Cassell's book of birds, Petter and Galpin, 1875, birds, Tauraco persa, Guinea turaco, Tauraco macrorhynchus, yellow-billed turaco, The illustration features a vibrant bird known as the Purple Crested Coquatrix, showcasing its striking green plumage complemented by a deep red underwing. Perched gracefully on a branch, its intricate detailing reveals a soft, rounded crown and a slightly curved beak. The bird's tail is elongated, adding to its elegant appearance, while delicate leaves surround the branch, enhancing the natural setting. The depiction emphasizes the bird's distinctive coloration and delicate features, illustrating the beauty of this avian species in its habitat.