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;
British Birds (magazine) possible to bind 19 into one volume. In 2007 a DVD-ROM disk containing the first 100 years' worth of content (Vols 1-100) was released in conjunction with BirdGuides Ltd. Subsequent volumes are available as paid-for updates. In 2010, the magazine launched a blog, Facebook group and a Twitter account. From October 2011, the magazine's first 100 years' of back issues are available on-line, free. More recent issues are available to subscribers to the print edition. British Birds (magazine) British Birds is a monthly ornithology magazine that was established in 1907. It is now published by BB 2000 Ltd, which is