Once, picking his way up the Shakatang River, Sun discovered a tawny fish owl with a range extending four or five kilometers and spanning 10 or more mountaintops.
他曾由沙卡礑溪上游一路追蹤，發現黃魚鴞領域推進到五、六公里遠，峰迴路轉十幾個山頭。