Basileuterus belli
Silhouette: Andy Wilson · PhyloPic
In 3 days ~40% in a week ~70%
The golden-browed warbler (Basileuterus belli) is a species of bird in the family Parulidae, the New World warblers. It is found in El Salvador, Guatemala, Honduras, and Mexico. The golden-browed warbler was formally described in 1841 with the binomial Muscicapa belli and the English name "Bell's Fly Catcher". It has these five subspecies:
The sexes have the same plumage. Adults of the nominate subspecies B. b. belli have blackish lores and a rufous crown and ear coverts with a thin black line below the crown and a long bright yellow supercilium between the black line and the ear coverts. Their nape, upperparts, wings, and tail are bright olive-green. Their throat and underparts are mostly bright yellow with an olive wash on the sides of the breast and their flanks. Juveniles have an olive-brown head and upperparts. Their greater and median upperwing coverts have cinnamon-buff tips that show as two wing... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Reserva de la Biosfera Mariposa Monarca | 🇲🇽 Mexico | |
| 2 | El Triunfo | 🇲🇽 Mexico | |
| 3 | Celaque National Park | 🇭🇳 Honduras |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Mexico City | 🇲🇽 México |
Possible
About 20% of wildlife watchers report a Golden-browed Warbler sighting in El Triunfo on a given day, based on 28 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 117th most-seen of the 221 birds we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
April
In that month about 40% of wildlife watchers report a Golden-browed Warbler in El Triunfo on a given day, against under 5% in November, the lowest month. 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 9 am and noon
Across all the parks we cover, that three-hour window holds the most Golden-browed 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.
2nd of 3
Of the 3 parks where we can rate Golden-browed Warbler sightings, El Triunfo ranks 2nd at about 20%. The best odds are in Reserva de la Biosfera Mariposa Monarca (Mexico, about 30%).
Same genus: Basileuterus
The closest relatives of the Golden-browed Warbler that you can see in El Triunfo (genus Basileuterus) are Rufous-capped Warbler (about 50%), Golden-crowned Warbler (about 30%) and Fan-tailed Warbler (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Golden-browed Warbler is recorded against all the birds logged in El Triunfo (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.
