Red List Category
for more information about the Red List categories and criteria
Justification of Red List category
This poorly known species qualifies as Critically Endangered because it is estimated to have a tiny population, which is in decline owing to egg-collection, disturbance and the loss of coastal wetlands.
BirdLife Species Guardian:
Chinese Wild Bird Federation
30-49 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
Realm - Oceanic - realm
IUCN Ecosystem -- Marine biome