Whistling Duck (Dendrocygna arcuata) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881)… https://www.rawpixel.com/image/321354/free-illustration-image-elizabeth-gould-vintage-duckFree Image from public domain licenseEyton's Duck (Leptotarsis Eytoni) illustrated by Elizabeth Gould (1804–1841) for John Gould’s (1804-1881) Birds… https://www.rawpixel.com/image/321361/free-illustration-image-century-gould-illustrationsFree Image from public domain license