高蹺(Himantopus himantopus)度冬族群在八掌溪嘉義市段與台灣沿海各主要棲地數??
台灣地區高蹺?(Himantopus himantopus)的度冬族群出現月份是九月中旬至隔年四月,棲息地主要是在台灣西部沿海之鹽田、魚塭、沙質河口及少數內陸河川,而 1994年成立的台南四草野生動物保護區更是其在台灣的主要繁殖區。 本研究主要從2001年3月~2003年10月進行八掌溪嘉義市段高蹺?族群數量的調查,在 2001.12 月計數到最高數量約 1200 隻,2002.10 月有 1540 隻,連續兩個年度都是全國最高數量,分析環境因子及食物來源皆優於其他各沿海棲地。 在 2003 年 5 月至 9 月調查嘉義沿海高蹺?繁殖配對情形,在 5 月 24 日發現鰲鼓溼地巢數 25 個、幼鳥 14 隻,布袋七區鹽田巢數 9 個,顯示除了台南四草繁殖區外還有其他的繁殖地。 The winter residents of Black- winged Stilts in Taiwan appear in mid-September to next April. Their main habitats are the salt pans, water ponds, sandy river mouths and few inland rivers in western Taiwan. Furthermore, the “Taina Szu-Tao (四草) Wildlife Sanctuary” established in 1994 is their major breeding area. This research is the investigation of the amount of Black- winged Stilt in Pajhang River(八掌溪), Chia-yi city(嘉義市) in 2001, Mar.~ 2003, Oct. The highest amount in 2001, Dec. is about 1200 and in 2002,Oct. is 1540. The amounts of these continuous two years are the highest in Taiwan. To analyze the reasons, the environment and food sources are better than other coastal habitats. In 2003, from May to September, the investigation of mating situation of Black-winged Stilt in Chia-yi coastal areas, twenty five nests and fourteen young birds in Ao-Ku(鰲鼓) wetland; nine nests in Pu-dai (布袋) seven salt pans are found on May 24th. It shows that there are other breeding areas except the breeding areas in Tainan Szu-Tao.