Critically Endangered

Critically Endangered is the highest risk category assigned by the IUCN Red List for wild species. Critically endangered means that a species numbers have decreased, or will decrease, by 80% within three generations.[1]

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

See also

References