A crimson topaz bird (Topaza pella). Colour lithograph, ca. 1875. https://www.rawpixel.com/image/13965895/crimson-topaz-bird-topaza-pella-colour-lithograph-ca-1875Free Image from public domain license
Birds of the world An illustrated natural history in popular style with 100 candid photos : A New York City, W.P.A. Federal… https://www.rawpixel.com/image/8631745/image-art-vintage-booksFree Image from public domain license
The Banded Aracari Toucan, from the Birds of the Tropics series (N5) for Allen & Ginter Cigarettes Brands https://www.rawpixel.com/image/9085785/image-art-vintage-cigarettesFree Image from public domain license
A bullfinch (Pyrrhula vulgaris) and goldfinch (Carduelis elegans) by a nest of eggs. Colour lithograph, ca. 1875. https://www.rawpixel.com/image/13951975/image-plant-tree-artFree Image from public domain license
Toco Toucan, from the Birds of the Tropics series (N5) for Allen & Ginter Cigarettes Brands https://www.rawpixel.com/image/9085838/image-art-vintage-cigarettesFree Image from public domain license
Free fiery-billed aracari on tree branch image, public domain animal CC0 photo. https://www.rawpixel.com/image/5925480/photo-image-public-domain-tree-plantFree Image from public domain license
The angel Ezrael nursing Adam. Gouache painting by an Persian artist . https://www.rawpixel.com/image/13965849/the-angel-ezrael-nursing-adam-gouache-painting-persian-artistFree Image from public domain license
Toco Toucan, from Birds of the Tropics series (N38) for Allen & Ginter Cigarettes issued by Allen & Ginter, George S. Harris… https://www.rawpixel.com/image/9611107/image-ephemera-allen-and-ginter-toucan-birdFree Image from public domain license
Class II, Order I, Accipitres. Family Falconidae. Marsh Harrier... by Eugene S M Haines https://www.rawpixel.com/image/14257591/photo-image-frame-wood-artFree Image from public domain license