In the center of Assam state(india), this park is one of the last areas in eastern India undisturbed by a human presence It is inhabited by the world's largest population of one-horned rhinoceroses, as well as many mammals, including tigers, elephants, panthers and bears, and thousands of birds.
The site is on the southern bank of the Brahmaputra River (India)at the foot of the Mikir Hills the park lies in the flood plains of the Brahmaputra the riverine habitat consists primarily of tall, dense grasslands interspersed with open forests, interconnecting streams and numerous small lakes Three-quarters or more of the area is submerged annually by the flood waters of the Brahmaputra soils are alluvial deposits of the Brahmaputra and its tributaries.
There are 3 main types of vegetation: alluvial inundated grasslands, tropical wet evergreen forests and tropical semi-evergreen forests. Grasslands predominate in the west, with tall 'elephant' grasses on the higher ground and short grasses on the lower ground surrounding the bheels . They have been maintained by annual flooding and burning over thousands of years. Tropical wet evergreen forests, near Kanchanjhuri, Panbari and Tamulipathar blocks, are dominated by trees. Tropical semi-evergreen forests occur near Baguri, Bimali and Haldibari.
The park contains about fifteen species of India's threatened mammals it harbours the world's largest population of Indian rhinoceros and Indian elephant other mammals include capped langur, a small population of hoolock gibbon, tiger Panthera tigris , leopard, sloth bear, Ganges dolphin, otter, wild boar, water buffalo, gaur, sambar, swamp deer, hog deer and Indian muntjac. Elephants and other animals migrate with the advent of the monsoon and head southwards to the Mikir Hills and beyond to avoid the annual flooding of the national park the numerous water bodies are rich reservoirs of food (including fish) and thousands of migratory birds, representing over 100 species, visit the park seasonally from as far afield as Siberia. There is a grey pelican rookery near Kaziranga Village. Other birds of interest include black-necked stork, lesser adjutant stork, Pallas's fish eagle, grey-headed fish eagle, Bengal florican, swamp partridge, grey peacock-pheasant, great pied hornbill, green imperial pigeon, silver-breasted broadbill and Jerdon's bushchat. The avifauna comprises over 300 species.