Tanygnathus sumatranus

Written by on November 19, 2010 in Indonesia Bird with 0 Comments

Tanygnathus sumatranus, Blue-backed Parrot, Betet kelapa Punggung-biru

The Blue-backTanygnathus sumatranus, Blue-backed Parroted Parrot, Tanygnathus sumatranus, is also known as M’s (or Mueller’s) Parrot, or Azure-rumped Parrot. This parrot is endemic to the Philippines, and Sulawesi and nearby islands in Indonesia. It occurs in forest and nearby habitats (including cultivated areas) at altitudes up to 800 m. Flocks are small and often active at night. Known to eat crops, including corn.
[edit] Description

It is of medium size (32 cm), basically green with yellowish edging to the wings, a blue rump, and blue wing bends. The head, mantle, wings and tail are darker green, the belly and collar are lighter green. It is sexually dimorphic, with the male having a red beak and the female a pale yellow or horn colored beak. There are six subspecies:

* T. s. sumatranus: Sulawesi and nearby islands. Yellow iris.
* T. s. sangirensis: Sangir Islands and Karakelong. More blue on wing bends and wing coverts, head darker green. Yellow iris.
* T. s. burbidgii: Sulu Islands. Darker green with lighter collar. Yellow iris.
* T. s. everetti: Panay, Negros, Leyte, Samar, Mindanao. Mantle and back darker, rump and head lighter. Some blue in mantle. Red iris.
* T. s. duponti: Luzon. Dark green with yellow collar. Yellowish underwing coverts. Iris red.
* T. s. freeri: Polillo Islands. More uniform color with less contrast, more yellow on nape. Iris red.

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