The Apodidae (of which the swiftlet is one genus) are widely distributed. I have had people from many places, like the Philippines and even East Africa, bring me other types of bird's nests faintly similar to the swiftlet nests that are now consumed; they want me to confirm their quality and set a price for them so they can export them.
而雨燕的分佈很廣，許多地方如菲律賓、甚至東非都有人將類似食用燕窩的他種燕窩採來，要我鑑定品質，為他們開個價，好出口。