Since the surface of the lake is weeded and clean the number of water ducks that come to the lake has increased. To allow these water ducks to reproduce more, six (06) two (02) compartment nest boxes with 10 and 12 mm openings were installed as perches and nest boxes. As the nest boxes are planted along the weedy part of the lake, the Khaya senegalensis and Khaya grandifoliola plants are planted on the same alignment as the nesting boxes.