வெள்ளி, 13 டிசம்பர், 2013

BRHMANA RAJALIYA/UKUSSA-බ්රාහ්මණ උකුස්සා
The Brahminy Kite (Haliastur indus), is a medium-sized bird of prey in the family Accipitridae, which also includes many other diurnal raptors such as eagles, buzzards and harriers. They are found in the Indian subcontinent, Southeast Asia and Australia. They are found mainly on the coast and in inland wetlands where they feed on dead fish and other prey. Adults have a reddish brown plumage and a contrasting white head and breast which makes them easy to distinguish from other birds of prey.
The Brahminy Kite is distinctive and contrastingly coloured, with chestnut plumage except for the white head and breast and black wing tips. The juveniles are browner, but can be distinguished from both the resident and migratory races of Black Kite in Asia by the paler appearance, shorter wings and rounded tail. The pale patch on the underwing carpal region is of a squarish shape and separated from Buteo buzzards.
The nests are constructed of small branches and sticks with a bowl inside and lined with leaves, and are sited in various trees, often mangroves. They show considerable site fidelity nesting in the same area year after year. In some rare instances they have been seen to nest on the ground under trees, but this practice is not found in Sri Lanka . A clutch of two dull white or bluish-white oval eggs measuring 52 x 41 mm is laid. Both parents take part in nest building and feeding but it is suggested that only the female incubates. The incubation period is about 26 to 27 days.
It is primarily a scavenger, feeding mainly on dead fish and crabs, especially in wetlands and marshland but occasionally hunts live prey such as hares and bats. They may also indulge in kleptoparasitism and attempt to steal prey from other birds. Brahminy Kites have even been recored taking advantage of Irrawaddy dolphins herding fish to the surface, in the Mekong River. A rare instance of a bird feeding on honey at the hive of Apis florea has been recorded.
Young birds may indulge in play behaviour, dropping leaves and attempting to catch them in the air. When fishing over water, they may sometimes land in the water but manage to swim and take off without much trouble.
They roost communally on large and isolated trees and as many as 600 have been seen at just one location.
 — with Shani Galleand 49 others.

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