Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
This species is very poorly known with no recent records from the wintering grounds, and the only recent breeding records all originating from just one site. It has probably declined within its range and is suspected to have a moderately small population. Therefore, it is currently considered Near Threatened. Further information is necessary to improve this assessment of its status.
6000-15000 mature individuals
Distribution size (breeding/resident):
Land-mass type - continent - Continents are land masses > bigger than Australia (=7,682,300 sq km).
Realm - Indomalayan - realm
Realm - Palearctic - realm
IUCN Ecosystem -- Freshwater biome
IUCN Ecosystem -- Terrestrial biome