Basileuterus belli
Silhouette: Andy Wilson · PhyloPic
In 3 days ~60% in a week ~90%
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 30% of wildlife watchers report a Golden-browed Warbler sighting in Reserva de la Biosfera Mariposa Monarca on a given day, based on 62 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 25th most-seen of the 103 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.
January and November
In those months about 40% of wildlife watchers report a Golden-browed Warbler in Reserva de la Biosfera Mariposa Monarca on a given day, against about 20% in February–March and October, the lowest months. Those are among Reserva de la Biosfera Mariposa Monarca's driest months, with about 30 mm of rain a month against 270 mm in July. April and June–September have 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.
Yes
Of the 3 parks where we can rate Golden-browed Warbler sightings, Reserva de la Biosfera Mariposa Monarca has the highest daily chance: about 30%. Next come El Triunfo (Mexico, about 20%) and Celaque National Park (Honduras, under 5%).
Same family: Parulidae
The closest relatives of the Golden-browed Warbler that you can see in Reserva de la Biosfera Mariposa Monarca (family Parulidae, New World Warblers) are Red Warbler (about 50%), Slate-throated Redstart (about 50%) and Yellow-rumped Warbler (about 50%), 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 Reserva de la Biosfera Mariposa Monarca (62 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.
