With the swiftlets consuming a rich diet of shrimps and small fishes in addition to insects , these coastal bird ' s nests produced are especially higher in natural proteins and minerals 由于金丝燕除了昆虫之外，还以丰盛的小虾和小鱼为食物，因此，这些沿海生产的燕窝其蛋白质和矿物质方面特别高。
2.
The nests of certain swiftlet species , made largely or wholly from saliva , have been esteemed in chinese cuisine for hundreds of years , being regarded as having a wide range of tonic and medicinal values ; trade records go back to at least the seventeenth century in indonesia 燕窝主要或全部由燕子的唾液造成，是中国数百年来传诵的珍品，认为具有多元化的补身及药疗功效。燕窝的贸易纪录可追溯至十七世纪印尼的燕窝买卖。
