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Extinct in the Wild
 
 
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Extinct in the Wild (EW) is a conservation status
Conservation status

The conservation status of a species is an indicator of the likelihood of that species remaining extant taxon either in the present day or the near future....
 assigned to species or lower taxa, the only known living members of which are being kept in captivity or as a naturalized population outside its historic range.

ples of such animals include:

See :Category:Species extinct in the wild for a list.

troduction is the deliberate release of species into the wild, from captivity or relocated from other areas where the species survives.






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Extinct in the Wild (EW) is a conservation status
Conservation status

The conservation status of a species is an indicator of the likelihood of that species remaining extant taxon either in the present day or the near future....
 assigned to species or lower taxa, the only known living members of which are being kept in captivity or as a naturalized population outside its historic range.

Species examples

Examples of such animals include:

  • Abingdon Island Tortoise
    Lonesome George

    Lonesome George is the last known individual of the Pinta Island Tortoise, subspecies Geochelone nigra abingdoni, one of eleven subspecies of Gal?pagos tortoise native to the Gal?pagos Islands....
  • Red-tailed Black Shark
    Red-tailed black shark

    The red-tailed black shark, Epalzeorhynchos bicolor, also known as the redtail shark, is a species of freshwater fish in the carp family, Cyprinidae....
  • Père David's Deer
    Père David's Deer

    P?re David's Deer, Elaphurus davidianus, also known as the Milu , is a species of deer known only in captivity. It prefers marshland, and is believed to be native to the subtropics of China....
  • Barbary Lion
    Barbary Lion

    The Barbary Lion, Atlas lion or Nubian lion is a subspecies of lion that has become Extinction in the wild. There are around 40 in captivity in Europe, with fewer than a hundred in zoos around the world....
     (extinct in the wild since 1922)
  • Wyoming Toad
    Wyoming Toad

    The Wyoming Toad is an extremely rare amphibian that exists only in captivity and within Mortenson Lake National Wildlife Refuge in the U.S. state of Wyoming....
     (extinct in the wild since 1991)
  • Hawaiian Crow
    Hawaiian Crow

    The Hawaiian Crow or ?Alala is a species of bird in the jay Family , Corvidae. It is about the size of the Carrion Crow at in length, but with more rounded wings and a much thicker bill....
     (extinct in the wild since 2002)
  • Alagoas Curassow
    Alagoas Curassow

    The Alagoas Curassow, Mitu mitu, is a large, up to 89 cm long, pheasant-like bird with a whitish-tipped red Beak, black glossed purplish blue plumage, chestnut under-belly, reddish brown Iris and fourteen pale brown-tipped tail feathers....
     (extinct in the wild since 1987 or 1988)
  • Socorro Dove
    Socorro Dove

    The Socorro Dove is a dove that is extinct in the wild. It was endemic to Socorro Island in the Revillagigedo Islands; the last sighting in its natural habitat was in 1972 in science....
     (extinct in the wild since 1972)
  • Guam Rail
    Guam Rail

    The Guam Rail, Gallirallus owstoni, is a flightless bird, endemic to Guam. The Guam Rail, which is locally known as the Ko'ko' in Chamorro language, disappeared from southern Guam in the early 1970s and was extirpated from the entire island by the late 1980s....
     (extinct in the wild since 1980)
  • Black Soft-shell Turtle
    Black Soft-shell Turtle

    The black soft-shelled turtle or Bostami turtle is a species of freshwater turtle found in India and Bangladesh . Where the species first lived is not known, but now the species survives from a small population in a manmade pond which is part of a shrine in Chittagong, Bangladesh....
  • Butterfly Goodeid
  • Northern white rhinoceros
    Northern White Rhinoceros

    The Northern White Rhinoceros or Northern Square-lipped rhinoceros is one of the two subspecies of the White Rhinoceros. This subspecies is a grazer and is an animal of grasslands and savannah woodlands....
  • Partula (genus)
    Partula (genus)

    Partula is a genus of snails of the family Partulidae.Partulids are spread over of Pacific Ocean islands, from the Society Islands to Palau....
  • Scimitar Oryx
    Scimitar Oryx

    The Scimitar Oryx, or Scimitar-Horned Oryx, is a species of oryx which formerly inhabited the whole of North Africa. Today conflicting reports exist as to whether it is extinct in the wild, or whether small populations survive in central Niger and Chad....
  • South China Tiger
    South China Tiger

    The South China tiger or South Chinese tiger , also known as the Chinese, Amoy, or Xiamen tiger, is a subspecies of tiger native to the forests of Northern and southern China....
  • Spix's Macaw
    Spix's Macaw

    The Spix's Macaw is the only member of the parrot genus Cyanopsitta. No sightings of this macaw have been made in the wild since 2000, but part of the range has not been surveyed....
See :Category:Species extinct in the wild for a list.

Reintroduction

Reintroduction is the deliberate release of species into the wild, from captivity or relocated from other areas where the species survives. It usually involves species that are endangered or extinct in the wild.

It may be very hard to reintroduce EW species into the wild, even if their natural habitats were restored. A main reason may be that the survival techniques, which are normally passed from parents to offspring during parenting, are lost. In other words it may be explained by the fact that the genetics
Genetics

Genetics , a discipline of biology, is the science of heredity and Genetic variation in living organisms. The fact that living things inherit traits from their parents has been used since prehistoric times to improve crop plants and animals through selective breeding....
 of the species is saved, but the natural memetics
Memetics

Memetics is an approach to evolutionary models of cultural information transfer based on the concept of the meme. Starting from a metaphor used in the writings of Richard Dawkins, it has since turned into a new area of study, one that looks at the self-replicating units of culture....
 of the species is lost.

See also


  • Conservation status
    Conservation status

    The conservation status of a species is an indicator of the likelihood of that species remaining extant taxon either in the present day or the near future....
  • List of extinct animals
    List of extinct animals

    Pre-modern* List of dinosaurs* List of pterosaurs* List of plesiosaurs* List of ichthyosaurs* Hominidae...
  • Extinction
    Extinction

    In biology and ecology, extinction is the death of every member of a species or group of taxon. The moment of extinction is generally considered to be the death of the last individual of that species ....
  • Reintroduction
    Reintroduction

    Reintroduction is the deliberate release of species into the wild, from captive breeding or relocated from other areas where the species survives....