Family Reed-warblers (Acrocephalidae)

Least Concern

Blunt-winged Warbler (Acrocephalus concinens)


Taxonomy

French: Rousserolle de Swinhoe German: Strauchrohrsänger Spanish: Carricero de Swinhoe
Taxonomy:

Calamoherpe concinens

Swinhoe

, 1870,

Beijing, China

.

Closely related to A. tangorum and, to lesser extent, A. agricola; formerly treated as conspecific with latter. Differs from both, and from A. bistrigiceps, in combination of plumage characters and biometrics; furthermore, molecular analysis revealed 5.6% divergence from A. tangorum#R. Race hokrae (described from Hokra jheel, Kashmir) has been considered valid#R, but is also suggested to be a pale colour morph of race haringtoni#R. Three subspecies recognized.

Subspecies and Distribution
  • A. c. haringtoni Witherby, 1920 – from N Afghanistan E to Kashmir; non-breeding unknown, probably lower foothills in Pakistan and NW India#R.
  • A. c. stevensi E. C. S. Baker, 1922 – NE India (plains of R Brahmaputra, in Assam) and probably adjacent parts of Bangladesh and Myanmar; non-breeding NE India (West Bengal, Meghalaya, Manipur and the floodplain of the Brahmaputra)#R.
  • A. c. concinens (Swinhoe, 1870) – N & C parts of E China (Beijing and N Hebei S to Guangxi and, probably, Guangdong); non-breeding mainly S & E Myanmar, N & C Thailand and N & C Laos#R.
  • Descriptive notes

    13–14 cm; 7·7–8·9 g. Drab, unstreaked reed-warbler with rather prominent supercilium. Nominate race has whitish supercilium extending short distance behind eye,... read more

    Voice

    Song varied, short phrases consisting mainly of slurred whistles, clear notes and some buzzing... read more

    Habitat

    Breeds in reeds, rushes, tall grass and other dense vegetation around lakes, at swamps and along... read more

    Food and feeding

    No exact data. Diet includes insects, e.g. small beetles (Coleoptera), ants ­(Hymenoptera).

    Breeding

    Season end Apr to Aug in Indian Subcontinent. Nest a neat deep cup made of grass, reed fibre, rush leaves, occasionally some moss (one was... read more

    Movements

    Resident and migratory. Race stevensi largely resident, subject to some movement outside... read more

    Status and conservation

    Not globally threatened. Locally fairly common breeder in W Himalayas, but rare summer visitor in Pakistan; uncommon in China. Uncommon non-breeding visitor in SE Asia.

    Recommended citation

    Dyrcz, A. (2019). Blunt-winged Warbler (Acrocephalus concinens). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/58799 on 16 February 2019).