Black-bellied Darter from Birds of America (1827) by John James Audubon, etched by William Home Lizars. Original from… https://www.rawpixel.com/image/277326/free-illustration-image-audubon-bird-birds-americaFree Image from public domain licenseSlangenhalsvogel (Anhinga) (1596 - 1610) by Anselmus Boëtius de Boodt and Elias Verhulst https://www.rawpixel.com/image/13743260/image-paper-cartoon-artFree Image from public domain licenseNew Holland Darter (Plotus Novae-Hollandiae) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804… https://www.rawpixel.com/image/321592/free-illustration-image-australia-birds-australia-gouldFree Image from public domain license