Herpsilochmus frater
Silhouette: Sheatherius · PhyloPic
In 3 days ~40% in a week ~70%
The rusty-winged antwren (Herpsilochmus frater) is a species of bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds". It is found in Bolivia, Brazil, Colombia, Ecuador, Guyana, Panama, Peru, Suriname, and Venezuela.
The rusty-winged antwren's taxonomy is unsettled. Before 2020 the American Ornithological Society, the International Ornithological Committee, and the Clements taxonomy treated it and what is now the rufous-margined antwren (Herpsilochmus rufimarginatus) as a single species, the rufous-winged antwren with the binomial H. rufimarginatus.
These systems assigned it four subspecies: Beginning in 2020 these systems split the rufous-winged antwren into the two current species. They assigned subspecies exiguus and frater to the rusty-winged antwren and merged scapularis into rufimarginatus as the monotypic rufous-margined antwren.
However, by 2018 BirdLife International's Handbook of the Birds of the World (HBW) had split the rufous-winged antwren into the "northern rufous-winged... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Darién National Park | 🇵🇦 Panama | |
| 2 | Henri Pittier National Park | 🇻🇪 Venezuela | |
| 3 | Amboró National Park | 🇧🇴 Bolivia | |
| 4 | Sierra de la Macarena National Park | 🇨🇴 Colombia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | João Pessoa | 🇧🇷 Brazil |
With luck
About 10% of wildlife watchers report a Rusty-winged Antwren sighting in Darién National Park on a given day, based on 68 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 85th most-seen of the 397 birds we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
September
In that month about 30% of wildlife watchers report a Rusty-winged Antwren in Darién National Park on a given day, against under 5% in February, the lowest month.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Rusty-winged Antwren sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 4 parks where we can rate Rusty-winged Antwren sightings, Darién National Park has the highest daily chance: about 10%. Next come Henri Pittier National Park (Venezuela, under 5%) and Amboró National Park (Bolivia, under 5%).
Same family: Thamnophilidae
The closest relatives of the Rusty-winged Antwren that you can see in Darién National Park (family Thamnophilidae, Typical Antbirds) are Western Slaty-Antshrike (about 50%), Chestnut-backed Antbird (about 40%) and Dot-winged Antwren (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Rusty-winged Antwren is recorded against all the birds logged in Darién National Park (68 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
