These Formosan rock monkeys live on the back side of the mountain, and come foraging only around dawn and dusk. Sometimes traces of them can be found around the rock wall at the entrance to Chilan, and there are also marks of monkey business on the rocks stretched out alongside the northern cross-island highway.
這一群獼猴就住在後山，清晨或黃昏會下山來覓食，有時在棲蘭入口右側岩壁附近，可見到它們的蹤跡，沿北橫公路兩旁山壁，也有獼猴活動的身影。