NT
Arabian Grosbeak Rhynchostruthus percivali



Taxonomy

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.

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

Red List history
Year Category Criteria
2016 Near Threatened C2a(ii)
2012 Near Threatened C2a(ii)
2008 Near Threatened C2a(ii)
2004 Not Recognised
2000 Not Recognised
1994 Not Recognised
1988 Not Recognised
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) 624,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 6000 poor estimated 2006
Population trend Decreasing poor 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 2-100 - - -
Largest subpopulations - - -
Generation length (yrs) 4.3 - - -

Population justification: It is generally scarce and difficult to locate even at known sites, with the exception perhaps of Yemen (R. Porter in litt. 2006).  Its population is approximately estimated to number c.3,000 pairs, i.e. c.6,000 mature individuals and c.9,000 individuals including juveniles and non-breeders.  This comprises 500 pairs in Saudi Arabia; 500 pairs in Oman, although this may be optimistic (J. Atkins in litt. 2006, R. Porter in litt. 2016), and c.2,000 pairs in Yemen (Jennings 2010).

Trend justification: R. Porter in litt. (2006) indicated that the species is possibly declining.


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

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

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Grassland Subtropical/Tropical Dry suitable resident
Rocky areas (eg. inland cliffs, mountain peaks) suitable resident
Shrubland Subtropical/Tropical Dry suitable resident
Altitude   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 Unknown Unknown
Stresses
Ecosystem degradation

Recommended citation
BirdLife International (2019) Species factsheet: Rhynchostruthus percivali. Downloaded from http://www.birdlife.org on 24/04/2019. Recommended citation for factsheets for more than one species: BirdLife International (2019) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 24/04/2019.