Yellow Bittern

Habitat:

Yellow Bitterns prefer to nest in dense vegetation near water. In Singapore, they used to nest among the fern thickets and Water Hyacinths in the swamps at Kranji. Elsewhere, they also nest in tall rushes and reeds, flooded rice fields, undergrowth, dense trees near water. Where there are a lot of Yellow Bitterns in one area, they may nest near each other. (Source from: http://www.naturia.per.sg/buloh/birds/Ix...)