Family Reed-warblers (Acrocephalidae)

Least Concern

Blyth’s Reed-warbler (Acrocephalus dumetorum)


French: Rousserolle des buissons German: Buschrohrsänger Spanish: Carricero de Blyth

Acrocephalus dumetorum


, 1849,



Probably closer to A. palustris than to A. scirpaceus; hybridization with former recorded in SE Finland. Monotypic.


E Europe (mainly S Finland, Baltic states, Belarus) E to N Kazakhstan, NW Mongolia and C Russia (upper R Lena and SE Altai), also Tien Shan S to probably N Afghanistan and NE Iran. Winters in S & E Indian Subcontinent and Myanmar.

Descriptive notes

12–14 cm; 8–20 g (mean 11·2 g). Small unstreaked reed-warbler with drab, cold and comparatively uniform plumage, slim build, short and rounded wing,... read more


Song, given chiefly at night, characteristic, very varied mix of notes, some harsh, some clear,... read more


Adapted to varied habitats, not necessarily close to water. More arboreal than most members of... read more

Food and feeding

Diet includes following items: mayflies (Ephemeroptera), dragonflies (Odonata: Agriidae), stoneflies (Plecoptera), orthopterans, larval... read more


Season end of May to Jul; one brood per season. Monogamous, with facultative polygyny; pair formation takes place on breeding grounds. Nest... read more


Migratory; entire population spends non-breeding season in Indian Subcontinent (Nepal, Bangladesh,... read more

Status and conservation

Not globally threatened. Fairly numerous. Total European population estimated at 2,000,000–5,000,000 pairs, most of which in European Russia. Density when assessed over... read more

Recommended citation

Dyrcz, A. (2019). Blyth’s Reed-warbler (Acrocephalus dumetorum). 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 on 22 May 2019).