Udaipur Wildlife Sanctuary is a beautiful wildlife sanctuary located in West Champaran district of Bihar, India. Established in 1978, it spans 8.74 square km and is centered around the scenic Udaipur Jheel — an oxbow lake in the floodplain of the Gandak River.
On 13th May 2025, it was designated as a Ramsar Site (Site No. 2577), recognizing its global ecological importance. The sanctuary features swamp forests, dry riverine forests, and Khair-Sissoo woodlands. It is home to Spotted Deer, Barking Deer, Wild Boar, Blue Bull, Civet, Jungle Cat, Porcupine and over 35 species of migratory birds.