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The Blue-backed Parrot is less common than the Blue-naped Parrot (which is near-threatened) but is not considered in danger.
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Species Profile
Genus:Tanygnathus
Species:sumatranus
| Size: |
Adult Weight: |
| 32cm (12.5 in) |
230-330g (8-11.5 oz) |
Races including nominate:six:
T.s. sumatranus, T.s. sangirensis, T.s. burbidgii, T.s. everetti, T.s. duponti, T.s. freeri
Colourization Adult: Large green parrot, plainly coloured, lacking markings.
T.s. sumatranus: both adults-blue rump and lower back; lesser and primary coverts green, marked with blue. Red bill in male, white in female. Eye yellow.
T.s. sangirensis: both adults-as in
sumatranus, but more blue on bend of wing and lesser wing coverts.
T.s. burbidgii: both adults-deep blue rump and lower back.
T.s. everetti: both adults-as in
burbidgii but head darker green; mantle edged dark blue; rump and lower back darker blue. Eye red.
T.s. duponti: both adults-as in
everetti but more yellow neck in a noticeable collar.
T.s. freeri: both adults-as in
everetti but more yellow in general; paler blue on mantle.
Colourization Juvenile: As in adults.
Call: Calls described as loud and barking; also disyllabic call followed by upslurred, nasal screeching note; musical quavering shriek and single, nasal-sounding squawk. While perched gives single loud notes.
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Recent Academic Research: Google Scholar - search results
Content Sources:
The Tanygnathus Society http://www.thetanygnathussociety.org/
Lexicon of Parrots http://www.arndt-verlag.com/projekt/birds_3.cgi?Desc=E105.htm&Pic=105_1.JPG
BirdLife International http://www.birdlife.org/datazone/species/index.html?action=SpcHTMDetails.asp&sid=1444&m=0
CITES http://www.cites.org/eng/resources/species.html
xeno-canto Asia http://www.xeno-canto.org/index.php
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, 1989.
Parrots of the World, Forshaw, 2006.
Parrots in Aviculture, Low, 1992.