image-butterflies-antique-insectsFree Image from public domain licenseLarvae of geometrid moths. Digitally enhanced from our own publication of Moths and butterflies of the United States (1900)… https://www.rawpixel.com/image/403541/free-illustration-image-vintage-bug-1900s-public-domainFree Image from public domain licenseLarva of Philampelus pandorus (Pandora Sphinx Moth). Digitally enhanced from our own publication of Moths and butterflies… https://www.rawpixel.com/image/403585/free-illustration-image-art-1900s-public-domainFree Image from public domain licenseLarva and chrysalis of Papilio philenor (Blue Swallowtail). Digitally enhanced from our own publication of Moths and… https://www.rawpixel.com/image/403602/free-illustration-image-caterpillar-vintage-bug-insectFree Image from public domain licenseLarva of Papilio troilus (Spicebush Swallowtail). Digitally enhanced from our own publication of Moths and butterflies of… https://www.rawpixel.com/image/403600/free-illustration-image-butterflies-art-animalsFree Image from public domain licenseLarva of Edema albifrons (Red-humped Oakworm Moth). Digitally enhanced from our own publication of Moths and butterflies of… https://www.rawpixel.com/image/403605/free-illustration-image-red-butterfly-1900s-public-domainFree Image from public domain licenseLarva of Hellophila unipuncta (True Armyworm Moth). Digitally enhanced from our own publication of Moths and butterflies of… https://www.rawpixel.com/image/403552/free-illustration-image-butterflies-1900s-public-domainFree Image from public domain licenseLarva of Hesperidae - Silver-spotted Skipper (Eudamus tityrus). Digitally enhanced from our own publication of Moths and… https://www.rawpixel.com/image/403607/free-illustration-image-animals-1900s-public-domainFree Image from public domain licenseCaterpillar of Butterfly. Digitally enhanced from our own publication of Moths and butterflies of the United States (1900)… https://www.rawpixel.com/image/403512/free-illustration-image-caterpillar-butterfly-insectsFree Image from public domain licenseEurasian magpie (PICA PICA) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/326231/free-illustration-image-magpie-bird-picaFree Image from public domain licenseWhooper Swan (Cygnus cygnus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/325774/free-illustration-image-swan-von-wright-brothers-birdsFree Image from public domain licenseGolden Eagle (Aquila chrysaetos) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version… https://www.rawpixel.com/image/325726/free-illustration-image-eagle-von-wright-brothers-birdFree Image from public domain licenseMerlin female (Falco aesalon) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/325770/free-illustration-image-falcon-von-wright-brothers-birds-drawingFree Image from public domain licensePicus canus ♂ illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of Svenska… https://www.rawpixel.com/image/325696/free-illustration-image-woodpecker-von-wright-brothers-birdFree Image from public domain licenseGray heron (Ardea cinerea) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/325756/free-illustration-image-ardea-cinerea-von-wright-brothers-birdsFree Image from public domain licenseStrix uralensis ♀ illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of Svenska… https://www.rawpixel.com/image/325653/free-illustration-image-owl-bird-abstractFree Image from public domain licenseSnowy owl (Nyctea Scandiaca) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/326119/free-illustration-image-owl-snowy-abstractFree Image from public domain licenseLesser blak-backed gull (Larus fuscus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/326196/free-illustration-image-seagull-gull-von-wright-brothersFree Image from public domain licenseAtlantic puffin (Fratercula arctica) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/326112/free-illustration-image-penguin-puffin-von-wright-brothersFree Image from public domain licenseShelduck (TADORNA TADORNA) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/326201/free-illustration-image-duck-abstract-vintage-animalsFree Image from public domain licenseEuropean roller (CORACIAS GARRULUS) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/326285/free-illustration-image-bird-vintage-abstractFree Image from public domain licensePyrrhula Pyrrhula illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of Svenska… https://www.rawpixel.com/image/325690/free-illustration-image-bird-vintage-von-wright-brothersFree Image from public domain licenseWhite stork ♀ (Ciconia ciconia) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version… https://www.rawpixel.com/image/325799/free-illustration-image-bird-stork-abstractFree Image from public domain licenseGreat spotted woodpecker-male (Dryobates major) illustrated by the von Wright brothers. Digitally enhanced from our own 1929… https://www.rawpixel.com/image/326030/free-illustration-image-birds-woodpecker-von-wright-brothersFree Image from public domain licenseEurasian wren (Nannus troglodytes) - Goldcrest (Regulus regulus) illustrated by the von Wright brothers. Digitally enhanced… https://www.rawpixel.com/image/325880/free-illustration-image-bird-vintageFree Image from public domain licenseEuropean Golden-Plover (charadrius pluvialis apricarius) illustrated by the von Wright brothers. Digitally enhanced from our… https://www.rawpixel.com/image/325814/free-illustration-image-plover-von-wright-brothers-european-goldenFree Image from public domain licenseEuropean roller (CORACIAS GARRULUS) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/325831/free-illustration-image-von-wright-brothers-european-birds-european-rollerFree Image from public domain licenseVelvet Scoter female (Oidemia fusca) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/326283/free-illustration-image-von-wright-brothers-bird-centuryFree