The Arini tribe of the neotropical parrots is a monophyletic clade of macaws and parakeets characterized by colorful plumage and long, tapering tails. They occur throughout Mexico, Central America, and South America, the Caribbean and the southern United States. One genus and several species are extinct; another genus is extinct in the wild. Two species are known only through subfossil remains. About a dozen hypothetical extinct species have been described, native to the Caribbean area. Among the Arini are some of the rarest birds in the world, such as Spix's macaw, which is extinct in the wild – fewer than 100 specimens survive in captivity. It also contains the largest flighted parrot in the world, the hyacinth macaw. Some species, such as the blue-and-yellow macaw and sun conure are popular pet parrots.