But usually even their pellets and droppings are hard to find, for whenever it rains, Taiwan's streams and rivers rise quickly, washing away the traces which tawny fish owls sometimes leave behind them on stream beds.
但常常連排泄物都難找，台灣溪流一遇雨即暴漲，溪床上黃魚鴞偶然留下的痕跡，也隨著被淹沒而無影無蹤。