The three species over the genus Zanda have been variously regarded as two, then as 1 species for really some time. Inside of a 1979 paper, Australian ornithologist Denis Saunders highlighted the similarity between the small-billed and also the southern race xanthanotus about the yellow-tailed and handled them as one https://zanderqmjwj.slypage.com/37190556/the-best-side-of-umbrella-cockatoos