Myiodynastes luteiventris
Silhouette: Emily Willoughby · PhyloPic
In 3 days ~30% in a week ~60%
The sulphur-bellied flycatcher (Myiodynastes luteiventris) is a large member of the family Tyrannidae, the tyrant flycatchers. It is regularly found from southern Arizona in the United States south to Bolivia and occurs casually or as a vagrant further north, east, and south of its usual range.
The sulphur-bellied flycatcher is monotypic. Because there is much clinal variation in size and plumage, several subspecies have been proposed but not accepted. The sulphur-bellied flycatcher and the streaked flycatcher (M. maculatus) are sister species.
The sulphur-bellied flycatcher is about 20 cm (7.9 in) long and weighs about 40 to 57 g (1.4 to 2.0 oz). The sexes have the same plumage. Adults have a pale hoary gray or grayish white forecrown and supercilium. They have a brownish gray to olive crown with blackish streaks and a large, usually hidden, canary-yellow patch in the center. They have dusky lores; the color extends to the ear coverts and forms a dark "mask". Below the mask is a wide white stripe with thin dusky streaks and below that a thin dusky stripe. Their nape and upperparts to the upper rump are light olive with a buffy tinge... Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San Pedro Sula | 🇭🇳 Honduras | |
| 2 | Monterrey | 🇲🇽 México | |
| 3 | San Salvador | 🇸🇻 El Salvador | |
| 4 | San José | 🇨🇷 Costa Rica | |
| 5 | Bogota | 🇨🇴 Colombia | |
| 6 | Miami | 🇺🇸 United States | |
| 7 | Mexico City | 🇲🇽 México | |
| 8 | Quito | 🇪🇨 Ecuador | |
| 9 | Medellín | 🇨🇴 Colombia | |
| 10 | Panama City | 🇵🇦 Panama |
With luck
About 10% of wildlife watchers report a Sulphur-bellied Flycatcher sighting in El Triunfo on a given day, based on 32 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 143rd most-seen of the 221 birds we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
April
In that month about 40% of wildlife watchers report a Sulphur-bellied Flycatcher in El Triunfo on a given day, against under 5% in November and December, 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 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Sulphur-bellied Flycatcher sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
9th of 51
Of the 51 parks where we can rate Sulphur-bellied Flycatcher sightings, El Triunfo ranks 9th at about 10%. The best odds are in Tikal National Park (Guatemala, about 20%), Cañón del Sumidero National Park (Mexico, about 20%) and Montes Azules Biosphere Reserve (Mexico, about 10%).
Same family: Tyrannidae
The closest relatives of the Sulphur-bellied Flycatcher that you can see in El Triunfo (family Tyrannidae, Tyrant Flycatchers) are Social Flycatcher (about 60%), Dusky-capped Flycatcher (about 50%) and Guatemalan Paltry Tyrannulet (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Sulphur-bellied Flycatcher is recorded against all the birds logged in El Triunfo (32 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.
