male-in general bright green plumage; frontal band red; thin yellow collar surrounding hindneck; blue/black mantle and back; upper abdomen has orange/yellow band; tail green and widely tipped with white. Bill grey/white. Eye dark brown. Female-in general duller than male; dull green mantle and back with olive/brown tint; pale underwing stripe.
red frontal band absent; pale yellow abdomen. Female-slightly duller than male; pale underwing stripe usually present.
duller than adult female; underwing stripe present, more evident in females.
duller than adult female; frontal band dusky orange, usually disappearing within a few months; pale underwing stripe.
Contact call described as piping; in flight a disyllabic series of notes. Alarm call harsh and metallic. Feeding in trees usually accompanied by soft babbling and chattering, but birds are silent when on the ground.
Content Sources:
Lexicon of Parrots http://www.arndt-verlag.com/projekt/birds_3.cgi?Desc=E122.htm&Pic=122_1.JPG
CITES http://www.cites.org/eng/resources/species.html
Internet Bird Collection http://www.hbw.com/ibc/
Parrots: A Guide to Parrots of the World, Juniper and Parr, 1998.
Parrots of the World, Forshaw and Cooper, 1977.
Parrots of the World, Forshaw, 2006.
Parrots in Aviculture, Low, 1992.
Parrots: Their Care and Breeding, Low, 1986.