Blunt-winged Warbler (Acrocephalus concinens)

Blunt-winged Warbler Acrocephalus concinens

Current view: Data table and detailed info

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	Least Concern
2012	Least Concern
2009	Least Concern
2008	Least Concern
2004	Least Concern
2000	Lower Risk/Least Concern
1994	Lower Risk/Least Concern
1988	Lower Risk/Least Concern

Species attributes

Migratory status	full migrant	Forest dependency	does not normally occur in forest
Land-mass type		Average mass	-

Distribution

	Estimate	Data quality
Extent of Occurrence breeding/resident (km²)	6,820,000
Extent of Occurrence non-breeding (km²)	1,830,000
Severely fragmented?	no	-

Population and trend

	Value	Data quality	Derivation	Year of estimate
Number of mature individuals	unknown	not applicable	not applicable	0
Population trend	stable		suspected	-
Generation length (years)	4.4	-	-	-

Population justification: The global population size has not been quantified, but the species is described as a locally fairly common breeder in the western Himalayas; a rare summer visitor in Pakistan and uncommon in South-East Asia (del Hoyo et al. 2006). The population in China has been estimated at c.100-10,000 breeding pairs and c.50-1,000 individuals on migration (Brazil 2009).

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	Presence	Origin	Breeding	Non-breeding	Passage
Afghanistan	extant	native	yes
Bangladesh	extant	native		yes
Bhutan	extant	native			yes
China (mainland)	extant	native	yes
Hong Kong (China)	extant	vagrant
India	extant	native	yes
Laos	extant	native		yes
Myanmar	extant	native
Nepal	extant	native
Pakistan	extant	native	yes
Thailand	extant	native		yes
Vietnam	extant	native		yes

Important Bird and Biodiversity Areas (IBA)

Country/Territory	IBA Name

Habitats & altitude

Habitat (level 1)	Habitat (level 2)	Importance	Occurrence
Grassland	Subtropical/Tropical Seasonally Wet/Flooded	suitable	non-breeding
Wetlands (inland)	Bogs, Marshes, Swamps, Fens, Peatlands	suitable	breeding
Wetlands (inland)	Permanent Freshwater Lakes (over 8ha)	suitable	breeding
Wetlands (inland)	Permanent Rivers/Streams/Creeks (includes waterfalls)	suitable	breeding
Wetlands (inland)	Permanent Rivers/Streams/Creeks (includes waterfalls)	suitable	non-breeding
Altitude		Occasional altitudinal limits

Recommended citation
BirdLife International (2023) Species factsheet: Acrocephalus concinens. Downloaded from http://datazone.birdlife.org/species/factsheet/blunt-winged-warbler-acrocephalus-concinens on 23/09/2023. Recommended citation for factsheets for more than one species: BirdLife International (2023) IUCN Red List for birds. Downloaded from http://datazone.birdlife.org on 23/09/2023.