Tuesday, June 23, 2020

Bird Watching - Asian Openbill-Stork

Asian Openbill-Stork



A small white or greyish white stork, with black in the wings. the peculiar reddish black bill with arching mandibles leaving a narrow gap between them is a diagnostic. sexes alike. The name is derived from the distinctive gap formed between the recurved lower and arched upper mandible of the beak in adult birds.

Local Names : Gungla, Ghonghila (Hindi)
Naththai kuththi narai (Tamil)
Cherakokkan (Malayalam)
 
Scientific Name : Anastomus oscitans


Asian Openbills inhabit wetland habitats including shallow marshes, flooded agricultural fields, and lakes. From a distance they could be confused with herons, but they can be clearly distinguished from herons by their feeding habits—wading slowly through shallow water. Soars frequently, often in large dense flocks; note extended neck, unlike retracted neck of herons and egrets.

The Asian openbill feeds mainly on large molluscs, especially Pila species, and they separate the shell from the body of the snail using the tip of the beak. The tip of the lower mandible of the beak is often twisted to the right. This tip is inserted into the opening of the snail and the body is extracted with the bill still under water. They also feed on water snakes, frogs and large insects.

Nesting colonies are sometimes in highly disturbed areas such as inside villages and on trees located in crop fields. Nest is a circular platform of twigs with central depression lined with leaves. eggs are 2 to 4 , white close textured.

References
The Book of Indian Birds (Salim Ali)
Wikipedia

Pictures:
Kayamkulam, Kerala (2019)
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The picture was taken in a village in Kerala while visiting a relative. it was interesting to see them waiting near the fish ponds between the fields. In this area these birds are commonly seen in borders of all the larger tanks and freshwater lakes.




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