American Bittern - The American Bittern is a wading bird of the heron family Ardeidae.
Pinnated Bittern - The Pinnated Bittern , also known as the South American Bittern, is a large member of the heron family found in the New World tropics. Like the other Botaurus bitterns, its plumage is mostly buffy-brown and cryptically patterned. Though it is a widespread species, it is rarely seen – presumably due to its skulking habits – and much about its life history remains little known.
Australasian Bittern - It is a large bittern, patterned and streaked brown, buff and black, with a pale throat. It is a cryptic and partly nocturnal species that inhabits densely vegetated wetlands. It feeds on aquatic animals such as frogs, eels and freshwater crustaceans. It is a solitary nester on the ground in dense wetland vegetation on trampled reeds and other plants. It has a distinctive booming voice and may be heard more often than seen.
Eurasian Bittern - Bitterns are thickset herons with bright, pale, buffy-brown plumage covered with dark streaks and bars, similar in appearance to the to the American Bittern, Botaurus lentiginosa. The Eurasian or Great Bittern is 69-81 cm in length, with a 100-130 cm wingspan, although their most distinctive feature is the males booming call in spring.