Topic summary
Critically endangered species
Extracted from the Wikipedia article Critically endangered.
Possibly extinct
As the IUCN Red List does not consider a species extinct until extensive targeted surveys have been conducted, species that are possibly extinct are still listed as critically endangered. IUCN maintains lists of critically endangered species that are "possibly extinct" and "possibly extinct in the wild", modelled on categories used by BirdLife International, the Red List Authority for birds for the IUCN Red List. "Possibly extinct" and "Possibly extinct in the wild" are considered tags for critically endangered species, and are not their own Red List categories.