Mauritius Night-Heron Nycticorax mauritianus was described
from seven fossil bones (of which only a coracoid and a
tarsometatarsus are available today), from Mauritius.
Leguat's description of “great flights of bitterns” in
1693 probably refers to this species, given that the only
two other species of Ardeidae known from the island are
Dimorphic Egret Egretta dimorpha and Green Heron Butorides
striatus, which could in no way be described as “bitterns”.