Botaurus poiciloptilus Original caption: “New-Zealand Bittern, Botaurus pæciloptilus.”
English: Illustration of the Australasian Bittern.
Date Published 1888
Source New Zealand Electronic Text Centre
Author By J. G. Keulemans, in W.L. Buller's A History of the Birds of New Zealand. 2nd edition. Published 1888.
Source: https://commons.wikimedia.org/wiki/File:Bul02BirdP037.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.