LC
Crested Serpent-eagle Spilornis cheela



Taxonomy

Taxonomic note
Spilornis minimus (Sibley and Monroe 1990, 1993) has been split into S. klossi with the remainder (i.e. nominate minimus) lumped with S. cheela (Sibley and Monroe 1990, 1993) following Rasmussen and Anderton (2005).

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A. and Fishpool, L.D.C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Lynx Edicions BirdLife International, Barcelona, Spain and Cambridge, UK.
del Hoyo, J.; Collar, N. J.; Christie, D. A.; Elliott, A.; Fishpool, L. D. C. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Barcelona, Spain and Cambridge UK: Lynx Edicions and BirdLife International.

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
- - -

Red List history
Year Category Criteria
2016 Least Concern
2012 Least Concern
2009 Least Concern
2008 Least Concern
2004 Least Concern
2002 Least Concern
2000 Not Recognised
1994 Not Recognised
1988 Not Recognised
Species attributes

Migratory status not a migrant Forest dependency medium
Land-mass type Average mass -
Range

Estimate Data quality
Extent of Occurrence (breeding/resident) 19,100,000 km2 medium
Extent of Occurrence (non-breeding) 18,000,000 km2 medium
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size unknown - - -
Population trend stable - suspected -
Generation length 12.9 years - - -

Population justification: The global population size has not been quantified, but the species is described as widespread and common, although locally uncommon (del Hoyo et al. 1992).

Trend justification: The population is suspected to be stable in the absence of evidence for any declines or substantial threats.


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Bangladesh extant native yes
Bhutan extant native yes
Brunei extant native yes
Cambodia extant native yes
China (mainland) extant native yes
Hong Kong (China) extant native yes
India extant native yes
Indonesia extant native yes
Japan extant native yes
Laos extant native yes
Macao (China) extant native yes
Malaysia extant native yes
Myanmar extant native yes
Nepal extant native yes
Pakistan extant native yes
Philippines extant native yes
Singapore extant vagrant yes
South Korea extant vagrant yes
Sri Lanka extant native yes
Taiwan, China extant native yes
Thailand extant native yes
Vietnam extant native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Terrestrial Arable Land suitable resident
Artificial/Terrestrial Plantations suitable resident
Artificial/Terrestrial Subtropical/Tropical Heavily Degraded Former Forest suitable resident
Forest Subtropical/Tropical Mangrove Vegetation Above High Tide Level suitable resident
Forest Subtropical/Tropical Moist Lowland suitable resident
Forest Subtropical/Tropical Moist Montane suitable resident
Marine Neritic Estuaries suitable resident
Savanna Dry suitable resident
Altitude 0 - 2000 m Occasional altitudinal limits (max) 3350 m

Utilisation
Purpose Primary form used Life stage used Source Scale Level Timing
Pets/display animals, horticulture - - - international non-trivial recent

Recommended citation
BirdLife International (2024) Species factsheet: Spilornis cheela. Downloaded from https://datazone.birdlife.org/species/factsheet/crested-serpent-eagle-spilornis-cheela on 24/02/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org on 24/02/2024.