කරවැල් කොකා[Karawal Koka]/Purple Heron(Ardea purpurea )

Purple Heron is a common resident bird of low country, both dry and wet zones. It feeds on fish, frogs and even insects on marshes, paddy fields, mangroves, lagoons and tanks by day, while most active at dawn and dusk.  Usually feed solitary by skulking among reeds. It breeds from December to February and again in May to June. Three or fours eggs lay in a nest which is just a pile of sticks placed on low trees growing in flooded water, often in company with other herons, egrets and cormorants.

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කන කොකා [Kana Koka]/Indian Pond Heron ( Ardeola grayii)

Very common bird usually found in paddy fields throughout the island. It also lives close to tanks, lagoons and marshlands. Eventhough it is solitary in habit during day time feedings , flocks can be seen flying to its night time communal roosting trees at dusk. Breeding season is from December to May and nests can be observed in regular heronries sometime with other species of herons, cormorants.

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Black-crowned night heron/ Raa Koka (Nycticorax nycticrax)

Common resident bird of marshes, mangroves, rivers, tanks and lagoons of low country both wet and dry zone and foot hills.  Nocturnal in habit and spending the day time roosting communally in trees.  Its food consists mainly of fish, frogs and some water insects.