Family Typical Antbirds (Thamnophilidae)

Least Concern

Ancient Antwren (Herpsilochmus gentryi)


French: Grisin de Gentry German: Gelbbrust-Ameisenfänger Spanish: Tiluchí antiguo

Herpsilochmus gentryi

Whitney and Álvarez

, 1998,

P. J. Lores, Loreto, Peru


Morphological and vocal comparisons indicate sister relationship with H. stictocephalus#R. Similarity of vocalizations suggests that both might be closely related to the group centred on H. pileatus (which see). Monotypic.


Extreme E Ecuador (SE Pastaza) and N Peru (Loreto in Marañón, Tigre, Corrientes, Pucacuro and Pastaza drainages).

Descriptive notes

10–11 cm; 10·2–11 g. Male has black crown and nape, long yellowish supercilium, black loral stripe and broad postocular stripe; dark grey upperparts with variable... read more


Loudsong a moderately long series (e.g. 15 notes, 2·1 seconds) that increases and then... read more


Canopy and subcanopy of humid tropical lowland evergreen forest, to 200 m. Apparently restricted to... read more

Food and feeding

Little known. Feeds on insects, perhaps particularly adult and larval lepidopterans; probably also on spiders. Closely associated pair-... read more


Little known. Moult condition and skull ossification of two juveniles indicated fledging in Feb–Mar, as did family groups with... read more


Presumably resident.

Status and conservation

Not globally threatened (Least Concern). Only recently discovered, and still poorly known; appears to be locally common within its specialized habitat. Range 2200–... read more

Recommended citation

Zimmer, K., Isler, M.L. & Sharpe, C.J. (2019). Ancient Antwren (Herpsilochmus gentryi). 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 May 2019).