Great Nicobar Serpent-eagle Spilornis klossi

Family: Accipitridae (Hawks, Eagles)

Authority: Richmond, 1902

Red List Category

Criteria: D

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Justification of Red List category
This species is listed as Endangered precautionarily due to fears it may have a very small population size, comprising fewer than 250 mature individuals, given its confinement to less than 1,000 km2 of forest. Should it prove to be more abundant than documented here, it may not be as at high a risk of extinction as feared; however, should it prove to be declining, it may even qualify as Critically Endangered. Future research should endeavour to answer these questions urgently.

Population size: 150-370, 150-180 mature individuals

Population trend: unknown

Extent of occurrence (breeding/resident): 1,700 km2

Country endemic: yes

Land-mass type - oceanic island
Realm - Indomalayan
IUCN Ecosystem -- Terrestrial biome

Recommended citation
BirdLife International (2024) Species factsheet: Spilornis klossi. Downloaded from https://datazone.birdlife.org/species/factsheet/great-nicobar-serpent-eagle-spilornis-klossi on 01/03/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org on 01/03/2024.