On any Sunday visitors to the Tamsui River, especially around the levees, or to the lushly forested mountain slopes of Wulai can often see a group of rather unusual sightseers.
星期天的早上，如果你散步在淡水河和基隆河會流處的堤防，也許會碰上一行十數人，胸前掛著望遠鏡，東張西望，常常突然停下，嘰嘰咕咕地交換意見，然後拿起望遠鏡，對著水面、草叢掃瞄。