cormorantmohanraj

wetlands lakes diving bird cormorants coots conservation tamil nadu periyakulam wetlands. major flora whiskered tern white breasted kingfisher river tern common coot indian pond heron black crowned night heron spot billed duck little grebe purple heron purple moorhen little cormorant little egret waterbirds society bnhs near threatened species tiruchirappalli periyakulam lake wild life bird sanctuary iba mportant bird area diversity density seasonal variation waterbirds