Botaurus is a genus of bitterns, a group of wading bird in the heron family Ardeidae. The genus name Botaurus is derived from Medieval Latin butaurus, Bos (ox) and taurus (bull), because the bittern's call resembles the bellowing of a bull.

1/  Eurasian bittern or great bittern (Vạc rạ, Botaurus stellaris)
The species name stellaris is Latin for "starred", from stella, "star", and refers to the speckled plumage.