Some butterflies in the world are considered rare because the population lives a little. Butterfly trade of this type is unlawful. In Indonesia there are some endemic butterflies that are considered rare, some of which are Ornithoptera chimaera (Butterfly or Chimaera Birdwing) are found in Papua, and Trogonoptera brookiana (Trogon's Trogon or Brooke's Birdwing) are found in Borneo, Sumatra, and the Malay peninsula.