Myrmotherula pacifica
Silhouette: Sheatherius · PhyloPic
In 3 days ~30% in a week ~60%
The Pacific antwren or Pacific streaked antwren (Myrmotherula pacifica) is a species of bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds". It is found in Colombia, Ecuador and Panama. The Pacific antwren was first described in 1911 by the Austrian ornithologist Carl Eduard Hellmayr. It was at one time considered to be conspecific with what are now the Guianan streaked antwren (M. surinamensis) and the Amazonian streaked antwren (M. multostriata) as the "streaked antwren". Differences in their plumage and voice indicate that they are separate species. The Pacific antwren is monotypic: No subspecies are recognized.
The Pacific antwren is 9 to 10 cm (3.5 to 3.9 in) long and weighs 8.5 to 10 g (0.30 to 0.35 oz). It is a smallish bird with a tiny tail. Adult males have a black and white streaked face. Their crown, back, and rump are black with white streaks. They have a narrow white patch between the shoulders. Their tail is black with white edges and tips to the feathers. Their wings are black with white tips on the coverts and white edges on the flight feathers. Their throat, breast, and belly are white and... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Utría National Natural Park | 🇨🇴 Colombia | |
| 2 | San Lorenzo Protected Forest | 🇵🇦 Panama | |
| 3 | Farallones de Cali National Natural Park | 🇨🇴 Colombia | |
| 4 | Darién National Park | 🇵🇦 Panama | |
| 5 | La Amistad International Park (Panama) | 🇵🇦 Panama | |
| 6 | Soberanía National Park | 🇵🇦 Panama |
With luck
About 10% of wildlife watchers report a Pacific Antwren sighting in San Lorenzo Protected Forest on a given day, based on 28 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 128th most-seen of the 249 birds we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
November
In that month about 30% of wildlife watchers report a Pacific Antwren in San Lorenzo Protected Forest on a given day, against under 5% in December and January, the lowest months. That is one of San Lorenzo Protected Forest's wettest months, with about 380 mm of rain against 65 mm in February.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Pacific Antwren sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 6
Of the 6 parks where we can rate Pacific Antwren sightings, San Lorenzo Protected Forest ranks 2nd at about 10%. The best odds are in Utría National Natural Park (Colombia, about 30%).
GBIF citizen-science records
It is estimated from how often the Pacific Antwren is recorded against all the birds logged in San Lorenzo Protected Forest (28 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.
