Family Typical Antbirds (Thamnophilidae)

Least Concern

Pacific Antwren (Myrmotherula pacifica)


French: Myrmidon du Pacifique German: Chocó-Strichelameisenschlüpfer Spanish: Hormiguerito del Pacífico

Myrmotherula surinamensis pacifica


, 1911,

Buenaventura, Valle del Cauca, Colombia


Member of the “streaked antwren assemblage” (see M. brachyura). Until recently considered conspecific with M. surinamensis and M. multostriata, but vocal and plumage characters indicate three separate species#R. Appears most closely related to M. cherriei, from which differs mainly in female’s lack of streaks on darker forehead and underparts, male’s pale lower mandible, and voice (e.g. loudsong accelerating throughout). Monotypic.


Panama (E from E Bocas del Toro on Caribbean slope, from Panamá Province on Pacific slope), W & N Colombia (Pacific slope, N base of Andes E to Santander, and Magdalena Valley S to Cundinamarca) and W Ecuador (S to E Guayas, Chimborazo and NW Azuay).

Descriptive notes

9–10 cm; 8·5–10 g. Male is black above, streaked white, wing-coverts tipped white, flight-feathers edged white, white interscapular patch, tail feathers edged and... read more


Short series of sharp, unmusical notes that rise slightly in pitch and accelerate slightly. Calls... read more


Understorey and mid-storey of lowland and foothill evergreen-forest edge, riparian thickets, and... read more

Food and feeding

Little published. Feeds on small insects and spiders. Pairs or individuals move actively through leafy branches of trees and shrubs, mostly... read more


Jan–Jul in Panama; a nest in Mar in Colombia. Nest a thin-walled cup of loosely woven green vines, slender filaments resembling... read more


Presumed resident.

Status and conservation

Not globally threatened. Fairly common throughout its range, which does include several protected areas: examples of these are Soberanía and Darién National Parks, Comarca... read more

Recommended citation

Zimmer, K. & Isler, M.L. (2020). Pacific Antwren (Myrmotherula pacifica). 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 9 April 2020).