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