All the bats on the island of Taiwan have the same ancestors as the vampire bat, belonging to the Microchiroptera group, characterized as being comparatively small, with small eyes, complex ears and the ability to echolocate. But, as with most of their relatives, they have preserved their culinary habits of more than 2.5 billion years by feeding mainly on insects.
雖然，此地的蝙蝠全數和吸血蝙蝠同宗，屬體型較小的「小翼手目」，但和大部分宗親一樣，仍保留著已有廿五億年傳統的飲食習慣，以昆蟲為主食。