Cercomacra cinerascens
Silhouette: Sheatherius · PhyloPic
In 3 days ~30% in a week ~50%
The grey antbird (Cercomacra cinerascens) is a species of 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 grey antbird was described by the English zoologist Philip Sclater in 1857 from a specimen obtained near the Rio Napo in Ecuador. He coined the binomial name Formicivora cinerascens. The specific epithet is Late Latin meaning "ashen". This antbird is now placed in the genus Cercomacra that was introduced by Sclater in 1858.
The grey antbird has these four subspecies: Some early twentieth century authors treated C. c. sclateri as a separate species but by the middle of the century it had obtained its current status. More recently some authors have suggested that it and C. c. iterata might be species in their own right.
The grey antbird is 13 to 15 cm (5.1 to 5.9 in) long and weighs 14 to 18 g (0.49 to 0.63 oz). Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Brownsberg Nature Park | 🇸🇷 Suriname | |
| 2 | Amacayacu National Natural Park | 🇨🇴 Colombia | |
| 3 | Yasuní National Park | 🇪🇨 Ecuador | |
| 4 | Anavilhanas National Park | 🇧🇷 Brazil | |
| 5 | Tambopata National Reserve | 🇵🇪 Peru | |
| 6 | Manu National Park | 🇵🇪 Peru | |
| 7 | Sierra de la Macarena National Park | 🇨🇴 Colombia | |
| 8 | Cuyabeno Wildlife Reserve | 🇪🇨 Ecuador |
With luck
About 10% of wildlife watchers report a Gray Antbird sighting in Yasuní National Park on a given day, based on 361 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 156th 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.
March and August
In those months about 20% of wildlife watchers report a Gray Antbird in Yasuní National Park on a given day, against under 5% in January, April and September, the lowest months.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Gray Antbird sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 8
Of the 8 parks where we can rate Gray Antbird sightings, Yasuní National Park ranks 3rd at about 10%. The best odds are in Brownsberg Nature Park (Suriname, about 50%) and Amacayacu National Natural Park (Colombia, about 10%).
GBIF citizen-science records
It is estimated from how often the Gray Antbird is recorded against all the birds logged in Yasuní National Park (361 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.
