The sanctuary offers ideal habitat for winter migratory birds with considerable diversity in nesting and feeding behaviours. It is one of the preferred nesting sites for heronry species and colonial birds migrating to South India . The feathered visitors flock the sanctuary from October to February. The wetland is irregular in depth and retains water for 3 to 5 months if rain is normal. Breeding population consists of Spot billed Pelican, Open billed stork, Liitle egret, Large egret, Grey hreon, Purple heron, Pond heron .
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