TN: Karaivetti Bird Sanctuary designated as Ramsar Site. With this total Ramsar sites in India goes up to 80

Karaivetti Bird Sanctuary is basically an irrigation tank that receives water from the Mettur dam from September onwards which is supplemented by the northeast monsoons from October till January.

The sanctuary is one of the most important fresh water feeding ground for migratory water birds in the state of Tamil Nadu.

One of the largest tanks in the state, it has recorded the largest congregation of water birds among all the tanks in the state. Of the 188 species of birds recorded in the sanctuary, 82 are water birds. Among the important visitors to the tank is the endangered Bar Headed Goose.