After a survey around the island lasting over two weeks, Torii and the Japanese soldiers who accompanied him noted down records about the Yami (also known as the Tao): "Socioeconomically, they live a primitive communal lifestyle based on barter, raising goats and chickens, and small wild pigs.
經過兩個多禮拜的環島踏查，鳥居龍藏及其隨行日軍留下對雅美人的紀錄：「社會經濟以物易物的共產共營原始生活方式，養山羊和雞，及小型野豬（袖珍蘭嶼豬）。