Myrmotherula menetriesii
Silhouette: Sheatherius · PhyloPic
In 3 days ~20% in a week ~40%
The grey antwren (Myrmotherula menetriesii) 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 antwren is 8.5 to 10.5 cm (3.3 to 4.1 in) long and weighs 8 to 9 g (0.28 to 0.32 oz). It is a smallish bird with a short tail. Adult males of the nominate subspecies M. m. menetriesii are almost entirely bluish gray, with lighter underparts than upperparts. Their wing coverts have white tips and a black bar just above them. Their tail feathers have narrow white tips. The center of their throat and upper breast are black, sometimes with gray tips on the throat feathers. Adult females have olive-tinged gray upperparts with somewhat darker wings. Their throat is buff and the rest of their underparts rich olive-buff. Juveniles look like a darker version... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Brownsberg Nature Park | 🇸🇷 Suriname | |
| 2 | Manu National Park | 🇵🇪 Peru | |
| 3 | Tambopata National Reserve | 🇵🇪 Peru | |
| 4 | Yasuní National Park | 🇪🇨 Ecuador | |
| 5 | Amacayacu National Natural Park | 🇨🇴 Colombia | |
| 6 | Cuyabeno Wildlife Reserve | 🇪🇨 Ecuador | |
| 7 | Amboró National Park | 🇧🇴 Bolivia | |
| 8 | Sierra de la Macarena National Park | 🇨🇴 Colombia |
With luck
About 10% of wildlife watchers report a Gray Antwren sighting in Yasuní National Park on a given day, based on 199 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 223rd most-seen of the 533 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–March, May, September–October and December
In those months about 10% of wildlife watchers report a Gray Antwren in Yasuní National Park on a given day, against under 5% in January, April, June–August and November, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Gray 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.
4th of 8
Of the 8 parks where we can rate Gray Antwren sightings, Yasuní National Park ranks 4th at about 10%. The best odds are in Brownsberg Nature Park (Suriname, about 20%), Manu National Park (Peru, about 10%) and Tambopata National Reserve (Peru, about 10%).
Same genus: Myrmotherula
The closest relatives of the Gray Antwren that you can see in Yasuní National Park (genus Myrmotherula, Typical Antwrens) are Amazonian Streaked-Antwren (about 10%), White-flanked Antwren (about 10%) and Pygmy Antwren (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Gray Antwren is recorded against all the birds logged in Yasuní National Park (199 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.
