The Royal Bardiya National Park covers 968 sq. km./ 363 sq. mi. of the Terai in Nepals far-West, and is the largest and least-disturbed wilderness area in the Terai. It provides an excellent habitat for over 30 different mammal species, including the endangered Royal Bengal Tiger, One-horned Rhinoceros, Wild Elephant, Swamp deer, and Black buck. The Great One-horned Rhinoceros was successfully reintroduced to Bardiya from Chitwan in 1986. Herds of elegant black buck in the open grassland are a stirring sight unique to Bardiya. Other common animals found in the Park include the leopard and lesser cats, the blue bull (Nilgai), several species of deer, the langur and rhesus monkeys, sloth bear, and the wild boar. The open grasslands within the Park, locally known as phantas, are ideal for game viewing.
The Karnali, one of Nepals largest rivers, forms the western boundary of the park. The endangered Gangetic dolphin is often seen in its waters. Other endangered riverine species include the fish-eating Gharial and Marsh mugger crocodiles. The Karnali also offers excellent fishing for masheer, a large freshwater perch. Over 250 species of birds have so far been recorded in the Park, including the endangered Bengal and Lesser Floricans, Silver-eared Mesia, and the Sarus crane