The male is emerald green with lighter green and some yellow-green underneath. Blue ring around eye, wing coverts and rump are cobalt to violet blue, with underside of flight feathers bluish green. The female is bright green, with emerald green around eyes, forehead and rump. She will have more yellow on the forehead and underneath than the male. Eyes are gray-brown, legs are light pink.
Eyes are dark brown, legs are pink or gray.
A breeding cooperative has been established. The Mexican Parrotlet is slow to breed and only produces a few eggs a year once they have begun - which could take years. They are also confused with the Blue-wing Parrotlet and some variations are still under investigation. F. x. olallae, F. c. crassirostris, F.c. Male has blue on upper- and underwing coverts and rump.