Green-rumped parrotlets are found in tropical South America, from Caribbean regions of Colombia, Venezuela and Trinidad south and east to the Guianas and Brazil, on the lower Amazon River.
It has been introduced in Jamaica, Curaçao, Barbados and Tobago, and was not recorded on Trinidad prior to 1916.
They are the only parrotlet species to occur in the Caribbean.

Green-rumped parrotlets are fairly common in open, semi-arid habitat and are found residing in dry scrubland, deciduous woodland, gallery forest, farmland, forest edges, and deforested areas throughout their range.
While they are non-migratory, they may wander locally to locate sources of food.
They are not found at altitudes greater than 1,800 metres (5,900 ft) above sea level.
Green-rumped parrotlets are found in tropical South America, from Caribbean regions of Colombia, Venezuela and Trinidad south and east to the Guianas and Brazil, on the lower Amazon River. It has been introduced in Jamaica, Curaçao, Barbados and Tobago, and was not recorded on Trinidad prior to 1916. They are the only parrotlet species to occur in the Caribbean.
Green-rumped parrotlets are fairly common in open, semi-arid habitat and are found residing in dry scrubland, deciduous woodland, gallery forest, farmland, forest edges, and deforested areas throughout their range. While they are non-migratory, they may wander locally to locate sources of food. They are not found at altitudes greater than 1,800 metres (5,900 ft) above sea level.
Green-rumped parrotlet