LC
Socotra Warbler Incana incana



Taxonomy

Taxonomic note

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 Low
Land mass type Average mass -
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 4,300 medium
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals poor estimated 2009
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 - - -
Percentage in largest subpopulation - - -
Generation length (yrs) 4.3 - - -

Population justification: The total population has been estimated to be in excess of 5,000 individuals (del Hoyo et al. 2006). Estimates of population densities were 27.5 and 3.9 individuals per km² in the coastal plain and foothills respectively (with no data from the highlands) (Davidson 1996).

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
Yemen N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Yemen Muqadrihon pass, Socotra
Yemen Wadi Ayhaft, Socotra
Yemen Rewgid and Regid plateaus, Socotra
Yemen Jabal Jaaf (Socotra)
Yemen Hamaderoh plateau and scarp, Socotra
Yemen Shu'ub Coast / Coast of Bindar Di-Sha'b, Socotra
Yemen Firjih / Central Socotra
Yemen Di-Ishal foothills, Socotra
Yemen Diksam (Socotra)
Yemen Firmihin near Jabal Keseslah, Socotra
Yemen Noged Plain, Socotra
Yemen Limestone plateau above Siko village, Socotra
Yemen Falang - Momi coast and cliffs (Socotra)
Yemen Wadi Di Negehen (Socotra)
Yemen Jabal Ma'alah / Ma'alah Plateau, Socotra
Yemen Haggeher (Socotra)
Yemen North slopes of the Haggeher Mountains (Socotra)
Yemen Wadi Merkoh (Socotra)

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Dry suitable resident
Grassland Subtropical/Tropical Dry major resident
Shrubland Subtropical/Tropical Dry major resident
Shrubland Subtropical/Tropical High Altitude major resident
Altitude 0 - 1400 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Agriculture & aquaculture Annual & perennial non-timber crops - Small-holder farming Timing Scope Severity Impact
Ongoing Whole (>90%) Unknown Unknown
Stresses
Ecosystem degradation, Ecosystem conversion
Agriculture & aquaculture Livestock farming & ranching - Small-holder grazing, ranching or farming Timing Scope Severity Impact
Ongoing Whole (>90%) Unknown Unknown
Stresses
Ecosystem degradation, Ecosystem conversion
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Whole (>90%) Unknown Unknown
Stresses
Ecosystem degradation

Recommended citation
BirdLife International (2022) Species factsheet: Incana incana. Downloaded from http://www.birdlife.org on 27/11/2022. Recommended citation for factsheets for more than one species: BirdLife International (2022) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 27/11/2022.