Subspecies: There are 3 subspecies.
Myiopsitta m. calita - Mendoza Grey Breasted Parakeet
They are smaller and the bluish tinge on the forehead and crown is non-existent. They have a yellowish-green abdomen that has a bluish tinge to it. They have a yellow breast band and the bill is smaller. Around 27 cm ( 10.5" ) in length.
Distribution is in Western Argentina from Salta, Santiago de Estero and western Cordola S. to Mendoza and la Pampa.
Myiopsitta m. cotorra - Paraguayan Grey Breasted Parakeet
They have a much brighter green to the whole area of the head. The breast band is grey. Around 27 cm ( 10.5" ) in length.
Distribution is in SE Bolivia in the province of Tirija and SW Mato Grosso, Brazil, S. Paraguay and Argentina in the provinces of Formosa and Chaco.
Myiopsitta m. luschsi - Bolivian Grey Breasted Parakeet
They have the forehead and the crown a whitish grey. The throat and breast is a whitish pale grey without the edging. The band to the abdomen is yellowish. Around 30 cm ( 12" ) in length.
Distribution is in Bolivia in the province of Cochabamba.