The waterfowl species with their long legs and extended bills find a rich feeding environment in the aquatic regions of the island. Ocean coastline, inland rivers and rich delta areas provide bountiful catches of shellfish and insects. These wintering grounds also provide a haven for birds who can dive and swim in relative safety.
大部份有長腳、長嘴，喜歡啄食淺水或泥灘下的蟲類、貝類，或者可以游泳、潛水覓食，因此群集台灣東西兩岸的河口沙洲。