Family Thrushes (Turdidae)

Least Concern

Dark-sided Thrush (Zoothera marginata)


French: Grive à grand bec German: Langschnabel-Erddrossel Spanish: Zorzal flanquioscuro

Z[oothera]. marginata


, 1847,

Arakan, Myanmar


Genetic data#R indicate that this species and Z. monticola are sisters. Monotypic.


C Himalayas from E Uttarakhand E, discontinuously, to W Arunachal Pradesh, S Assam hills, Myanmar, NW Thailand, extreme S China (S Yunnan) and Indochina; non-breeding at lower altitudes in the Himalayas, including plains of Assam Valley.

Descriptive notes

24–25 cm; 81 g. A long-billed thrush with dark brown head contrasting with rufous-brown wings. Head to nape dark brown with buffy-white lores and eyering, blackish-... read more


Song a series of thin monotone whistles, softer and shorter than those of Z. dauma (race... read more


Breeds in broadleaf evergreen forest, edge and bamboo, mainly in damp areas near shaded rocky... read more

Food and feeding

Invertebrates. Forages like Z. monticola. Mainly terrestrial. Forages especially in damp areas; uses bill to dig holes in wet... read more


May–Aug throughout range; six juveniles in early Sept in N Thailand. Nest a neat mossy cup, lined with rootlets, placed up to 5 m... read more


Resident, with slight seasonal altitudinal movements. Winter vagrant in Bangladesh.

Status and conservation

Not globally threatened. Scarce to uncommon, but probably greatly overlooked owing to its cryptic plumage and behaviour. Scarce in Nepal; rare in China. Rare but fairly... read more

Recommended citation

Collar, N. (2020). Dark-sided Thrush (Zoothera marginata). 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 25 February 2020).