Myrmeciza hemimelaena
Silhouette: Sheatherius · PhyloPic
In 3 days ~60% in a week ~90%
The southern chestnut-tailed antbird, or chestnut-tailed antbird, (Sciaphylax hemimelaena) is a species of passerine bird in subfamily Thamnophilinae of family Thamnophilidae, the "typical antbirds". It is found in Bolivia, Brazil, and Peru.
The southern chestnut-tailed antbird has a complicated taxonomic history. It was originally described by the English zoologist Philip Sclater in 1857 and given the binomial name Myrmeciza emimelaena. It later acquired the English name "chestnut-tailed antbird" and its current specific epithet hemimelaena. By the early twentieth century it had two recognized subspecies. That subspecies was much later recognized as the separate species M. castanea. Some taxonomic systems call it the "northern chestnut-tailed antbird" and the reduced M. hemimelaena the "southern chestnut-tailed antbird". Other systems retained "chestnut-tailed antbird" for M. hemimelaena and called the newly-separated M. castanea "Zimmer's antbird".
A molecular phylogenetic study published in 2013 found that genus Myrmeciza, as then defined, was polyphyletic. In the resulting rearrangement to... Wikipedia →
Recording0:15
Peru · 2010
© dbeadle · iNaturalist · CC BY-NC 4.0
Recording0:34
Brazil · 2024
© Luciano Bernardes · iNaturalist · CC BY-NC 4.0
Recording0:25
Brazil · 2021
© Marllus Rafael Almeida · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Tambopata National Reserve | 🇵🇪 Peru | |
| 2 | Manu National Park | 🇵🇪 Peru | |
| 3 | Amboró National Park | 🇧🇴 Bolivia |
Possible
About 30% of wildlife watchers report a Chestnut-tailed Antbird sighting in Tambopata National Reserve on a given day, based on 932 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 26th most-seen of the 550 birds we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
July
In that month about 40% of wildlife watchers report a Chestnut-tailed Antbird in Tambopata National Reserve on a given day, against about 10% in January and October, the lowest months. That is one of Tambopata National Reserve's driest months, with about 45 mm of rain against 420 mm in February.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Chestnut-tailed Antbird sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 3 parks where we can rate Chestnut-tailed Antbird sightings, Tambopata National Reserve has the highest daily chance: about 30%. Next come Manu National Park (Peru, about 20%) and Amboró National Park (Bolivia, about 10%).
Same genus: Myrmeciza
The closest relatives of the Chestnut-tailed Antbird that you can see in Tambopata National Reserve (genus Myrmeciza) are Plumbeous Antbird (about 10%), Goeldi's Antbird (about 10%) and Black-throated Antbird (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Chestnut-tailed Antbird is recorded against all the birds logged in Tambopata National Reserve (932 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.
