Definition

Umbrella term for any species categorised as Critically Endangered, Endangered or Vulnerable by the IUCN Red List of Threatened Species.

International Union for Conservation of Nature (IUCN) 2012 ¹

Any species that is likely to become extinct within the foreseeable future throughout all or part of its range and whose survival is unlikely if the factors causing numerical decline or habitat degradation continue to operate.

Specially Protected Areas Protocol 1997 ²