An owl and cuckoo with other birds behind. Engraving by H. Le Roy. https://www.rawpixel.com/image/14008498/owl-and-cuckoo-with-other-birds-behind-engraving-roy Free Image from public domain license
Five examples of different plant stems: a crow-foot, pilewort, onion, cuckoo flower and sheep's fescue plant. Coloured… https://www.rawpixel.com/image/13995384/image-paper-flower-plant Free Image from public domain license
Japanese Cuckoo illustration. Digitally enhanced from our own original edition of Pictorial Monograph of Birds (1885) by… https://www.rawpixel.com/image/434965/free-illustration-image-1800s-public-domain-19th-century Free Image from public domain license
Pheasant-tailed Pigeon (Macropygia Phasianella) illustrated by Elizabeth Gould (1804–1841) for John Gould’s… https://www.rawpixel.com/image/321025/free-illustration-image-pigeon-century-dove Free Image from public domain license
A female cuckoo wrasse from The Natural History of British Fishes (1802) by Edward Donovan. Original from the New York… https://www.rawpixel.com/image/431340/free-illustration-image-water-color-lady-vintage-sea-life-cuckoo-wrasse Free Image from public domain license
Grey Gurnard from The Natural History of British Fishes (1802) by Edward Donovan. Original from the New York Public Library.… https://www.rawpixel.com/image/431307/free-illustration-image-natural-history-mediterranean-sea-1800s-public-domain Free Image from public domain license
White-shouldered cuckooshrike (Campephaga humeralis) illustrated by Elizabeth Gould (1804–1841) for John Gould’s… https://www.rawpixel.com/image/321254/free-illustration-image-elizabeth-gould-bird-white-shouldered-cuckoo-public-domain Free Image from public domain license
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