Family Wrens (Troglodytidae)

Least Concern

Fawn-breasted Wren (Cantorchilus guarayanus)


French: Troglodyte des Guarayos German: Guarayoszaunkönig Spanish: Cucarachero de Guarayos

Troglodytes guarayana

d’Orbigny and Lafresnaye

, 1837,

Guarayos, Santa Cruz, Bolivia


Sometimes regarded as conspecific with C. leucotis, although vocalizations quite distinct. Monotypic.


Lowland areas of NE Bolivia (E Pando, E La Paz, E Cochabamba, Beni, Santa Cruz), adjacent Brazil (W & S Rondônia, SW Mato Grosso, NW Mato Grosso do Sul) and NE Paraguay.

Descriptive notes

13·5 cm; 13–14 g. Has narrow white supercilium behind eye; ear-coverts mottled grey-white and blackish; crown and upperparts unmarked medium-brown, becoming more... read more


Song, given antiphonally by both sexes, male contribution a repeated series of notes, e.g. “... read more


Várzea scrubland, and secondary growth, usually near water; to c. 400 m.

Food and feeding

No published information on food items. Forages in pairs during dry season, in small family groups of up to four individuals after breeding... read more


Little available information; few nests described. Nest with eggs in late Jan in Bolivia. Nest a rather flimsy domed structure with side... read more


Apparently sedentary.

Status and conservation

Not globally threatened. Locally common in parts of range; fairly common in E Bolivia (Santa Cruz).

Recommended citation

Kroodsma, D. & Brewer, D. (2018). Fawn-breasted Wren (Cantorchilus guarayanus). 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 17 November 2018).