Chamaeza meruloides
Silhouette: Abraão B. Leite · PhyloPic
In 3 days ~10% in a week ~20%
The cryptic antthrush (Chamaeza meruloides), also known as Such's antthrush, is a species of bird in the family Formicariidae. It is endemic to the Atlantic Forest in southeastern Brazil. Although the cryptic antthrush was first described almost 200 years ago, it was long overlooked (hence, cryptic) due to confusion with the rufous-tailed antthrush (C. ruficauda) and short-tailed antthrush (C. campanisona), which are found in the same region. Its identity as a separate species was recognized in 1992.
When Nicholas Aylward Vigors described this species in 1825, he based it on two specimens collected by George Such, and this is the reason for the species' other common name, Such's antthrush. The cryptic antthrush is monotypic.
The cryptic antthrush is 19 to 19.5 cm (7.5 to 7.7 in) long and weighs about 66 to 77 g (2.3 to 2.7 oz). The sexes are alike. Adults have a red-brown forecrown and brown crown. They have white or buff lores and a white streak behind their eye. Their upperparts are mostly olive brown with a reddish rump. Their tail is brown with a black band near the end and thin buffy tips on the feathers. Their throat is white... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Itatiaia National Park | 🇧🇷 Brazil | |
| 2 | Serra dos Órgãos National Park | 🇧🇷 Brazil |
Rare
Under 5% of wildlife watchers report a Such's Antthrush sighting in Serra dos Órgãos National Park on a given day, based on 19 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 252nd most-seen of the 336 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
February and November
In those months about 10% of wildlife watchers report a Such's Antthrush in Serra dos Órgãos National Park on a given day, against under 5% in March–October and December–January, the lowest months. Those are among Serra dos Órgãos National Park's wettest months, with about 280 mm of rain a month against 50 mm in July.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Such's Antthrush sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 2
Of the 2 parks where we can rate Such's Antthrush sightings, Serra dos Órgãos National Park ranks 2nd at under 5%. The best odds are in Itatiaia National Park (Brazil, about 20%).
GBIF citizen-science records
It is estimated from how often the Such's Antthrush is recorded against all the birds logged in Serra dos Órgãos National Park (19 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.
