EN
Basra Reed-warbler Acrocephalus griseldis



Taxonomy

Taxonomic source(s)
AERC TAC. 2003. AERC TAC Checklist of bird taxa occurring in Western Palearctic region, 15th Draft. Available at: #http://www.aerc.eu/DOCS/Bird_taxa_of _the_WP15.xls#.
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
- A3c A3c

Red List history
Year Category Criteria
2016 Endangered A3c
2012 Endangered A2c+3c+4c
2008 Endangered A2c; A3c; A4c
2006 Endangered
2004 Endangered
2000 Lower Risk/Near Threatened
1994 Lower Risk/Near Threatened
1988 Lower Risk/Least Concern
Species attributes

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

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 438,000 medium
Extent of Occurrence non-breeding (km2) 2,060,000 medium
Number of locations -
Fragmentation -
Population and trend
Estimate Data quality Derivation Year of estimate
No. of mature individuals 1500-7000 poor estimated 2004
Population trend Stable medium 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) 50-79 - - -
Decline (10 years/3 generation past and future) - - -
Number of subpopulations 1 - - -
Largest subpopulations 100 - - -
Generation length (yrs) 4.4 - - -

Population justification: A very crude estimate of the breeding population in Iraq between 2005 and 2011 was 4,500 pairs (Nature Iraq in press).  The authors of this estimate stress caution should be taken with this estimate and so the population is retained in the range of 2,500-9,999 individuals.  This is consistent with recorded population density estimates for congeners or close relatives with a similar body size, and the fact that only a proportion of the estimated Extent of Occurrence is likely to be occupied.  This estimate is equivalent to 1,667-6,666 mature individuals, rounded here to 1,500-7,000 mature individuals.

Trend justification: A very rapid and ongoing population decline was estimated from declines in ringing records of migrating birds, as well as the loss of the species's marshland breeding habitat.  However, the population is suspected to have been roughly stable since 2005-2011 estimates (M. Salim and L. A. Al-Obeidi in litt. to R. Porter 2016).  Despite this, there have been recent droughts along with water management practices that have led to a reduction, again, in available breeding habitat.  This, in combination with uncertainty over future water management (M. Salim and L. A. Al-Obeidi in litt. to R. Porter 2016), is suspected to be able to cause very rapid future declines.


Country/territory distribution
Country/Territory Occurrence status Presence Resident Breeding Non-breeding Passage
Botswana V Extant Yes
Egypt V Extant Yes
Ethiopia N Extant Yes Yes
Iran, Islamic Republic of N Extant Yes
Iraq N Extant Yes
Israel N Extant Yes
Kenya N Extant Yes Yes
Kuwait N Extant Yes
Malawi N Extant Yes
Mozambique N Extant Yes
Saudi Arabia N Extant Yes
Somalia N Extant Yes Yes
South Sudan N Extant Yes
Sudan N Extant Yes Yes
Syria V Extant Yes
Tanzania N Extant Yes Yes
Uganda N Extant Yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name
Ethiopia Gambella National Park
Ethiopia Koka dam and Lake Gelila
Ethiopia Lake Abe wetland system
Iraq Al Jadriyah and Umm Al Khanazeer island
Iraq Central Marshes
Iraq Haur Al Hachcham and Haur Maraiba
Iraq Haur Al Hammar
Iraq Hawizeh
Iraq Shatt Al Arab marshes
Kenya Lake Naivasha
Kenya Lower Tana River Forests
Kenya Tana River Delta
Kenya Tsavo East National Park
Kenya Tsavo West National Park
Somalia Laag Badaana

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Aquatic & Marine Artificial/Aquatic - Canals and Drainage Channels, Ditches suitable breeding
Artificial/Aquatic & Marine Artificial/Aquatic - Canals and Drainage Channels, Ditches suitable breeding
Artificial/Aquatic & Marine Artificial/Aquatic - Wastewater Treatment Areas suitable passage
Artificial/Aquatic & Marine Artificial/Aquatic - Wastewater Treatment Areas suitable passage
Artificial/Aquatic & Marine Artificial/Aquatic - Water Storage Areas (over 8ha) suitable passage
Artificial/Aquatic & Marine Artificial/Aquatic - Water Storage Areas (over 8ha) suitable passage
Savanna Dry suitable non-breeding
Savanna Dry suitable non-breeding
Shrubland Subtropical/Tropical Moist major non-breeding
Shrubland Subtropical/Tropical Moist major non-breeding
Wetlands (inland) Freshwater Springs and Oases suitable passage
Wetlands (inland) Freshwater Springs and Oases suitable passage
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) major breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) major breeding
Wetlands (inland) Permanent Freshwater Marshes/Pools (under 8ha) suitable breeding
Wetlands (inland) Permanent Freshwater Marshes/Pools (under 8ha) suitable breeding
Wetlands (inland) Permanent Inland Deltas major breeding
Wetlands (inland) Permanent Inland Deltas major breeding
Wetlands (inland) Permanent Rivers/Streams/Creeks (includes waterfalls) suitable breeding
Wetlands (inland) Permanent Rivers/Streams/Creeks (includes waterfalls) suitable breeding
Wetlands (inland) Permanent Saline, Brackish or Alkaline Marshes/Pools suitable breeding
Wetlands (inland) Permanent Saline, Brackish or Alkaline Marshes/Pools suitable breeding
Altitude   Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Biological resource use Fishing & harvesting aquatic resources - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Ongoing Unknown Negligible declines Unknown
Stresses
Ecosystem degradation
Climate change & severe weather Droughts Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation, Reduced reproductive success, Species mortality
Energy production & mining Oil & gas drilling Timing Scope Severity Impact
Ongoing Minority (<50%) Slow, Significant Declines Low Impact: 5
Stresses
Ecosystem degradation, Ecosystem conversion
Energy production & mining Renewable energy Timing Scope Severity Impact
Ongoing Majority (50-90%) Rapid Declines Medium Impact: 7
Stresses
Ecosystem degradation, Ecosystem conversion
Energy production & mining Renewable energy Timing Scope Severity Impact
Ongoing Majority (50-90%) Rapid Declines
Stresses
Ecosystem degradation, Ecosystem conversion
Human intrusions & disturbance Work & other activities Timing Scope Severity Impact
Past, Unlikely to Return Majority (50-90%) No decline Past Impact
Stresses
Species disturbance, Ecosystem degradation
Natural system modifications Dams & water management/use - Abstraction of surface water (domestic use) Timing Scope Severity Impact
Ongoing Majority (50-90%) Rapid Declines Medium Impact: 7
Stresses
Ecosystem degradation, Ecosystem conversion
Natural system modifications Dams & water management/use - Abstraction of surface water (domestic use) Timing Scope Severity Impact
Ongoing Majority (50-90%) Rapid Declines
Stresses
Ecosystem degradation, Ecosystem conversion
Residential & commercial development Housing & urban areas Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Residential & commercial development Housing & urban areas Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Declines
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2018) Species factsheet: Acrocephalus griseldis. Downloaded from http://www.birdlife.org on 16/10/2018. Recommended citation for factsheets for more than one species: BirdLife International (2018) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 16/10/2018.