The three species within the genus Zanda are actually variously regarded as two, then as just one species for quite a while. Inside of a 1979 paper, Australian ornithologist Denis Saunders highlighted the similarity in between the quick-billed and also the southern race xanthanotus on the yellow-tailed and addressed them https://lukasgmjrw.amoblog.com/about-umbrella-cockatoo-molting-58465028