Thamnomanes caesius
Silhouette: Sheatherius · PhyloPic
In 3 days ~30% in a week ~50%
The cinereous antshrike (Thamnomanes caesius) is an insectivorous bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds". It is found in Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, and Venezuela.
The cinereous antshrike was described by the Dutch zoologist Coenraad Jacob Temminck in 1820 and given the binomial name Muscicapa caesius. It is now placed in the genus Thamnomanes which was introduced by the German ornithologist Jean Cabanis in 1847. The specific epithet caesius is the Latin for "bluish gray".
The cinereous antshrike and the bluish-slate antshrike (T. schistogynus) were treated by some authors in the early twentieth century as conspecific. They now are considered a superspecies. The cinereous antshrike has these five subspecies:
The cinereous antshrike is 14 to 15 cm (5.5 to... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Brownsberg Nature Park | 🇸🇷 Suriname | |
| 2 | Yasuní National Park | 🇪🇨 Ecuador | |
| 3 | Amacayacu National Natural Park | 🇨🇴 Colombia | |
| 4 | Anavilhanas National Park | 🇧🇷 Brazil | |
| 5 | Cuyabeno Wildlife Reserve | 🇪🇨 Ecuador |
With luck
About 10% of wildlife watchers report a Cinereous Antshrike sighting in Yasuní National Park on a given day, based on 298 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 178th most-seen of the 533 birds we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
May to March
In those months about 10% of wildlife watchers report a Cinereous Antshrike in Yasuní National Park on a given day, against under 5% in April, the lowest month.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Cinereous Antshrike sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 5
Of the 5 parks where we can rate Cinereous Antshrike sightings, Yasuní National Park ranks 2nd at about 10%. The best odds are in Brownsberg Nature Park (Suriname, about 40%).
GBIF citizen-science records
It is estimated from how often the Cinereous Antshrike is recorded against all the birds logged in Yasuní National Park (298 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.
