Sinharaja Forest Reserve is a forest reserve and a biodiversity hotspot in Sri Lanka. It is of international significance and has been designated a Biosphere Reserve and World Heritage Site by UNESCO.
According to International Union for Conservation of Nature (IUCN), Sinharaja is the country’s last viable area of primary tropical rainforest. Over 60% of the trees are endemic, many of them considered rare. 50% of Sri Lankan’s endemics species of animals (especially butterfly, amphibians, birds, snakes and fish species). It is home to 95% endemic birds.