sentences:  It has been suggested that the reddish-bellied parakeet should include the blaze-winged parakeet ("P. devillei") as a subspecies based on intermediate specimens from Paraguay.But such hybrids are not common in the wild and the two populations generally maintain their integrity; recent sources are undecided on whether to treat them as one species or two.These birds range from 25 to 28 cm (10–11 in), and are primarily green, with a maroon patch on the belly, a "scaly" yellow-green-barred breast and sides of neck, a whitish ear-patch often tinged brown, and a maroon undertail.