Capsiempis flaveola
Silhouette: Emily Willoughby · PhyloPic
In 3 days ~40% in a week ~60%
The yellow tyrannulet (Capsiempis flaveola) is a small passerine bird in subfamily Elaeniinae of family Tyrannidae, the tyrant flycatchers. It is found in Costa Rica, Nicaragua, Panama, and in every mainland South American country except Chile and Uruguay.
The yellow tyrannulet was originally described in 1823 as Muscicapa flaveola and in 1859 moved to the newly created genus Capsiempis. In the 1970s that genus was merged into Phylloscartes but by 1990 it had been resurrected. The yellow tyrannulet is the only member of genus Capsiempis.
The yellow tyrannulet has these five subspecies: The sexes have the same plumage. Adults of the nominate subspecies C. f. flaveola have a dark yellowish olive crown with a somewhat bushy crest. They have a bright yellow supercilium, a bright yellow partial eye ring, and a dark line through the eye on an otherwise yellowish face. Their upperparts... Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Maceió | 🇧🇷 Brazil | |
| 2 | Niterói | 🇧🇷 Brazil | |
| 3 | Panama City | 🇵🇦 Panama |
With luck
About 10% of wildlife watchers report a Yellow Tyrannulet sighting in San Lorenzo Protected Forest on a given day, based on 27 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 115th most-seen of the 249 birds we can rate there. Over three days the chance rises to about 40%, and over a week to about 60%, if each day is a fresh chance.
November
In that month about 30% of wildlife watchers report a Yellow Tyrannulet in San Lorenzo Protected Forest on a given day, against about 10% in January–February and April–October, the lowest months. That is one of San Lorenzo Protected Forest's wettest months, with about 380 mm of rain against 65 mm in February.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Yellow Tyrannulet 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 29
Of the 29 parks where we can rate Yellow Tyrannulet sightings, San Lorenzo Protected Forest ranks 3rd at about 10%. The best odds are in Iguazú National Park (Argentina, about 20%) and Iguaçu National Park (Brazil, about 20%).
Same family: Tyrannidae
The closest relatives of the Yellow Tyrannulet that you can see in San Lorenzo Protected Forest (family Tyrannidae, Tyrant Flycatchers) are Tropical Kingbird (about 50%), Great Kiskadee (about 50%) and Common Tody-Flycatcher (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Yellow Tyrannulet is recorded against all the birds logged in San Lorenzo Protected Forest (27 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.
