Gorsakius Bonaparte, Consp. Av., ii, p. 138 (1855).
Type by orig. desig., Ardea melanolopha Raffles.
In Gorsakius the bill is as stout as in Nycticorax but much shorter, the culmen shorter than the middle toe and claw, which, again, are shorter than the tarsus; the nostrils are large, linear and open; the tarsus is short, stout and reticulated throughout; feet small, the toes bordered by a narrow membrane; the tail is short and of twelve feathers; the head crested, the neck short and thick; the wing rounded, with the second, third and fourth subequal, the third usually slightly the longest.