The Sinharaja rainforest is home to many native birds such as Loriculus beryllinus (Ceylon Hanging Parrot), Ocyceros gingalensis, Ashy-headed Laughing Thrush (Garrulax cinereifrons), Layard Parakeet (Psittacula calthripae), the Jungle fowl (Gallus lafayetii), the Spur fowl (Galloperdix bicalcarata), the Ceylon Wood Pigeon (Columba torringtonii), the Brown- capped Babbler (Pellorneum fuscocapillum), the Red-faced Malkoha are famous in this area.

19 of the 20 species of endemic species from Sri Lanka in Sri Lanka are in the Sinharaja Reserve.

Endangered birds include the Sri Lankan Pigeon, Green-billed Cod, Sri Lanka White-headed Sling, Red-faced Malkoha, Green-billed Caucasus, Sri Lanka, Sri Blue Shell Lankan and the Babbler with head ash, are endemic.

In sri lanka it has 12 endemic mammal species thence 8 species live in sinharaja forest. Constantly you can see in here, Giant squirrel, dusky-stripped jungle squirrel, badger mongoose and endemic purple-faced leaf monkey and torque macaque.

Many threatened species of mammals, reptiles, amphibians and butterflies are found in the Reserve. Endemism in mammals and butterflies is over 50%. Reptiles and amphibians include python, endemic viper, endemic lizard (Lyriocephalus scutatus) and horned lizard (Ceratophora aspera).

You can see beautiful birds and butterfly flocks all around the forest.

There are four main access routes to Sinharaja. The northwestern Kalawana-Weddagala road, the North-East Rakwana-Morning side road, the Southwest Hiniduma-Neluwa road and the Southeast Deniyaya-Pallegama road. Among these roads, the Kalawana-Weddagala road is closer and more easy for visitors traveling from Colombo.

August to September and January to April are the best times to visit to sinharaja forest.

When you walk into the forest you must pay attention to leeches that can suck out human blood. But the local people have many methods to minimize leech hazards.