Vaduvoor Bird Sanctuary is located in Thiruvarur district of Tamil Nadu. The nearest city, Thanjavur, is located 25 kms from the sanctuary. Created in July 1999, the Sanctuary attracts more than 40 species of water birds like Ibis, Painted stork, Grey pelican, Pintail, Cormorant, Teals, Herons etc..
The Sanctuary is a large irrigation tank which receives water from Mettur dam especially from the northeast monsoon from August to December. It remains dry from April to August.