LC
Clamorous Reed-warbler Acrocephalus stentoreus



Taxonomy

Taxonomic note
Populations from Indonesia to Solomons comprising four subspecies (siebersi, harterti, celebensis and lentecaptus) previously included in A. australis (del Hoyo and Collar 2014) have been transferred to A. stentoreus based on unpublished genetic evidence (Per Alström, per WGAC), although the position of celebensis is less clear. Species has often been considered conspecific with A. australis. Hybrids between present species and A. arundinaceus described from S Kazakhstan (Hansson et al. 2012). Somewhat larger and darker birds from Levant, currently included in nominate subspecies, sometimes separated as subspecies levantinus. Eight subspecies recognized.

Taxonomic source(s)
Handbook of the Birds of the World and BirdLife International. 2022. Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 7. Available at: http://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v7_Dec22.zip.

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

Red List history
Year Category Criteria
2022 Least Concern
Species attributes

Migratory status full migrant Forest dependency Low
Land mass type Average mass -
Distribution

Estimate Data quality
Extent of Occurrence breeding/resident (km2) 38,000,000
Extent of Occurrence non-breeding (km2) 33,310,000
Number of locations -
Severely Fragmented -
Population and trend
Value Data quality Derivation Year of estimate
No. of mature individuals 0
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 - - -

Population justification: The global population size has not been accurately quantified, but the species is described as common to abundant in much of its range (del Hoyo et al. 2006). Densities of 10-20 singing birds/ha in the Nile Delta, Egypt, suggest more than 100,000 breeding pairs there (Snow and Perrins 1998) and densities seem similarly high through much of its range (Kennerley and Pearson 2010).

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
Afghanistan N Extant Yes
Bahrain N Extant Yes
Bangladesh N Extant Yes Yes
China (mainland) N Extant Yes
Djibouti N Extant Yes
Egypt N Extant Yes
Eritrea N Extant Yes
India N Extant Yes Yes
Indonesia N Extant Yes
Iran, Islamic Republic of N Extant Yes Yes Yes
Iraq N Extant Yes
Israel N Extant Yes
Jordan N Extant Yes
Kazakhstan N Extant Yes
Kuwait N Extant Yes Yes
Kyrgyzstan N Extant Yes
Lebanon V Extant Yes
Myanmar N Extant Yes
Nepal N Extant Yes
Oman N Extant Yes
Pakistan N Extant Yes Yes Yes
Philippines N Extant Yes
Qatar N Extant Yes
Saudi Arabia N Extant Yes
Somalia N Extant Yes
Sri Lanka N Extant Yes Yes
Sudan N Extant Yes
Syria N Extant Yes
Tajikistan N Extant Yes Yes
Turkmenistan N Extant Yes
United Arab Emirates N Extant Yes
Uzbekistan 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
Forest Subtropical/Tropical Moist Montane suitable breeding
Forest Subtropical/Tropical Moist Montane suitable non-breeding
Grassland Subtropical/Tropical Seasonally Wet/Flooded suitable breeding
Grassland Subtropical/Tropical Seasonally Wet/Flooded suitable non-breeding
Shrubland Subtropical/Tropical Moist suitable breeding
Shrubland Subtropical/Tropical Moist suitable non-breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands major breeding
Wetlands (inland) Bogs, Marshes, Swamps, Fens, Peatlands major non-breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) suitable breeding
Wetlands (inland) Permanent Freshwater Lakes (over 8ha) suitable non-breeding
Wetlands (inland) Permanent Freshwater Marshes/Pools (under 8ha) suitable breeding
Wetlands (inland) Permanent Freshwater Marshes/Pools (under 8ha) suitable non-breeding
Wetlands (inland) Permanent Rivers/Streams/Creeks (includes waterfalls) suitable breeding
Wetlands (inland) Permanent Rivers/Streams/Creeks (includes waterfalls) suitable non-breeding
Altitude 0 - 3000 m Occasional altitudinal limits  

Recommended citation
BirdLife International (2023) Species factsheet: Acrocephalus stentoreus. Downloaded from http://www.birdlife.org on 05/02/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://www.birdlife.org on 05/02/2023.