Basileuterus melanotis
Silhouette: Andy Wilson · PhyloPic
In 3 days ~20% in a week ~30%
The black-eared warbler or Costa Rican warbler (Basileuterus melanotis) is a species of bird in the family Parulidae, the New World warblers. It is found in Costa Rica and Panama. The black-eared warbler was formally described in 1868 with its current binomial Basileuterus melanotis. For much of the twentieth century it was treated as a subspecies of the three-striped warbler (M. tristriatus). It and other subspecies were recognized as full species based on studies published in 2012 and 2014.
The black-eared warbler is monotypic. The black-eared warbler is about 13 cm (5.1 in) long. The sexes have the same plumage. Adults have a buff-orange crown stripe, a long and wide black stripe below it, and a long pale grayish white supercilium with a buff tinge below that. Their lores and ear coverts are blackish and they have a pale buffy white arc under the eye. Their ear coverts have pale yellow bottom and rear edges. Their upperparts, wings, and tail are olive-gray. Their throat is whitish that becomes mostly pale olive-buff on the breast and a yellower olive-buff on the belly. The sides of their breast and their flanks have an olive-gray... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Monteverde Cloud Forest Reserve | 🇨🇷 Costa Rica | |
| 2 | Braulio Carrillo National Park | 🇨🇷 Costa Rica | |
| 3 | Chirripó National Park | 🇨🇷 Costa Rica | |
| 4 | Volcán Barú National Park | 🇵🇦 Panama | |
| 5 | Arenal Volcano National Park | 🇨🇷 Costa Rica | |
| 6 | La Amistad International Park (Panama) | 🇵🇦 Panama | |
| 7 | Tapantí-Macizo de la Muerte National Park | 🇨🇷 Costa Rica | |
| 8 | Poás Volcano National Park | 🇨🇷 Costa Rica | |
| 9 | Rincón de la Vieja National Park | 🇨🇷 Costa Rica | |
| 10 | Irazú Volcano National Park | 🇨🇷 Costa Rica | |
| 11 | Los Quetzales National Park | 🇨🇷 Costa Rica | |
| 12 | Tenorio Volcano National Park | 🇨🇷 Costa Rica |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San José | 🇨🇷 Costa Rica |
With luck
About 10% of wildlife watchers report a Costa Rican Warbler sighting in Chirripó National Park on a given day, based on 82 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 153rd most-seen of the 332 birds we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
November
In that month about 20% of wildlife watchers report a Costa Rican Warbler in Chirripó National Park on a given day, against under 5% in January to September, the lowest months. That is one of Chirripó National Park's wettest months, with about 450 mm of rain against 75 mm in February.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Costa Rican Warbler sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 12
Of the 12 parks where we can rate Costa Rican Warbler sightings, Chirripó National Park ranks 3rd at about 10%. The best odds are in Monteverde Cloud Forest Reserve (Costa Rica, about 30%) and Braulio Carrillo National Park (Costa Rica, about 10%).
Same genus: Basileuterus
The closest relatives of the Costa Rican Warbler that you can see in Chirripó National Park (genus Basileuterus) are Golden-crowned Warbler (about 10%) and Black-cheeked Warbler (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Costa Rican Warbler is recorded against all the birds logged in Chirripó National Park (82 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.
