Male-yellow/green forehead, crown, cheeks, and throat; blue line behind eye; blue/grey occiput and nape; green/grey mantle, upper back and lesser wing coverts to scapulars and inside secondary feathers; dark cobalt blue lower back, rump, lesser underwing coverts and axillary feathers; dark blue primary and secondary coverts, outer secondary feathers and bases of inner primary feathers; underparts green washed with grey on flanks and sides of breast. Bill horn in colour. Eye brown. Female-green on wings where blue is in male; blue tinge behind eye and on rump; blue/grey occiput and nape; face less yellow; grey wash on underparts absent.
As in adult female but upperparts green; blue/grey on occiput and nape minimal or absent; juvenile male blue mixed with green on rump.
Calls are high-pitched and rapid. In flock situation this produces a constant chattering.
Content Sources:
Central Pets http://www.centralpets.com/animals/birds/parrots/prt1211.html
Internet Bird Collection http://ibc.hbw.com/ibc/
CITES http://www.cites.org/eng/resources/species.html
BirdLife International http://www.birdlife.org/datazone/species/index.html?action=SpcHTMDetails.asp&sid=1619&m=0
xeno-canto America http://www.xeno-canto.org/index.php
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.
Psittacine Aviculture, Schubot, Clubb and Clubb, 1992.