Races including nominate:
|18cm (7 in)
||108-126g (3.8-4.4 oz)
six: P.d. desmarestii, P.d. intermedia, P.d. occidentalis, P.d. blythii, P.d. godmani, P.d. cervicalis
Colourization Adult: P.d. desmarestii:
both adults orange/red lores and forehead, merging to orange/yellow on crown and nape; nuchal collar blue; green hindneck; blue spot below eye; green cheeks and ear coverts, tipped with bronze/yellow; bright paler green at tips of elongated feathers; upper breast has pale blue stripe, bordered below by orange/red stripe; yellow/orange inner wing coverts edged with yellow/orange; underwing stripes wide and off-white/yellow. Bill grey/black. Eye dark brown.
both adults as in desmarestii,
but much deeper orange crown and nape; green cheeks and ear coverts with orange/yellow tips to a few feathers; blue nuchal collar missing or minimal.
both adults deep golden/yellow cheeks and throat, turning to bright yellow on elongated ear coverts; paler blue below eye and more green; blue collar absent.
both adults as in occidentalis,
but with brighter orange/yellow cheeks; blue below eye absent.
male-blue on occiput and below eye absent; orange/red crown and nape with yellow stripe on hindneck; bright yellow cheeks and ear coverts; pale blue band across breast more extensive, but orange/red band below absent or minimal. Female-green hindneck, yellow band absent.
both adults as in godmani,
but with blue nape and hindneck; breast band darker blue; orange/buff tinge to lower breast and abdomen.
Colourization Juvenile: P.d. desmarestii:
as in adults, but with dull yellow crown.
as in adults.
as in adults.
as in adults but with blue below eye.
as in adult female.
green crown and nape.
Calls are described as high-pitched and thin, with down slurring contact call. Also chattering and clinking notes, and oft-repeated chet-chet
notes at the nest.
Recent Academic Research: Google Scholar - search results
Lexicon of Parrots http://www.arndt-verlag.com/projekt/birds_3.cgi?Desc=E085.htm&Pic=085_1.JPG
BirdLife International http://www.birdlife.org/datazone/species/index.html?action=SpcHTMDetails.asp&sid=1421&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, 2006.
Parrots in Aviculture, Low, 1992.
Parrots: Their Care and Breeding, Low, 1986.