Top - Whitehead/Pōpokotea (<i><a href="//commons.wikimedia.org/wiki/Mohoua_albicilla" title="Mohoua albicilla">Mohoua albicilla</a></i>).  Bottom left - Yellowhead (<i><a href="//commons.wikimedia.org/w/index.php?title=Mohua_ochrocephala&amp;action=edit&amp;redlink=1" class="new" title="Mohua ochrocephala (page does not exist)">Mohua ochrocephala</a></i>). Bottom right - Brown Creeper (<i><a href="//commons.wikimedia.org/wiki/Mohoua_novaeseelandiae" title="Mohoua novaeseelandiae">Mohoua novaeseelandiae</a></i>).
By <a href="//commons.wikimedia.org/wiki/J._G._Keulemans" class="mw-redirect" title="J. G. Keulemans">J. G. Keulemans</a>.
Buller's "A History of the Birds of New Zealand, 2nd edition. Published 1888."