- Herpsilochmus frater
Identification
10-12 cm.
- Upperside mostly grey in male, more olive to brownish-grey in female
- Folded wings have coverts black with white edges forming two white wing bars on black background, and a bright rufous panel from the edges of the flight feathers
- Tail dark grey with white tip and outer edge
- Underside pale yellow-whitish
- Head is mostly mottled medium grey and with black stripe through eye; this is well separated by a white supercilium from the crown which is black in male and rufous-brown in female
Similar species
Other Antwrens and Rufous-winged Tyrannulet.
Distribution
From easternmost Panama, Colombia, Venezuela, southern Guyana, central Suriname, and northern and northeastern Brazil, as well as from Colombia south to northern Bolivia, east to southwestern Amazonian Brazil.
The current range map indicates several populations are well isolated from other populations.
Taxonomy
This is a monotypic species[1].
Subspecies
Two subspecies are recognized[1].
- H. f. exiguus - central and eastern Panama and adjacent northwestern Colombia.
- H. f. frater - base of Andes from Colombia south to northern Bolivia, east to southwestern Amazonian Brazil (Rondônia and northern Mato Grosso); Venezuela; southern Guyana, central Suriname, and northern Brazil (northern Roraima); northeastern Brazil (southern Pará and western Maranhão, and Paraíba south to Alagoas.
Habitat
Forest and edges in foothills and rarely lowland. Varies regionally as to whether the forest is river-edge, humid foothill forest or in more dry or deciduous types of forest.
Behaviour
Food likely consists of mainly smaller invertebrates. In many areas seems to prefer searching for food rather high into canopy.
Vocalisation
References
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, J. A. Gerbracht, D. Lepage, B. L. Sullivan, and C. L. Wood. 2021. The eBird/Clements checklist of Birds of the World: v2021. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/
- Greeney, H. F. and P. F. D. Boesman (2021). Rusty-winged Antwren (Herpsilochmus frater), version 0.6. In Birds of the World (P. G. Rodewald and B. K. Keeney, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.ruwant3.00.6
Recommended Citation
- BirdForum Opus contributors. (2025) Rusty-winged Antwren. In: BirdForum, the forum for wild birds and birding. Retrieved 4 May 2025 from https://www.birdforum.net/opus/Rusty-winged_Antwren
External Links
GSearch checked for 2020 platform.
