Saturday, March 22, 2014

Lesser Whistling Duck - Resident Breeder in Sri Lanka

The Lesser Whistling Duck (Dendrocygna javanica), also known as Indian Whistling Duck or Lesser Whistling Teal, is a species of whistling duckthat breeds in the Indian Subcontinent and Southeast Asia. They are nocturnal feeders and during the day may be found in flocks around lakes and wet paddy fields. They can perch on trees and sometimes build their nest in the hollow of a tree. This brown and long-necked duck has broad wings that are visible in flight and produces a loud two-note wheezy call. It has a chestnut rump, differentiating it from its larger relative, the Fulvous Whistling Duck, which has creamy white.

This is a largely resident species distributed widely across lowland wetlands of the Indian Subcontinent andSoutheast Asia. The species ranges across IndiaNepalSri LankaMalaysiaSingaporeIndonesia,MyanmarThailand and Vietnam. They also occur on islands in the region including the Andamans, Nicobars and Maldives.They sometimes make local movements in response to weather and changes in water availability and the more northern birds winter further south. They are found in freshwater wetlands with good vegetation cover and often rest during the day on the banks or even on the open sea in coastal areasDowny chicks are black with a white eyebrow and white patches on the back of the head, the wing, lower back and rump. Albino individuals have been seen in the wild.

Lesser Whistling Duck are usually gregarious. They feed mainly on plants taken from the water as well as grains from cultivated rice apart from small fish, frogs and invertebrates such as molluscs and worms.They dabble as well as dive in water. They will often waddle on the land and Common Mynas have been noted to follow them on grass.Courtship involves the male facing the female and dipping and raising its bill in the water and swimming around the female.hey breed during the monsoon or rainy season and may vary locally in relation to the food availability. The nest site may be a tree hole lined with twigs and grass or built in the fork of large tree, sometimes reusing and old nest of a kite or heron or even on the ground. The clutch varies from 7 to 12 white eggs that are incubated by both the parents. Large clutches of up to 17 have been noted although these may be indications of intraspecific brood parasitism.The eggs hatch after about 22–24 days. More than one brood may be raised in a single season. Young birds may sometimes be carried on the back of the parents.


Captured in Kumana National Park






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