Myrmotherula menetriesii
Silhouette: Sheatherius · PhyloPic
In 3 days ~10% in a week ~20%
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 |
Rare
Under 5% of wildlife watchers report a Gray Antwren sighting in Amacayacu National Natural Park on a given day, based on 19 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 320th most-seen of the 436 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.
January and September
In those months about 10% of wildlife watchers report a Gray Antwren in Amacayacu National Natural Park on a given day, against under 5% in February–August and October–December, 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.
5th of 8
Of the 8 parks where we can rate Gray Antwren sightings, Amacayacu National Natural Park ranks 5th at under 5%. 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 Amacayacu National Natural Park (genus Myrmotherula, Typical Antwrens) are Pygmy Antwren (about 10%), White-flanked Antwren (about 10%) and Moustached 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 Amacayacu National Natural 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.
