Owing to long-term separation in living environments, the many subtribes and subclans are quite different in terms of habits, language and even ethnic identity. Back in the pre-colonial period, some were even mortal enemies, and mutual head-hunting prevailed.
這許多亞族及亞群，彼此的生活習慣、語言、甚至族群意識等，由於長期居住環境的阻隔，有著很大的歧異，在部落時期甚至還相互獵首、互為仇敵。