Porphyrio (melanotus) porphyrio (Rallidae) by Herbert Guthrie Smith. https://www.rawpixel.com/image/13029040/porphyrio-melanotus-porphyrio-rallidae-herbert-guthrie-smithFree Image from public domain licenseVintage illustration png, bird, transparent background https://www.rawpixel.com/image/9344966/png-art-vintageView licensePurperkoet (Porphyrio porphyrio) (1596 - 1610) by Anselmus Boëtius de Boodt and Elias Verhulst https://www.rawpixel.com/image/13743255/image-paper-cartoon-artFree Image from public domain licenseVintage illustration of a roseate spoonbill and a swamphen https://www.rawpixel.com/image/523601/free-illustration-vector-vintage-hen-animalView licenseVintage illustration of a roseate spoonbill and a swamphen https://www.rawpixel.com/image/523634/premium-illustration-psd-spoonbill-vintage-animals-animalView licenseVintage illustration of a swamphen https://www.rawpixel.com/image/523598/free-illustration-vector-bird-old-vintage-illustrations-animalsView licensePurple Gallinule from Birds of America (1827) by John James Audubon, etched by William Home Lizars. Original from University… https://www.rawpixel.com/image/277176/free-illustration-image-audubon-birds-america-public-domain-birdFree Image from public domain licenseThe Pukeko, or New Zealand Swamp Hen is a member of the rail family, and is similar to other species found all over the… https://www.rawpixel.com/image/4022415/photo-image-bird-animalFree Image from public domain licenseEx Aeliani historia per Petrum Gyllium latini facti, itemque ex Porphyrio, Heliodoro, Oppiano, tum eodem Gyllio luculentis… https://www.rawpixel.com/image/13991690/image-paper-cartoon-bookFree Image from public domain licensePorphyrio (melanotus) porphyrio (Rallidae) by Herbert Guthrie Smith. https://www.rawpixel.com/image/13030990/porphyrio-melanotus-porphyrio-rallidae-herbert-guthrie-smithFree Image from public domain licensezure-breasted Porphyrio (Porphyrio bellus) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804… https://www.rawpixel.com/image/321326/free-illustration-image-vintage-porphyrio-porphyrio-australiaFree Image from public domain licenseBlack-backed Porphyrio (Porphyrio melanotus) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804… https://www.rawpixel.com/image/321325/free-illustration-image-birds-australia-gould-centuryFree Image from public domain license