Critically Endangered

Critically Endangered is the highest risk category assigned by the IUCN for wild species. Critically Endangered means that the numbers of a species have decreased, or will decrease by 80% within the next three generations.

Because the IUCN does not consider a species extinct until surveys have been conducted, species which are possibly extinct are listed as Critically Endangered. A new category for "Possibly Extinct" has been suggested by BirdLife International to categorize these taxa.

Species
see IUCN Red List critically endangered species