The Azure-rumped parrot(Tanygnathus sumatranus) has the head and the the mantle a light yellowish green (slightly more yellowish mantle). The low back, buttocks and uppertail-coverts strongly impregnated with light blue.
Wings Green darker that the the mantle, with fine verde-amarillentos margins to coverts; primary coverts Blue sharp; bend of wing turquoise blue color marked; primaries Foreign and blackish green in vane inner.
Wing feathers greenish yellow; underside of flight feather, blackish. The underparts yellowish-green illuminated.
Upper, the tail green, marked in yellow on the vane inmates of the lateral feathers; Under, the tail varies from yellow to dark brown.
Bill red; irises yellow; legs grey.
It presents sexual dimorphism. The female has the bill yellowish or whitish grey; less greenish-yellow in the the mantle and less blue in the under wing-coverts.
Male young acquires the bill Red after ten to twelve months.
Tanygnathus sumatranus sumatranus (Raffles, 1822): La nominal.
Tanygnathus sumatranus sangirensis
(AB Meyer & Wiglesworth, 1894): Presenta mรกs azul en los bordes de las alas y sus coberteras, cabeza de tono verde mรกs oscuro e iris.
Tanygnathus sumatranus burbidgii
(Sharpe, 1879): Sus tonos verdes son mรกs oscuros y tiene el cuello mรกs claro, sus iris son amarillos.
Tanygnathus sumatranus everetti
(Tweeddale, 1877): Tiene el manto y espalda mรกs oscuros, cabeza y obispillo mรกs claros. Presenta algo de azul en el manto y su iris es rojo.
Tanygnathus sumatranus duponti
(Parkes, 1971): Es de color verde oscuro con el cuello amarillo, sus coberteras de la parte inferior de las alas son amarillentas y su iris rojo.
Tanygnathus sumatranus freeri
(McGregor, 1910): Color mรกs uniforme y menos contrastado, con mรกs amarillo en la nuca y con el iris rojo.
Habitat:
It is distributed mainly in lowland and lower montane forests, next to forests, and from time to time in the plantations or rice fields until 800 m altitude (less common in coastal habitats).
The birds are usually found in pairs or in small groups and may be quite accessible. They can be harmful to the crops, especially corn crops, and they are often active at night.
Reproduction:
Little is known of the species reproductive cycle, but a condition of being reproductive female was observed in April and birds have been investigating possible nests in September. In Sulawesi during November were observed in several nests chicks.
Food:
The diet includes fruits, seeds, nuts and berries.
Elsewhere widespread and locally common, While the capture and loss of habitat have caused declines in some areas. Apparently less common than Blue-naped Parrot, which cohabit.
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