Ararinha-azul, the Spix’s Macaw (Cyanopsitta spixii) is the only member of the parrot genus Cyanopsitta. It is 55–57 cm long. It is various shades of blue, including a pale blue head, pale blue underparts, and vivid blue upper parts, wings, and tail. They are critically endangered, possibly extinct in the wild. It is a species that only occurs in north eastern Brazil, in the Caatinga biome and wetlands of the interior, where temporary streams allow for the existence of taller trees, is typical of the region of the San Francisco River. It has a very restricted natural habitat due to its dependence on the Ipê-amarelo-do-cerrado (Tabebuia aurea) tree for nesting.