Sinharaja forest reserve is one of the least disturbed and biologically unique lowland rain forests in Sri Lanka. It is also national park in Sri Lanka. This is a very good place to see many endemic birds such as Ceylon Lorikeet, Layard’s parakeet, Jungle and Spur Fowl, Ceylon Wood Pigeon, Grey Hombill, Spotted wing Thrush, Rufous and Brown- capped Babbler, Ashy-headed Laughing Thrush, Ceylon Blue Magpie, White Headed Starling, Ceylon Hill Mynha, Legge’s Flowerpecker It is of international significance and has been designated a Biosphere Reserve and World Heritage Site by UNESCO. Sinharaja is situated close to Ratnapura and is between the villages of Rakwana, Deniyaya and Matugama. It covers about 11,187 hectares from east to west. The length of the forest is about 21km and width from North to South is about 3.7km.
Variety of indigenous plants and animals, flowing rivers and silent streamlets cover up nearly 9800 hectares. Out of a total of 830 indigenous flowering plants in the Island Sinharaja has nearly 500 plants and out of 21 native bird species in the country 17 species have made Sinharaja is their home.
It was declared a Man and Biosphere Reserve (MAB) in 1978, as representative of tropical humid evergreen forest Eco system in Sri Lanka and has been recognized by UNESCO as part of its International Network of Biosphere reserves.