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little bittern

n. 1 A bittern of the genus ''Ixobrychus''. 2 Without qualification, a bittern of the species ''Ixobrychus minutus''.

Wikipedia
Little bittern

The little bittern (Ixobrychus minutus) is a wading bird in the heron family, Ardeidae. Ixobrychus is from Ancient Greek ixias, a reed-like plant and brukhomai, to bellow, and minutus is Latin for "small".

This bittern is native to the Old World, breeding in Africa, central and southern Europe, western and southern Asia, and Madagascar. 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.