Definition: 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. A taxon is
presumed Extinct in the Wild when exhaustive surveys in known and/or expected habitat,
at appropriate times (diurnal, seasonal, annual), throughout its historic range have failed
to record an individual. Surveys should be over a time frame appropriate to the taxon’s
life cycle and life form.