Botaurus- a Bittern, in late Latin; probably akin to our "Bittern." French butor, etc. Certainly not derived from bos+taurus, though perhaps confused therewith in popular etymology.
Bill short, stout, with broad nasal groove. Long lax plumage, beautifully mottled yellow and black. Four powder-down patches. Mid toe and claw longer than tarsus and longer than bill. Hind claw very long. Sexes alike. Cos¬mopolitan.