Common resident bird found in tanks, paddy fields and marshes of low country of the island. It lives as flocks of a dozen or so birds and feeds on paddy, insects and other small animals. It is partially nocturnal and uttered its whistling call frequently in flight when heading to its feeding grounds during dusk from the day retreat which is usually a small islet in a tank or boughs of a dead tree standing in water. Breeding season is from December to January and again from July to August. Nest often place in a water side vegetation or holes in trees usually standing in water.