Cropped version of <a href="//commons.wikimedia.org/wiki/File:CurtisKakabeak.jpg" title="File:CurtisKakabeak.jpg">Image:CurtisKakabeak.jpg</a>. This is a reproduction of a hand coloured engraving by W.J. Hooker, published in William Curtis's Botanical magazine, No. 3584, Volume 64, 1837.
W.J. Hooker
published 1837
<a rel="nofollow" class="external free" href="http://www.nzbirds.com/CurtisKakaBeakLg.html">http://www.nzbirds.com/CurtisKakaBeakLg.html</a>, accessed 8 April 2006.