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;
A History of British Birds correspondents. Those who provided skins or information are acknowledged. The species are grouped into families such as "Of the Falcon", using the limited and conflicting scientific sources of the time. The families of land birds are further grouped into birds of prey, omnivorous birds, insectivorous birds, and granivorous birds, while the families of water birds are simply listed, with related families side by side. Each species entry begins on a new page; any spaces at the ends of entries are filled with tail-pieces, small, often humorous woodcuts of country life. "British Birds" remains in print, and has attracted the attention