Wednesday, 13 July 2011

Asian Openbill

Asian Openbill

The Asian Openbill or Asian Openbill Stork, (Anastomus oscitans)  is a large stork found in South Asia.

Asian Openbill

The entire plumage is white except the end of the wings and tail which are broadly tipped with black. In most birds the white is sullied by a smoky grey which is also thought to represent the breeding plumage.

Asian OpenbillAsian Openbill

The most distinguishing feature of this bird is its bill. Both the upper and lower mandibles are slightly curved, leaving a slight gap in the centre, giving it an “open bill”.

Asian Openbill

These are among the most common of Indian Storks, occurring in the vicinity of rivers, lakes  marshes and irrigated lands.

Asian Openbill

It is a social bird and is often found in considerable flocks. It is also a strong flier and can be seen soaring for long periods in the air.

Asian Openbill

It mainly feeds on freshwater molluscs, fish and crabs. Frogs and insects may also be part of its diet.

Asian Openbill

The breeding season is between July and August. They are colonial and each colony may consist of about 400-500 pairs and sometimes includes other birds such as Ibises and Herons.

Asian Openbill

Nests are often in large trees and consists of a circular pattern of sticks with a depression, lined with grass and leaves.Painted Stork

A clutch consists of 4-5 eggs.

Asian Openbill

  Sighting Information:
Location: Ranganathittu bird sanctuary
Date: 23rd April 2011
Time: Morning; 7:00 AM
Weather: Overcast morning after overnight rains
Other Details: Seen in a large flock along with Herons, Ibises, Pelicans and Painted Storks on an island colony.