Shuklaphanta Wildlife Reserve was managed as a hunting reserve beginning 1969, and was gazetted as a Wildlife Reserve in 1976, covering an area of 305 sq. km. It lies in the extreme south-western section of Nepal’s Terai in Kanchanpur District. The reserve shares a common boundary with the Indian state of Uttar Pradesh in the south and west which is formed by the Mahakali (Sarda), River, and a major tributary of the Ganges. It is bordered on the eastern side by the Chaudhar River and to the north by a forest belt and cultivations. A total of 24 mammal species was recorded by Schaff (1978b), a total of 350 species of birds of which 180 are breeding species (Inskipp, 1989), Bhatt and Shrestha (1977) provide an annotated list of 14 species of fish, Schaaf (1978b) recorded 10 species of ectoparasites and biting flies.
Although the area of the Reserve is small, it supports a wide range of biodiversity which is nationally and globally important. The vegetation types primarily include sal forest, sal savanna, which is part of continuum between climax forest and grassland that is maintained by fire and floods. The reserve supports the largest population of Bengal florican Houbaropsis bengalensis (E) and swamp deer Cervus duvauceli (E).
Parsa Wildlife Reserve is located in the south-central lowland Terai of Nepal. The 499 km2 of pristine sub-tropical jungle makes Parsa Nepal's largest wildlife reserve. Once this area served as a vacation site for the Rana Rulers of the country. In 1984, it was gazetted as a wildlife reserve to preserve the habitat for wild Asian elephant, and a variety of other fauna- It is contiguous with Chitwan National Park in the west.
Koshi Tappu Wildlife Reserve lies on the floodplains of the Sapta Koshi River in the south-eastern Terai. The reserve was gazetted in 1976 to preserve habitat for the only remaining population of Wild buffalo, Arna (Bubalus arnee). The 176 sq. km. reserve is Nepal's smallest wildlife reserve. The eastern and western embankments of the Sapta Koshi River define the area. In 1987, Koshi Tappu was declared a Ramsar site, a wetland of international significance. Government of Nepal has declared the buffer zone ( 173.5 sq. km ) surrounding the reserve in 2004.