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Basra Reed-warbler Acrocephalus griseldis

IUCN Red List Criteria

Critically Endangered  
Endangered A2c+3c+4c 
Vulnerable A2c+3c+4c 

IUCN Red List history

Year Category
2012 Endangered
2008 Endangered
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 continent
Average mass -

Distribution

  Estimate Data quality
Extent of Occurrence breeding/resident (km2) 90,800 medium
Extent of Occurrence non-breeding (km2) 186,000 medium
Number of locations -
Fragmentation -

Population & trend

  Estimate Data quality Derivation Year of estimate
No. of mature individuals 1500-7000 poor Estimated 2004
Population trend Decreasing medium -
Number of subpopulations 1 - - -
Largest subpopulation - - -
Generation length (yrs) 4.4 - - -
Population justification: The population is estimated to number 2,500-9,999 individuals based on an assessment of known records, descriptions of abundance and range size. 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 is estimated from declines in ringing records of migrating birds, as well as the loss of the species's marshland breeding habitat.

Country/Territory distribution

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

Important Bird Areas where this species has triggered the IBA criteria

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

Habitats & altitude

Habitat (level 1) Habitat (level 2) Importance Occurrence
Artificial/Aquatic & Marine Canals and Drainage Channels, Ditches suitable breeding
Artificial/Aquatic & Marine Wastewater Treatment Areas suitable passage
Artificial/Aquatic & Marine Water Storage Areas (over 8ha) suitable passage
Savanna Dry suitable non-breeding
Shrubland Subtropical/Tropical Moist major non-breeding
Wetlands (inland) Freshwater Springs and Oases suitable passage
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) major breeding
Wetlands (inland) Permanent Freshwater Marshes/Pools (under 8ha) suitable breeding
Wetlands (inland) Permanent Inland Deltas major breeding
Wetlands (inland) Permanent Rivers/Streams/Creeks (includes waterfalls) suitable breeding
Wetlands (inland) Permanent Saline, Brackish or Alkaline Marshes/Pools suitable breeding
Altitude 0 - 0 m Occasional altitudinal limits  

Threats & impact

Threat (level 1) Threat (level 2) Impact and Stresses
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 Medium Impact: 7
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
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 Medium Impact: 7
Stresses
Ecosystem degradation, Ecosystem conversion
Residential & commercial development Housing & urban areas Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion
Residential & commercial development Housing & urban areas Timing Scope Severity Impact
Ongoing Majority (50-90%) Slow, Significant Decline Medium Impact: 6
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2014) Species factsheet: Acrocephalus griseldis. Downloaded from http://www.birdlife.org on 15/09/2014. Recommended citation for factsheets for more than one species: BirdLife International (2014) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 15/09/2014.

This information is based upon, and updates, the information published in BirdLife International (2000) Threatened birds of the world. Barcelona and Cambridge, UK: Lynx Edicions and BirdLife International, BirdLife International (2004) Threatened birds of the world 2004 CD-ROM and BirdLife International (2008) Threatened birds of the world 2008 CD-ROM. These sources provide the information for species accounts for the birds on the IUCN Red List.

To provide new information to update this factsheet or to correct any errors, please email BirdLife

To contribute to discussions on the evaluation of the IUCN Red List status of Globally Threatened Birds, please visit BirdLife's Globally Threatened Bird Forums.

Key facts
Current IUCN Red List category Endangered
Family Sylviidae (Old World warblers)
Species name author (Hartlaub, 1891)
Population size 1500-7000 mature individuals
Population trend Decreasing
Distribution size (breeding/resident) 90,800 km2
Country endemic? No
Links to further information
- Summary information on this species