By J. G. Keulemans, in W.L. Buller's <i>A History of the Birds of New Zealand</i>, 2nd edition. Published 1888.
<bdi><a href="https://en.wikipedia.org/wiki/en:John_Gerrard_Keulemans" class="extiw" title="w:en:John Gerrard Keulemans"><span title="Dutch bird artist (1842-1912)">John Gerrard Keulemans</span></a>
</bdi>
1888
<a rel="nofollow" class="external free" href="http://www.nzbirds.com/Buller2ndKakapoLg.html">http://www.nzbirds.com/Buller2ndKakapoLg.html</a>