At a high country sheep station in Central Canterbury a study was made of the grazing behaviour of sheep. For three summers, between approximately late October and early April, the distribution of an average of 250 dry sheep grazing 590 ha of a 6200 ha summer range was recorded. During the third season, levels of dry matter and water contents of available inter-tussock vegetation were measured, the visual abundance of plant species in cut samples assessed, and diet determined using faecal cuticle analysis. Digestibilities of some available dry matter samples and selected plant species were also measured. Sheep activities were monitored.