Chamaeza ruficauda
Silhouette: Abraão B. Leite · PhyloPic
In 3 days ~20% in a week ~40%
The rufous-tailed antthrush or Brazilian antthrush (Chamaeza ruficauda) is a species of bird in the family Formicariidae. It is found in Argentina and Brazil. The rufous-tailed antthrush was formerly treated as conspecific with Schwartz's antthrush (C. turdina). In addition, what is now the cryptic antthrush (C. meruloides) was long confused with the rufous-tailed and the short-tailed antthrush (C. campanisona); their geographic ranges overlap though they generally are found at different elevations. Their differences were not fully recognized until 1992.
In the late twentieth and early twenty-first centuries several authors and taxonomic systems called Chamaeza ruficauda the Brazilian Antthrush. The rufous-tailed antthrush is monotypic. The rufous-tailed antthrush is 19 to 20 cm (7.5 to 7.9 in) long and weighs about 63 to 125 g (2.2 to 4.4 oz). The sexes are alike. Adults have a rufescent brown crown. They have white lores, a white streak behind their eye, and a whitish streak on the side of their neck. Their upperparts and wings are mostly rufescent brown with a less rufescent rump and uppertail coverts. Their tail is entirely rufescent... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Itatiaia National Park | 🇧🇷 Brazil | |
| 2 | Serra dos Órgãos National Park | 🇧🇷 Brazil |
With luck
About 10% of wildlife watchers report a Rufous-tailed Antthrush sighting in Serra dos Órgãos National Park on a given day, based on 53 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 178th most-seen of the 336 birds we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
February
In that month about 20% of wildlife watchers report a Rufous-tailed Antthrush in Serra dos Órgãos National Park on a given day, against under 5% in January, June–July and November, the lowest months. That is one of Serra dos Órgãos National Park's wettest months, with about 260 mm of rain against 50 mm in July.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Rufous-tailed Antthrush sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 2 parks where we can rate Rufous-tailed Antthrush sightings, Serra dos Órgãos National Park ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Itatiaia National Park (Brazil, about 10%).
GBIF citizen-science records
It is estimated from how often the Rufous-tailed Antthrush is recorded against all the birds logged in Serra dos Órgãos National Park (53 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.
