Valmiki wildlife sanctuary. It enters in India at Valmikinagar(formally known as BHAINSA LOTAN), where two rivulets Sonha and Pachnad joins it, forming a holy confluence ‘Triveni’. The river is called ‘Narayani’ in Nepal. Harha – Masan River system originates from the Valmiki Forests and forms Burhi Gandak River down south. River Pandai flows into Bihar (India) from Nepal in the eastern end of the Sanctuary and meets Masan. All these rivers with their precursor and tributaries namely Rohua, Kotrahia, Manor, Bhapsa, Koshil, Singha, Dhonghi, Ganguli, Dhoram are full of youth and verve. Their cascades in wanton and wayward playfulness while descending from hills ridges and gorges are enchanting. Meeting the planes they slowly mature to serene grandeur. Fauna Mammals The wildlife found in the forest of VTR are the Bengal tiger, Indian rhinoceros, Asiatic black bear, Indian sloth bear, otter, Indian leopard, wild dog, wild water buffalo, and wild boar. There are several species of deer, including barking deer, spotted deer, hog deer, Sambar, blue bull. Apart from that the striped hyena, leopard cat, fishing cat, langur, monkey, flying squirrel, clouded leopard, Indian gaur, mongoose can also be sighted. The tiger's population in the Reserve was 10 in 2010, which increased to 22 in 2013 and then 40 in 2018. There is site in Madanpur forest block on the main road from Madanpur to Valmikinagar where large number of Indian flying fox, a type of bat can be sighted any time. Reptiles The reptiles which are commonly found in VTR are pythons, King cobras, Krait, Banded kraits and domuha snakes (sand boas). Among aquatic reptiles, gharial, monitor lizard, etc. are found in VTR. Plenty of crocodiles are found near Belahwa Village which is adjacent to the VTR. Gharials are found in River Gandak, as would be the case with a river that connects to the Ganges. Birds At present 241 bird species have been reported from VTR. Some of the interesting birds of VTR are Nepal kalij pheasant, three-toed quail, paradise flycatcher, grey shrike, green willow warbler, tree pipit, white eye warbler, green barbet, waders, ibises, storks, pitta, plovers, snipes, pied hornbill, White-eared night heron, emerald dove. There are five types of green pigeons and purple wood pigeon found in VTR. In the night several owls, owlets, nightjars, etc. can be easily sighted. Butterflies The jungle of VTR abounds in various kinds of moth, caterpillars and butterflies. Some common butterflies