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A taxon is Extinct in the Wild when it is known only to survive in cultivation, in captivity or as a naturalized population (or populations) well outside the past range [1].


  1. ^ IUCN, "2001 IUCN Red List Categories and Criteria: Version 3.1" p.14 Last visited: 30 May 2010.
Anatomy of an amiotic egg This article is part of Project Glossary, an All Birds project that aims to write comprehensive articles on each term related to animals.