The 3 species within the genus Zanda are already variously regarded as two, then as just one species for fairly a while. In the 1979 paper, Australian ornithologist Denis Saunders highlighted the similarity between the small-billed together with the southern race xanthanotus about the yellow-tailed and handled them as one https://waylongjevc.blogsvila.com/36747618/cockatoo-health-guarantee-uk-fundamentals-explained