Koshi tapu wildlife reserve was established in 1976 and designated as a Ramsar site in December 1987. Koshi Tappu Wildlife Reserve, the smallest of the national parks of the terai is a paradise to bird watchers. But to enjoy this, you don’t have to be a realistic twitcher. We can find a captivating walk here that will be appreciated by anyone.The Koshi Tappu Wildlife Reserve is a protected area in the Terai of eastern and it covers 175 km2 of wetlands in the Sunsari, Saptari and Udayapur Districts. Koshi tappu wildlife reserve protects and promotes the major part of the eastern Nepals biodiversity. Koshi Tappu Wildlife Reserve has 514 species.Some species that are found in Koshi tapu wildlife reserve are Cattail, kapok, eelgrass, Imperata cylindrica, sugarcane, reed, Azolla, lotus, hydrilla, and Einchhorina.We can also find 200 species of fish where most of them are resident.Many other species like two toad species, nine frog species, six lizard species, five snake species and eleven turtle species are also found..