any of various large,web-footed birds of the genus Pelecanus of tropical and warm regions,having a lon straight bill from which hangs a distensible pouch of skin for catching and holding fish

• 任一种生活在热带和温带地区的体型较大且蹼足的鹈鹕属鸟，长有长而直且其下垂一用来捕食和盛放鱼的可膨胀皮囊的喙