David, Patrick, C. Sivakumar, and Ranjit Manakadan. “Status And Abundance Of Waterbirds In Periyar Lake, Kerala, India”. Journal of the Bombay Natural History Society (JBNHS) 119 (June 30, 2022). Accessed January 17, 2026. https://www.bnhsjournal.in/index.php/bnhs/article/view/152350.