The species nests colonially in single- or mixed-species groups with up to 10-20 pairs per tree, occasionally up to 50 pairs. The nest is positioned in small trees over water or high up in larger trees on dry land. At night it forms communal roosts in favoured roosting sites (e.g. sandbanks or trees), which may attract individuals from a wide area. The overall trend is decreasing, although some populations may be stable. Its diet consists of small aquatic prey such as frogs, small fish, aquatic insects, worms and occasionally small mammals and birds. Species is classified as Least Concern (LC) on the IUCN Red List.
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