The bird sanctuary was declared in the year 1989, with an estimated area of 66.66 ha. in Keela Kanjirankulam and 37.55 ha. in Mela Kanjirankulam The sanctuary area is within the community tank embankments and its immediate water holding channel, measuring approximately 15 meters from the bottom of the embankment. Most notable feature of the sanctuary area is the prominent growth of Babul (Acacia nilotica) trees
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