Attributes / relations provided by
♦ ¹del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
♦ ²Dry season diets of sympatric ungulates in lowland Nepal: competition and facilitation in alluvial tall grasslands, Per Wegge, Anil K. Shrestha, Stein R. Moe, Ecol Res (2006) 21:698–706
♦ ³Abundance of food plant species and food habits of Rhinoceros unicornis Linn. in Pobitora Wildlife Sanctuary, Assam, India, Pradip Konwar, Malabika Kakati Saikia & P.K. Saikia, Journal of Threatened Taxa | September 2009 | 1(9): 457-460