Some rare and endangered migratory birds, such as the Eurasian oystercatcher and Nordmann’s greenshank, one of the most endangered shorebirds in the world, have also been observed in recent years.

The Eurasian Wigeon, a freshwater duck species, was one of the season's most notable arrivals, with over 2,000 individuals counted at Kovalam Creek. Experts attribute the rise in migratory bird ...