Family Leaf-warblers (Phylloscopidae)

Least Concern

Dusky Warbler (Phylloscopus fuscatus)


French: Pouillot brun German: Dunkellaubsänger Spanish: Mosquitero sombrío

Phillopneuste [sic] fuscata


, 1842,

Calcutta area, India


Has sometimes been treated as conspecific with P. fuligiventer (which see); race weigoldi of latter previously placed with present species, as has tibetanus been by some authors#R. Sakhalin breeders recently described as new race sachalinensis#R (sometimes misspelt sakhalinensis); further details needed. Proposed races altaicus (breeding Altai and Sayan Mts S to W & N Mongolia) and homeyeri (NE part of species’ range) synonymized with nominate. Two subspecies recognized.

Subspecies and Distribution
  • P. f. fuscatus (Blyth, 1842) – C & E Siberia from R Ob E to R Anadyr Basin, S to Tomsk region, Mongolia, NE China, Russian Far East (Ussuriland) and Sakhalin; non-breeding NE India, S Nepal, Bangladesh and S China, S to Andaman Is and Peninsular Malaysia, E to Taiwan and S Japan.
  • P. f. robustus Stresemann, 1923 – #RNC China (Gansu and Inner Mongolia to N Sichuan); non-breeding N Thailand and Laos.
  • Descriptive notes

    11–12 cm; 8·5–13·5 g. A medium-sized, slim, reatively short-tailed and slender-billed warbler, mostly drab brown but with prominent supercilium.... read more


    Song, delivered from arrival on territory to mid-Aug, from within trees and shrubs, occasionally in... read more


    Breeds in scrub and low dense vegetation in taiga forest, mainly of larch (Larix) and pine... read more

    Food and feeding

    Food small insects, particularly weevils (Curculionidae) and other small beetles (Coleoptera), also molluscs, small moths (Lepidoptera) and... read more


    End May to mid-Aug; nestlings mid-Jun and fledglings early Jul in SE Russia (Ussuriland), later farther N, and mid-Aug in Tuva region; one... read more


    Migratory; altitudinal and long-distance migrant. Populations of nominate race move S or SW to... read more

    Status and conservation

    Not globally threatened. Locally abundant; common or locally common in Russia and China. Densities of up to 30 birds/km² in C Siberian breeding area. Common in much of non-... read more

    Recommended citation

    Clement, P. (2019). Dusky Warbler (Phylloscopus fuscatus). 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 14 October 2019).