Microcerculus marginatus
Silhouette: Matt Wilkins · PhyloPic
In 3 days ~10%
The southern nightingale-wren (Microcerculus marginatus), also known as the scaly-breasted wren, is a species of bird in the family Troglodytidae. It is found in Bolivia, Brazil, Colombia, Costa Rica, Ecuador, Panama, Peru, and Venezuela.
The southern nightingale-wren forms a species pair with the northern nightingale-wren (Microcerculus philomela) and was in the past considered conspecific with it. It is currently treated as a species in its own right by the International Ornithological Committee (IOC) and the Clements taxonomy, though under different English names.
The southern nightingale-wren has the six subspecies listed below. Subspecies M. m. luscinia is treated by some taxonomists as a separate species. The nominate subspecies M. m. marginatus is also sometimes considered a separate species or even two species divided by the Amazon River.
The southern nightingale-wren's subspecies are: Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San José | 🇨🇷 Costa Rica |
Rare
Under 5% of wildlife watchers report a Scaly-breasted Wren sighting in Tapantí-Macizo de la Muerte National Park on a given day, based on 160 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 283rd most-seen of the 467 birds we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
October
In that month about 10% of wildlife watchers report a Scaly-breasted Wren in Tapantí-Macizo de la Muerte National Park on a given day, against under 5% in November to September, the lowest months. That is one of Tapantí-Macizo de la Muerte National Park's wettest months, with about 570 mm of rain against 160 mm in February.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Scaly-breasted Wren sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
20th of 29
Of the 29 parks where we can rate Scaly-breasted Wren sightings, Tapantí-Macizo de la Muerte National Park ranks 20th at under 5%. The best odds are in Henri Pittier National Park (Venezuela, about 40%), Chagres National Park (Panama, about 20%) and Chirripó National Park (Costa Rica, about 20%).
GBIF citizen-science records
It is estimated from how often the Scaly-breasted Wren is recorded against all the birds logged in Tapantí-Macizo de la Muerte National Park (160 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.
