Male-body colour in general yellow/green; head deep red in colour, washed with blue/purple on hindcrown to nape and lower cheeks; black chin strap and wide stripe across lower cheeks, extending as narrow line round hindneck and bordered below by broad blue/green collar; dark red spot on inner median wing coverts; long centre tail feathers deep blue tipped with white, the side tail feathers yellow/green tipped with yellow. Upper mandible orange/yellow, lower brown/black. Eye yellow/white. Female-dull blue/grey head; variable yellow collar replacing black marks present in male; red shoulder spot absent. Upper mandible pale yellow, lower grey.
As in female but with green head, pale orange frontal band; short tail. Bill yellow. Red shoulder spot absent. Eye grey.
Flight call distinctive: toowinck-toowinck. More musical than ring-necked. Male song complicated; consists of sequence of rising and falling notes. Chattering and rapid shrill notes reported. Alarm calls scolding.
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=1535&m=0
Internet Bird Collection http://ibc.lynxeds.com/
xeno-canto Asia 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, 1989.
Parrots of the World, Forshaw, 2006.
Parrots in Aviculture, Low, 1992.
Psittacine Aviculture, Schubot, Clubb and Clubb, 1992.
Encyclopedia of Caged and Aviary Birds, Alderton, 2002.