The Birds of Australia London, Witherby & Co, 1910-1927. Australia Bibliography Birds Birds Australia Pictorial works Bird Australia Mathews, Gregory Ornithology, The illustration depicts two birds perched on a leafy branch. The upper bird, known as the Cacomantis pyrrhocephalus, features a sleek, dark plumage with striking details, while the lower bird, identified as the square-tailed cuckoo, displays intricate patterns and markings in its feathers. Surrounding the birds are delicate leaves and branches that enhance the natural setting. The artwork captures the elegance and character of these avian species, highlighting their distinct features and harmonious presence in their habitat.