LC
Socotra Grosbeak Rhynchostruthus socotranus



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.
Kirwan, G. M.; Grieve, A. 2007. Studies of Socotran birds II. One, two or three species: towards a rational taxonomy for the Golden-winged Grosbeak Rhynchostruthus socotranus. Bulletin of the African Bird Club 14(2): 159-169.
Kirwan, G. M.; Grieve, A. 2007. Studies of Socotran birds II. One, two or three species: towards a rational taxonomy for the Golden-winged Grosbeak Rhynchostruthus socotranus. Bulletin of the African Bird Club 14(2): 159-169.

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 Not Recognised
2000 Not Recognised
1994 Not Recognised
1988 Not Recognised
Species attributes

Migratory status not a migrant Forest dependency Low
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 6500 poor estimated 2007
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) 4.3 - - -

Population justification: Kirwan and Grieve (2007).

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 Diksam (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
Forest Subtropical/Tropical Dry suitable resident
Grassland Subtropical/Tropical Dry suitable resident
Rocky areas (eg. inland cliffs, mountain peaks) suitable resident
Shrubland Subtropical/Tropical Dry suitable resident
Altitude 1060 - 2800 m Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Climate change & severe weather Habitat shifting & alteration Timing Scope Severity Impact
Future Whole (>90%) Unknown
Stresses
Indirect ecosystem effects, Ecosystem degradation

Recommended citation
BirdLife International (2019) Species factsheet: Rhynchostruthus socotranus. Downloaded from http://www.birdlife.org on 23/04/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 23/04/2019.