Family New World Sparrows (Passerellidae)

Least Concern

Sooty-faced Finch (Arremon crassirostris)


French: Tohi masqué German: Dickschnabel-Buschammer Spanish: Cerquero carisucio

Buarremon crassirostris


, 1865,

Barranca, Costa Rica


Sometimes considered conspecific with A. castaneiceps; the two are sister-species#R. Proposed race eurous (described from Cerro Tacarcuna, in E Panama), supposedly duller and with darker crown, known from only a single specimen; considered untenable. Monotypic.


Mountains of C Costa Rica (Aguacate Mts) S through Panama (Bocas del Toro, Chiriquí, Veraguas, Coclé and E Darién) to adjacent W Colombia (Cerro Tacarcuna).

Descriptive notes

15·0–17·1 cm; 37–40·5 g. Fairly large. Has crown rusty, side of face and throat blackish-grey, white submoustachial stripe; upperparts dark olive-green, upperwing and tail... read more


Song high-pitched, thin, emphatic “pseee-psééét”; also high-pitched, thin whistled “see see seeya... read more


Dense, humid tropical forests and thickets, at 600–2340 m. Found in dense undergrowth in ravines... read more

Food and feeding

Diet includes a variety of insects, spiders (Araneae), also berries. Forages on and near ground; hops over the ground, flicking wings and... read more


One nest found, in Costa Rica in May. Nest a domed structure with side entrance, made from moss, fern leaves and spike-moss (... read more



Status and conservation

Not globally threatened. Restricted-range species: present in Costa Rica and Panama Highlands EBA and Darién Highlands EBA. Uncommon and local. Probably overlooked, as it is... read more

Recommended citation

Rising, J. & Jaramillo, A. (2020). Sooty-faced Finch (Arremon crassirostris). 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 21 February 2020).