Bird of prey and may be raised to an order of their own, Cathartiiformes. The secretary bird and/or osprey are sometimes listed as subfamilies of Acciptridae: Sagittariinae and Pandioninae, respectively. Australia's letter-winged kite is a member of the family Accipitridae, although it is a nocturnal bird. The nocturnal birds of prey – the owls – are classified separately as members of two extant families of the order Strigiformes: Below is a simplified phylogeny of Telluraves which is the clade where the birds of prey belong to along with passerines and several near-passerine lineages. The orders in bold text are birds of prey orders;
Human uses of birds birds, while John James Audubon's enormous and impressive images of birds in his 1827–1838 "Birds of America" are among the most admired by art critics and by collectors: early editions fetch among the highest prices paid for any printed books. The ornithologist John Gould's bird illustrations, in books such as "A Century of Birds hitherto unfigured from the Himalaya Mountains" (1830–1833) with 80 plates, and his 7-volume "The Birds of Australia" (1840–1848) with 600 plates, related directly to his research, were both beautiful and scientifically useful. Birds are popular characters in children's books, which are often handsomely illustrated. Beatrix Potter's