Hsieh Ching-huang, a middle school teacher from Puli and a founder of the Wild Bird Society of the ROC, points out that the mouth of the swiftlet is short and broad, so it is an expert at scooping up insects; it must eat more than half its body weight in bugs every day.
鳥會成員埔里國中老師謝景煌就說，金絲燕嘴型短而寬，是捕食昆蟲的高手，一天必須吃掉自己一半以上體重的昆蟲。