Thaumatibis gigantea&o=10616

Critically endangered species

Organisms with a conservation status of critically endangered have an extremely high risk of becoming extinct.

IUCN Category

The World Conservation Union (IUCN), widely considered to be the most objective and authoritative system for classifying species in terms of the risk of extinction, lists 3071 species (1528 animals, 1541 plants, 2 fungi) of the world as being critically endangered in their 2006 Red List. Additionally 254 subspecies or varieties are considered critically endangered, and 30 subpopulations or stocks have been assessed with a critical risk of (local) extinction.

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

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.

Mammals

Pilosa

Odd-toed ungulates

Even-toed ungulates

Cetacea

Carnivores

Bats

Primates

Lagomorphs

Marsupials

Insectivores

Crocodilians

Squamata

Fish

Fungi

Birds

Anseriformes

Apodiformes

Charadriiformes

Ciconiiformes

Columbiformes

Falconiformes

Galliformes

Gruiformes

Passeriformes

Piciformes

Procellariiformes

Psittaciformes

Strigiformes

See also

References

Search another word or see Thaumatibis gigantea&o=10616on Dictionary | Thesaurus |Spanish
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT