Comprehensive monograph on the natural history and biology of the Ratites and Tinamous, including the ostriches, emus, cassowaries and kiwis. Each of the 55 species is described in detail, with maps of their presently known distribution, accounts of their food and nesting habits, calls, field identification, and habitat and relationship with humans, including farming. Also reviewed are the scientific studies that have been made of their ecology, behaviour, physiology, husbandry, evolution, mythology and conservation.