Determining species ecological requirements is essential to achieving sound, science-based management of wildlife populations. As the ancestor of domestic goat ( Capra hircus ), the wild goat ( Capra aegagrus ) is a valuable species which is distributed widely in Iran. However, the ecology of this species is still poorly known. From autumn 2011 to late spring 2012, habitat preferences, age distribution, grouping behaviour and activity of wild goat were studied in Kolah-Qazi National Park, central Iran, over three seasons (rutting season, winter and parturition period). Predetermined observation points and routes were used to record size and composition of the sighted wild goat groups. Habitat variables including slope, aspect (exposure), elevation, percent cover of vegetation, and percent cover of rocks and gravel were recorded wherever animals were detected. This data were compared with similar data collected betwee 1973 and 1976. The obtained results were similar for both periods. Group size varied significantly between seasons and was related to group composition, group activity pattern, elevation, percent cover of vegetation, rock and gravel, and wind speed. Wild goats formed larger mixed groups in autumn and winter, while single sex smaller groups were more frequent in spring. Sex ratio did not significantly differ between the three seasons. No significant relationship was obtained between group composition and slope and aspect Keywords: habitat use, age-sex composition, group size, activity pattern, sex ratio,
