sentence: ; avifauna the avifauna recorded in the lake , particularly in the festive season when they gather in the early hours of the morning ( dispersed with human presence ) at the middle of the lake are : grebe ( podiceps ruficollis ) , common merganser -- mergus merganser , large cormorant ( phalacrocorax carbo ) , little cormorant ( phalacrocorax niger ) , common teal ( anascrecca ) , tufted duck ( aythya fuligula ) , white-breasted waterhen ( amaurornis phoenicurus ) , moorhen ( gallimlachorophy ) and crane brown amaurornisbi color .