The Māori arrived sometime before AD 1300, and all moa genera were soon driven to extinction by hunting and, to a lesser extent, by habitat reduction due to forest clearance. By AD 1445, all moa had become extinct, along with the Haast's eagle which had relied on them for food. Recent research using carbon-14 dating of middens strongly suggests that the events leading to extinction took less than a hundred years,[46] rather than a period of exploitation lasting several hundred years, which is what had previously been hypothesized.