Bittern (Botaurus stellaris) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/325755/free-illustration-image-von-wright-brothers-wright-von-birdFree Image from public domain licensePng sticker bittern bird hand drawn https://www.rawpixel.com/image/2634612/free-illustration-png-bird-botaurus-stellaris-animalView licenseRoerdomp (Botaurus stellaris) (1596 - 1610) by Anselmus Boëtius de Boodt, Elias Verhulst and Conrad Gessner https://www.rawpixel.com/image/13743249/image-paper-watercolor-animalFree Image from public domain licenseRoerdomp (Botaurus stellaris) (1596 - 1610) by Anselmus Boëtius de Boodt and Elias Verhulst https://www.rawpixel.com/image/13741659/image-paper-cartoon-artFree Image from public domain licenseAmerican Bittern from Birds of America (1827) by John James Audubon, etched by William Home Lizars. Original from University… https://www.rawpixel.com/image/277298/free-illustration-image-audubon-birds-america-public-domainFree Image from public domain licenseAustralian Bittern (Botaurus Australis) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881)… https://www.rawpixel.com/image/321671/free-illustration-image-century-gould-vintageFree Image from public domain licenseBittern (Botaurus stellaris) illustrated by the von Wright brothers. Digitally enhanced from our own 1929 folio version of… https://www.rawpixel.com/image/325701/premium-illustration-psd-botaurus-stellaris-america-ancientView license