LC
Socotra Sunbird Chalcomitra balfouri



Taxonomy

Taxonomic note
Chalcomitra balfouri (del Hoyo and Collar 2016) was previously placed in the genus Nectarinia following Dowsett & Forbes-Watson (1993); Sibley & Monroe (1990, 1993).

Taxonomic source(s)
del Hoyo, J., Collar, N.J., Christie, D.A., Elliott, A., Fishpool, L.D.C., Boesman, P. and Kirwan, G.M. 2016. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 2: Passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.
Dowsett, R. J.; Forbes-Watson, A. D. 1993. Checklist of birds of the Afrotropical and Malagasy regions. Tauraco Press, Li
Sibley, C. G.; Monroe, B. L. 1990. Distribution and taxonomy of birds of the world. Yale University Press, New Haven, USA.

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
2000 Lower Risk/Least Concern
1994 Lower Risk/Least Concern
1988 Lower Risk/Least Concern
Species attributes

Migratory status not a migrant Forest dependency Does not normally occur in forest
Land mass type Average mass -
Extent of occurrence (EOO)

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 4,300 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals unknown not applicable not applicable 0
Population trend Decreasing 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) 3.6 - - -

Population justification: The global population size has not been quantified, but the species is described as common (Cheke et al. 2001).

Trend justification: The population is suspected to be in decline owing to habitat degradation through intense grazing and wood clearance for timber.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Yemen N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Yemen Diksam (Socotra)
Yemen Falang - Momi coast and cliffs (Socotra)
Yemen Firmihin near Jabal Keseslah, Socotra
Yemen Haggeher (Socotra)
Yemen Hamaderoh plateau and scarp, Socotra
Yemen Jabal Ma'alah / Ma'alah Plateau, Socotra
Yemen Limestone plateau above Siko village, Socotra
Yemen Noged Plain, Socotra
Yemen North slopes of the Haggeher Mountains (Socotra)
Yemen Wadi Ayhaft, Socotra
Yemen Wadi Di Negehen (Socotra)
Yemen Wadi Merkoh (Socotra)

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Shrubland Subtropical/Tropical Dry major resident
Altitude 0 - 1370 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Livestock farming & ranching - Agro-industry grazing, ranching or farming Timing Scope Severity Impact
Ongoing Whole (>90%) Slow, Significant Declines Medium Impact: 7
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Whole (>90%) Slow, Significant Declines Medium Impact: 7
Stresses
Ecosystem degradation

Recommended citation
BirdLife International (2020) Species factsheet: Chalcomitra balfouri. Downloaded from http://www.birdlife.org on 30/03/2020. Recommended citation for factsheets for more than one species: BirdLife International (2020) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 30/03/2020.