Arremon brunneinucha
Silhouette: Juan Camilo Cepeda-Duque · PhyloPic
In 3 days ~50% in a week ~80%
The chestnut-capped brushfinch (Arremon brunneinucha) is a species of bird in the family Passerellidae, the New World sparrows. It is found from Mexico to Peru. The chestnut-capped brushfinch was formally described in 1839 with the binomial Embernagra brunnei-nucha. It eventually was reassigned to genus Buarremon and the specific epithet revised to brunneinuchus. Genus Buarremon was still later merged into genus Atlapetes but further study resulted in Buarremon's being resurrected. In 2000 taxonomists again revised the specific epithet to its current brunneinucha. In 2008 taxonomists began merging Buarremon into Arremon.
The chestnut-capped brushfinch's further taxonomy is unsettled. The IOC, AviList, and BirdLife International's Handbook of the Birds of the World assign it these nine subspecies: Clements also sets A. b. apertus apart within the species, calling it the "chestnut-capped brushfinch (plain-breasted)". Clements groups the others as the "chestnut-capped brushfinch (chestnut-capped)".
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| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Volcán Barú National Park | 🇵🇦 Panama | |
| 2 | La Tigra National Park | 🇭🇳 Honduras | |
| 3 | Farallones de Cali National Natural Park | 🇨🇴 Colombia | |
| 4 | Monteverde Cloud Forest Reserve | 🇨🇷 Costa Rica | |
| 5 | El Triunfo | 🇲🇽 Mexico | |
| 6 | Los Quetzales National Park | 🇨🇷 Costa Rica | |
| 7 | Chirripó National Park | 🇨🇷 Costa Rica | |
| 8 | Poás Volcano National Park | 🇨🇷 Costa Rica | |
| 9 | Podocarpus National Park | 🇪🇨 Ecuador | |
| 10 | La Amistad International Park (Panama) | 🇵🇦 Panama | |
| 11 | Cusuco National Park | 🇭🇳 Honduras | |
| 12 | Celaque National Park | 🇭🇳 Honduras | |
| 13 | Braulio Carrillo National Park | 🇨🇷 Costa Rica | |
| 14 | Tapantí-Macizo de la Muerte National Park | 🇨🇷 Costa Rica | |
| 15 | Los Nevados National Natural Park | 🇨🇴 Colombia | |
| 16 | Henri Pittier National Park | 🇻🇪 Venezuela | |
| 17 | Irazú Volcano National Park | 🇨🇷 Costa Rica | |
| 18 | Darién National Park | 🇵🇦 Panama | |
| 19 | Arenal Volcano National Park | 🇨🇷 Costa Rica | |
| 20 | Chingaza National Natural Park | 🇨🇴 Colombia | |
| 21 | Rincón de la Vieja National Park | 🇨🇷 Costa Rica |
Possible
About 20% of wildlife watchers report a Chestnut-capped Brushfinch sighting in El Triunfo on a given day, based on 37 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 103rd most-seen of the 221 birds we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
April
In that month about 50% of wildlife watchers report a Chestnut-capped Brushfinch in El Triunfo on a given day, against about 10% in May, July–August and October–February, the lowest months. That is one of El Triunfo's driest months, with about 65 mm of rain against 420 mm in June. June has too few records to rate.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Chestnut-capped Brushfinch sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
5th of 21
Of the 21 parks where we can rate Chestnut-capped Brushfinch sightings, El Triunfo ranks 5th at about 20%. The best odds are in Volcán Barú National Park (Panama, about 40%), La Tigra National Park (Honduras, about 30%) and Farallones de Cali National Natural Park (Colombia, about 30%).
Same family: Passerellidae
The closest relatives of the Chestnut-capped Brushfinch that you can see in El Triunfo (family Passerellidae, New World Sparrows) are White-eared Ground-Sparrow (about 30%), Common Chlorospingus (about 30%) and Rufous-collared Sparrow (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Chestnut-capped Brushfinch is recorded against all the birds logged in El Triunfo (37 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.
