Myrmotherula brachyura
Silhouette: Sheatherius · PhyloPic
In 3 days ~10% in a week ~20%
The pygmy antwren (Myrmotherula brachyura) 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 pygmy antwren is monotypic. It previously had two subspecies, but in the 21st century one of them was treated as a separate species by some authors and currently (2024) by worldwide taxonomic systems as one of two subspecies of the moustached antwren (M. ignota).
The pygmy antwren is 7.5 to 8.5 cm (3.0 to 3.3 in) long and weighs 6 to 8 g (0.21 to 0.28 oz). It is a small bird with a tiny tail. Adult males have a black streak through the eye, white cheeks, and a thin black "moustache". Their crown, back, rump, and tail are black with thin white streaks that are faintly yellow except on the crown. They have a white patch between the shoulders. Their wings are black with white tips on the coverts and white edges on the flight feathers. Their throat is white and the rest of their underparts are yellow with sparse black streaks on the sides. Adult females have a buff tinge on the cheeks and crown... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Brownsberg Nature Park | 🇸🇷 Suriname | |
| 2 | Manu National Park | 🇵🇪 Peru | |
| 3 | Amacayacu National Natural Park | 🇨🇴 Colombia | |
| 4 | Cuyabeno Wildlife Reserve | 🇪🇨 Ecuador | |
| 5 | Yasuní National Park | 🇪🇨 Ecuador | |
| 6 | Tambopata National Reserve | 🇵🇪 Peru | |
| 7 | Anavilhanas National Park | 🇧🇷 Brazil | |
| 8 | Amboró National Park | 🇧🇴 Bolivia |
Rare
Under 5% of wildlife watchers report a Pygmy Antwren sighting in Anavilhanas National Park on a given day, based on 11 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 219th most-seen of the 291 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 June
In those months about 10% of wildlife watchers report a Pygmy Antwren in Anavilhanas National Park on a given day, against under 5% in February–May and July–December, the lowest months.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Pygmy 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.
7th of 8
Of the 8 parks where we can rate Pygmy Antwren sightings, Anavilhanas National Park ranks 7th at under 5%. The best odds are in Brownsberg Nature Park (Suriname, about 20%), Manu National Park (Peru, about 20%) and Amacayacu National Natural Park (Colombia, about 10%).
Same genus: Myrmotherula
The closest relatives of the Pygmy Antwren that you can see in Anavilhanas National Park (genus Myrmotherula, Typical Antwrens) are Klages's Antwren (about 30%), Leaden Antwren (about 30%) and Cherrie's Antwren (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Pygmy Antwren is recorded against all the birds logged in Anavilhanas National Park (11 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.
