Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
This species is listed as Endangered because it has an extremely small population. However, the conservation status of the species is improving, with not only increases in the natural wild population but also establishment of two reintroduced flocks that may become self-sustaining. If the number of mature individuals continues to increase, this species may merit downlisting to Vulnerable.
50-249 mature individuals
Distribution size (breeding/resident):
Land-mass type - continent - Continents are land masses > bigger than Australia (=7,682,300 sq km).
Realm - Nearctic - realm
IUCN Ecosystem -- Freshwater biome
IUCN Ecosystem -- Marine biome