Greater Crested Tern (Sterna bergii velox)

A common breeding resident* inhabiting coastal waters, lagoons, estuaries, salt-pans, sand spits and tidal flats as small to large flocks. It feeds entirely on fish. Greater Crested Tern breeds colonially on remote off-shore rocky islets, Adam's bridge islands and sometime in remote coastal areas from May to July.  A single egg is laid on bare sand without any nest. 

*Race thalassina is considered as a vagrant to western coastal areas.