Herpsilochmus frater
Silhouette: Sheatherius · PhyloPic
In 3 days ~10%
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 |
Rare
Under 5% of wildlife watchers report a Rusty-winged Antwren sighting in João Pessoa on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 88th most-seen of the 99 birds we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
September
In that month about 10% of wildlife watchers report a Rusty-winged Antwren in João Pessoa on a given day, against under 5% in October to August, the lowest months. That is one of João Pessoa's driest months, with about 45 mm of rain against 230 mm in June.
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.
Only João Pessoa, in our data
João Pessoa is the only city on Wallace's Line with enough records to rate Rusty-winged Antwren sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Rusty-winged Antwren is recorded against all the birds logged in João Pessoa (7 verified sightings), 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.
