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Blue-backed Parrot

 (Tanygnathus sumatranus)

Also known as: Muller's Parrot, Azure-rumped Parrot

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Blue-backed Parrot
© Chris | Wikimedia Commons

Academic Research

Related publications: Tanygnathus sumatranus

Species Profile

Genus: Tanygnathus | Species: sumatranus

Size:

32cm (12.5 in)

Weight:

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

Colour 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.

Colour 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.

Listen Now

Video Links:

Video 1 | Video 2

More Information:

Avibase
Handbook of the Birds of the World

Content Sources:

CITES
Lexicon of Parrots
BirdLife International
Internet Bird Collection
The Tanygnathus Society
Parrots: A Guide to Parrots of the World, Juniper and Parr, 1998
ML Media Collection Catalogue 32954, Azure-rumped Parrot, Tanygnathus sumatranus, van den Berg, Arnoud, Sulawesi Tengah, Indonesia, Aug. 10 1984, Cornell Lab of Ornithology. Site
Parrots of the World, Forshaw and Cooper, 1977, 1989. 2010 edition
Parrots of the World, Forshaw, 2006.
Parrots in Aviculture, Low, 1992.

Click photo to visit gallery

Blue-backed Parrot
© Chris | Wikimedia Commons

Academic Research

Related publications: Tanygnathus sumatranus

Species Care

Captive Status:

Uncommon

Longevity:

Not recorded.

Housing:

Walk-in aviary or enclosure, minimum length 3m (9.8 ft).

Diet:

Mix of small seeds: canary, oats, safflower; spray millet; limited sunflower seed, dry, soaked or sprouted; sprouted mung or other beans, cooked butterbeans or lentils; boiled corn; fresh green leaves (Swiss chard, lettuce, sowthistle, dandelion, chickweed; vegetables including carrot, celery, squash or zucchini, green beans or peas in the pod; fruit including apple, orange, pear, cactus fruits and bananas; nuts such as walnuts, hazelnuts, pecans and roasted peanuts; complete pellet.

Enrichment:

Bathing, parrot play gyms, large parrot toys and safe chewables.

Nest Box Size:

10" x 10" x 22" (25.4cm x 25.4cm x 55.9cm) vertical box.

Clutch Size:

2 to 3

Incubation Time:

25 days

Fledging Age:

9 weeks

Hatch Weight:

Not recorded.

Peak Weight:

Not recorded.

Weaning Weight:

Not recorded.

Specialist Club:

The Tanygnathus Society

Click photo to visit gallery

Blue-backed Parrot
© Chris | Wikimedia Commons

Academic Research

Related publications: Tanygnathus sumatranus

Species Wild Status

World Population:

Unknown, stable.

IUCN Red List Status:

Least Concern

CITES Listing:

Appendix II

Threat Summary:

Trapping and habitat loss have caused declines in some areas.

Range:

T.s. sumatranus: Sulawesi and nearby islands, Indonesia.
T.s. sangirensis: Talaud and Sangihe Islands, Indonesia.
T.s. burbidgii: Sulu Archipelago, southern Philippine Islands.
T.s. everetti: Central to southern Philippine Islands.
T.s. duponti: Luzon, northern Philippine Islands.
T.s. freeri: Polillo, northern Philippine Islands.

Habitat:

Occurs in lowland and lower mountain forest, along forest edge and occasionally in plantations or paddyfields up to 800m (2624 ft), mostly below 500m (1640 ft).

Wild Diet:

Diet includes fruit, nuts, seeds and berries, and occasionally cultivated crops.

Ecology and Behaviour:

Resident, quiet and inconspicuous. Fairly approachable in areas where not harassed. Mostly encountered singly, in pairs or less often in flocks of up to 15 individuals. Active at night.

Clutch and Egg Size:

2 to 3 broadly elliptical eggs, 42.0 x 30.0mm (1.6 x 1.2 in)

Breeding Season:

April-November

Related Links:

AvianWeb
Wikipedia

Click photo to visit gallery

Blue-backed Parrot
© Chris | Wikimedia Commons

Academic Research

Related publications: Tanygnathus sumatranus

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