Both adults forehead, lores and crown dark purple, paler and more blue in the female with hindcrown washed green; elongated feathers of nape yellow/green, widely tipped with red; wings and back green, becoming yellow/green on rump; cheeks and ear coverts to throat and upper abdomen red; thighs and lower abdomen dark purple. Bill dark orange. Eye orange/red.
As in adult but with breast and upper abdomen faintly barred blue/purple; hindcrown and occiput dull purple, the feathers margined green red at tips minimal or absent. Bill brown. Eye pale brown.
Noted as shrill and screechy two-notes, the second note drawn out more than the first. Single shriek sometimes uttered while perched.
Content Sources:
Central Pets
CITES http://www.cites.org/eng/resources/species.html
BirdLife International http://www.birdlife.org/datazone/species/index.html?action=SpcHTMDetails.asp&sid=1363&m=0
Internet Bird Collection http://ibc.lynxeds.com/
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.