Family Reed-warblers (Acrocephalidae)

Least Concern

Black-browed Reed-warbler (Acrocephalus bistrigiceps)


French: Rousserolle de Schrenck German: Brauenrohrsänger Spanish: Carricerín cejinegro

Acrocephalus bistrigiceps


, 1860,

Xiamen (Amoy), Fujian, China


Previously treated as conspecific with A. tangorum, but recent DNA studies indicate genetic difference between the two in excess of 9.5%, and morphological studies support treatment as separate species. Two recently described races, sachalinensis (Sakhalin) and voronovi (Kunashir I, Veselovskogo Peninsula)#R, require evaluation. Provisionally treated as monotypic.


SE Russia (SE Siberia, Amur Valley, Ussuriland), NE & E China, Korean Peninsula (scarce), Sakhalin and Japan (Hokkaido S to C Honshu, locally Kyushu); non-breeding NE India E to S & SE China and Taiwan (uncommon) S to Malay Peninsula, rarely N Sumatra.

Descriptive notes

13·5–14 cm; 7–11 g (mean 9·4 g). A typical small unstreaked Acrocephalus. Has characteristic conspicuous square-ended pale supercilium... read more


Song a series of quickly repeated short phrases interspersed with dry rasping and churring notes,... read more


Occupies various types of vegetation close to water, e.g. sedges with clumps of willows (Salix... read more

Food and feeding

Insects and spiders (Araneae). Stomachs of five specimens contained beetles (Coleoptera), spiders and a caterpillar. Frequency of various... read more


Season Jun–Aug; in SE Siberia, laying recorded 18th-22nd Jun, incubated clutches between 20th Jun and 20th Jul; in Sakhalin, nest... read more


Migratory; spends non-breeding season in S & SE Asia. Data very scarce. Starts to disappear... read more

Status and conservation

Not globally threatened (Least Concern). Locally numerous. Common on breeding grounds in SE Russia, and numerous in E China; in Japan, is a common breeding visitor, and... read more

Recommended citation

Dyrcz, A. (2019). Black-browed Reed-warbler (Acrocephalus bistrigiceps). 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 24 August 2019).