Hūrepo or Matuku, Australasian Bittern, Botaurus poiciloptilus, also known as the Brown Bittern.
Date 1888
Source http://www.nzbirds.com/birds/matuku.html
Author John Gerrard Keulemans in Walter Lawry Buller, A History of the Birds of New Zealand, 1888. Source: https://commons.wikimedia.org/wiki/File:Hurepo.jpg

The Australasian bittern (Botaurus poiciloptilus), also known as the brown bittern or matuku hūrepo, is a large bird in the heron family Ardeidae. A secretive bird with a distinctive booming call, it is more often heard than seen. Australasian bitterns are endangered in both Australia and New Zealand.