The kakapo (Strigops habroptila) is one of the most distinct parrots in the world, as it is flightless and nocturnal. The bird is gigantic and heavy, weighing about 8 pounds. The bird resides in New Zealand and it listed as critically endangered. A long period of isolation in the islands of New Zealand caused the bird to develop a high level of adaptation, and it is especially vulnerable to extinction. Deforestation and introduction of predators have caused the numbers of the species to decrease rapidly. The bird is on IUCN red list as threatened species and the status as critically endangered.