Part 1: Owls and humans, John Sparks; the origins of owls, C.A. Walker; what makes an owl, Philip Burton. Part 2: Barn and bay owls - Tyto, Phodilus, Michael Everett, et al; fishing owls, eagle owls and the snowy owl - Ketupa, Scotopelia, Bubo, Nyctea, Michael Ogden; scops and screech owls - Otus, Ptilopsis, Lophostrix, G.P.Hekstra; wood owls - Pulsatrix, Ciccaba, Strix, Asio, Heimo Mikkola; hawk owls - Ninox, Sceloglaux, Uroglaux, Nesasio, Surnia, Colin Harrison; little pygmy and elf owls - Athene, Speotyto, Micrathene, Aegolius, Glaucidium, Xenoglaux, Pseudoscops, Howard Ginn; conservation, Ronald Murton; owl pellets, David Glue; owl voices, Wouter van der Weijden, Michael Everett.