Image from public domain licenseGreat cormoran (Phalacrocorax Carbo) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/326327/free-illustration-image-cormorant-von-wright-brothers-greatFree Image from public domain licenseLong-tailed Duck male (Harelda hyemalis) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/325669/free-illustration-image-von-wright-brothers-bird-duckFree Image from public domain licenseAlcedo ispida illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of Svenska… https://www.rawpixel.com/image/325678/free-illustration-image-von-wright-brothers-birdFree Image from public domain licenseUpupa epops illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of Svenska… https://www.rawpixel.com/image/325691/free-illustration-image-von-wright-brothers-bird-upupaFree Image from public domain licenseGreat spotted woodpecker-female ♀ (Dryobates major) illustrated by the von Wright brothers. Digitally enhanced from our own… https://www.rawpixel.com/image/325982/free-illustration-image-von-wright-wright-brothers-birdsFree Image from public domain licenseYoung common house-martin (Hirundo urbica) illustrated by the von Wright brothers. Digitally enhanced from our own 1929… https://www.rawpixel.com/image/326010/free-illustration-image-von-wright-brothers-house-martinFree Image from public domain licenseShort-eared Owl (Asio flammeus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version… https://www.rawpixel.com/image/325927/free-illustration-image-owl-von-wright-brothers-asio-flammeusFree Image from public domain licenseMute Swan male (Cygnus olor) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/325741/free-illustration-image-swan-abstract-birdsFree Image from public domain licenseGreater Scaup, Scaup female (Nyroca marila) illustrated by the von Wright brothers. Digitally enhanced from our own 1929… https://www.rawpixel.com/image/325786/free-illustration-image-duck-von-wright-brothers-birdFree Image from public domain licenseWood Warbler (Phylloscopus sibilatrix) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/325798/free-illustration-image-von-wright-brothers-wright-birdFree Image from public domain licenseChaffinch male (Fringilla coelebs) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/325683/free-illustration-image-von-wright-brothers-fringilla-coelebs-chaffinchFree Image from public domain licenseThrush Nightingale (Luscinia luscinia) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/325693/free-illustration-image-nightingale-thrush-von-wright-brothersFree Image from public domain licenseLesser spotted woodpecker (Dryobates minor) illustrated by the von Wright brothers. Digitally enhanced from our own 1929… https://www.rawpixel.com/image/325961/free-illustration-image-woodpecker-von-wright-brothers-centuryFree Image from public domain licenseStrix aluco (Tawny owl) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/325873/free-illustration-image-owl-strix-aluco-von-wright-brothersFree Image from public domain licenseRedwing-Song thrush (Turdus usicus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/325623/free-illustration-image-thrush-song-von-wright-brothersFree Image from public domain licenseVelvet Scoter male (Oidemia fusca) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/325639/free-illustration-image-von-wright-brothers-bird-1900sFree Image from public domain licenseThree-toed woodpecker (Picoides Tridactylus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929… https://www.rawpixel.com/image/325657/free-illustration-image-von-wright-brothers-birdFree Image from public domain licenseLong-tailed Duck (Harelda hyemalis) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/325667/free-illustration-image-von-wright-brothers-duck-birdFree Image from public domain licenseGreylag Goose (Anser anser) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/325713/free-illustration-image-goose-von-wright-brothers-anserFree Image from public domain licenseFerruginous duck female (Nyroca fuligule) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/325715/free-illustration-image-von-wright-brothers-duck-birdFree Image from public domain licenseCommon chiffchaff (Phylloscopus collybita) illustrated by the von Wright brothers. Digitally enhanced from our own 1929… https://www.rawpixel.com/image/325723/free-illustration-image-von-wright-brothers-chiffchaff-birdFree Image from public domain licenseCommon chiffchaff (Phylloscopus collybita) and House Sparrow female (Passer domesticus) illustrated by the von Wright… https://www.rawpixel.com/image/325731/free-illustration-image-sparrow-von-wright-brothers-passer-domesticusFree Image from public domain licenseNorthern Pintail (Anas(dafila) acuta) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/325743/free-illustration-image-von-wright-brothers-bird-pintailFree Image from public domain licenseRed-crested Pochard (Netta rufina) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio… https://www.rawpixel.com/image/325747/free-illustration-image-von-wright-brothers-bird-red-vintage-public-domainFree Image from public domain licenseRed-footed Falcon female (Falco vespertinus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929… https://www.rawpixel.com/image/325762/free-illustration-image-falco-von-wright-brothers-falconFree Image from public domain licenseParasitic jaeger (Stercorarius parasiticus) illustrated by the von Wright brothers. Digitally enhanced from our own 1929… https://www.rawpixel.com/image/325773/free-illustration-image-von-wright-brothers-scandinavian-1900sFree Image from public domain licenseBarred warbler ♂ (Sylvia nisoria) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version… https://www.rawpixel.com/image/325791/free-illustration-image-von-wright-brothers-sylvia-abstractFree Image from public domain license