fierce battles for the attention of unmated females. An impregnated female undergoes a gestation period of 170 days, after which a single kid is usually born in May or early June. On rare occasions, twins may be born. If a mother is killed, other females in the herd may try to raise the young. The kid is weaned at six months of age and is fully grown by one year of age. However, the kids do not reach sexual maturity until they are three to four years old, although some females may mate at as early two years old. At sexual maturity, young males are forced out of their mother's herds by dominant males (who sometimes kill them), and then wander somewhat nomadically until they can establish themselves as mature breeding specimens at eight to nine years of age. Chamois eat various types of vegetation, including highland grasses and herbs during the summer and conifers, barks and needles from trees in winter. Primarily diurnal in activity, they often rest around mid-day and may actively forage during moonlit nights. Chamois can reach an age of 22 years in captivity, although the average recorded age in the wild ranges from 15 to 17 years. Common causes of mortality can include avalanches, epidemics and predation. At present, humans are the main predator of chamois. In the past, the principal predators were Eurasian lynxes, Persian leopards and gray wolves; with some predation possibly by brown bears and golden eagles. Chamois usually use speed and stealthy evasion to escape predators and can run at and can jump vertically into the air or over a distance of . Distribution and habitat The chamois is native to the Pyrenees, the mountains of south and central Europe, Turkey, and the Caucasus. It lives in precipitous, rugged, rocky terrain at moderately high elevations of up to at least . In Europe, the chamois spends the summer months in alpine meadows above the tree line, but moves to elevations of around to spend the winter in pine-dominated forests. In New Zealand Alpine chamois arrived in New Zealand in 1907 as a gift from the Austrian Emperor, Franz Joseph I in exchange for specimens of living ferns, rare birds and lizards. Mr Albert E.L. Bertling, formerly head keeper of the Zoological Society's Gardens, Regents Park, London, accepted an invitation from the New Zealand Government to deliver a consignment of chamois (two