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Classifying Threatened Species Kokako have an IUCN rating of "Endangered" IUCN IUCN is an international conservation group made up of government and non-government organisations, scientists and other conservation experts who carry out conservation action around the world. The IUCN publishes data on the species threatened and gives a classification of their conservation status. Department of Conservation In NZ DoC uses a ranking scale devised by Molloy and Davis. Together these scales provide priorities for species protection. For example Kokako are listed as "endangered" (20 % chance of going extinct in 20 years) on IUCN ranking with a category B (second priority rating) by the Department of Conservation. Print-friendly version of this page