1. Bird(Common Noun-Common &/or Masculine) The Little Bittern is a wading bird in the heron family Ardeidae, native to the Old World, breeding in Africa, central and southern Europe, western and southern Asia, and Australasia. Birds from temperate regions in Europe and western Asia are migratory, wintering in Africa and further south in Asia, while those nesting in the tropics are sedentary. It is rare north of its breeding range. The Australian race dubius is often regarded as a separate species, Black-backed Bittern. (Assamese birds name source- Prantik 16 Jun 2009, article page-26)

English: Ixobrychus minutus, little bittern,
Assamese: খেৰীবগ