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 -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 19,100,000 medium
Extent of Occurrence non-breeding (km2) 18,000,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 0
Population trend Stable suspected -
Decline (3 years/1 generation past) - - -
Decline (5 years/1 generation past) - - -
Decline (10 years/1 generation past) - - -
Decline (10 years/3 generation future) - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations - - -
Largest subpopulations - - -
Generation length (yrs) 12.9 - - -

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 Occurrence status Presence Resident Breeding Non-breeding Passage
Bangladesh N Extant Yes
Bhutan N Extant Yes
Brunei N Extant Yes
Cambodia N Extant Yes
China (mainland) N Extant Yes
Hong Kong (China) N Extant Yes
India N Extant Yes
Indonesia N Extant Yes
Japan N Extant Yes
Laos N Extant Yes
Macao (China) N Extant Yes
Malaysia N Extant Yes
Myanmar N Extant Yes
Nepal N Extant Yes
Pakistan N Extant Yes
Philippines N Extant Yes
Singapore V Extant Yes
South Korea V Extant Yes
Sri Lanka N Extant Yes
Taiwan, China N Extant Yes
Thailand N Extant Yes
Vietnam N Extant 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 Whole Adults and juveniles Wild Non-trivial Recent
Pets Whole Adults and juveniles Wild International Trivial Recent
Pets/display animals, horticulture - - - International Non-trivial Recent

Recommended citation
BirdLife International (2019) Species factsheet: Spilornis cheela. Downloaded from http://www.birdlife.org on 21/06/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 21/06/2019.