. . . . "Black-backed bittern"@en . . . "The black-backed bittern (Ixobrychus dubius), also known as the black-backed least bittern or Australian little bittern, is a little-known species of heron in the Ardeidae family found in Australia and southern New Guinea. Formerly lumped with the little bittern, it is one of the smallest herons in the world."@en . "* Ixobrychus minutus alisteri Mathews, 1913." . . "* Ixobrychus novaezelandiae dubius" . . . "* Ixobrychus minutus victoria Mathews, 1915." . "* Ardetta pusilla Gould." . "* Ixobrychus minutus queenslandicus Mathews, 1914." . "* Ardea pusilla Vieillot, 1817." . "* Ixobrychus minutus dubius Mathews, 1912." .