The Least Bittern (Ixobrychus exilis) is a species of bird (Aves) in the family Ardeidae (Herons, Egrets, and Bitterns) and order Pelecaniformes (Ibises).
Ixobrychus flavicollis
Ixobrychus dubius
Ixobrychus cinnamomeus
Ixobrychus sturmii
Ixobrychus exilis
Ixobrychus minutus
Ixobrychus novaezelandiae
Ixobrychus eurhythmus
Ixobrychus involucris
Ixobrychus sinensis