Formicivora grantsaui
Silhouette: Sheatherius · PhyloPic
In 3 days ~80% in a week >90%
The Sincora antwren (Formicivora grantsaui) is a small, Vulnerable species of passerine bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds". It is endemic to a small area of eastern Brazil. The Sincora antwren was first described in 2007 from specimens collected near the small town of Mucugê in the state of Bahia, eastern Brazil. The specific epithet commemorates the German-born naturalist Rolf Grantsau who had collected a specimen in 1965. Coincidentally, another species was also described from the same region in 2007, the Diamantina tapaculo (Scytalopus diamantinensis).
The Sincora antwren is monotypic. The Sincora antwren is 12 to 13 cm (4.7 to 5.1 in) long and weighs 8.5 to 11.5 g (0.30 to 0.41 oz). Adult males have a white supercilium that extends down the neck and along the sides of the breast and belly. Their crown and upperparts are generally deep brown; the color is grayer on the forehead and brighter on the mantle and scapulars. Their wing coverts are black with white spots on the ends and their flight feathers are dark brownish gray with thin brown outer edges. Their tail feathers are gray and... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Chapada Diamantina National Park | 🇧🇷 Brazil |
More parks will be added in future updates.
Likely
About 40% of wildlife watchers report a Sincorá Antwren sighting in Chapada Diamantina National Park on a given day, based on 270 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 19th most-seen of the 271 birds we can rate there. Over three days the chance rises to about 80%, and over a week to over 90%, if each day is a fresh chance.
September
In that month about 60% of wildlife watchers report a Sincorá Antwren in Chapada Diamantina National Park on a given day, against about 30% in January, March and May–July, the lowest months. That is one of Chapada Diamantina National Park's driest months, with about 55 mm of rain against 180 mm in November.
Between 5 and 8 am
Across all the parks we cover, that three-hour window holds the most Sincorá Antwren sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Chapada Diamantina National Park, in our data
Chapada Diamantina National Park is the only park on Wallace's Line with enough records to rate Sincorá Antwren sightings: about 40% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Sincorá Antwren is recorded against all the birds logged in Chapada Diamantina National Park (270 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.
