Returning to old haunts But in fact Sun's first successes were thanks to his work in former years. Seven or eight years ago, when the Taroko National Park was set up, Sun Yuan-hsun assisted in a birds 'nest survey there. Early this year he went back, but with another purpose: he remembered that along the Shakatang River, a tributary of the Liwu River, he had seen tawny fish owls.
七、八年前，太魯閣國家公園成立時，孫元勳曾支援做鳥相調查，今年初他舊地重遊，但已另有目的﹘﹘他記得過去曾在立霧溪支流沙卡礑溪發現過黃魚鴞。