Vireo flavoviridis
Silhouette: Caleb Gordon · PhyloPic
In 3 days ~50% in a week ~80%
The yellow-green vireo (Vireo flavoviridis) is a small American passerine bird. It is migratory breeding from Mexico to Panama and wintering in the northern and eastern Andes and the western Amazon Basin. The yellow-green vireo was formally described by the American ornithologist John Cassin in 1851 under the binomial name Vireosylvia flavoviridis. The specific epithet combines the Latin flavus meaning "yellow" and viridis meaning "green". The type locality is San Juan de Nicaragua. The yellow-green vireo is now placed in the genus Vireo that was introduced in 1808 by the French ornithologist Louis Pierre Vieillot.
Four subspecies are recognised: The adult yellow-green vireo is 14–14.7 cm (5.5–5.8 in) in length and weighs 18.5 g (0.65 oz). It has olive-green upperparts and a dusky-edged gray crown. There is a dark line from the bill to the red-brown... Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | San José | 🇨🇷 Costa Rica | |
| 2 | San Salvador | 🇸🇻 El Salvador | |
| 3 | Panama City | 🇵🇦 Panama | |
| 4 | Bogota | 🇨🇴 Colombia | |
| 5 | Managua | 🇳🇮 Nicaragua | |
| 6 | Guatemala City | 🇬🇹 Guatemala | |
| 7 | Monterrey | 🇲🇽 México | |
| 8 | Medellín | 🇨🇴 Colombia | |
| 9 | San Diego | 🇺🇸 United States | |
| 10 | Los Angeles | 🇺🇸 United States |
Possible
About 20% of wildlife watchers report a Yellow-green Vireo sighting in El Triunfo on a given day, based on 43 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 81st most-seen of the 221 birds we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
April and May
In those months about 50% of wildlife watchers report a Yellow-green Vireo in El Triunfo on a given day, against about 10% in March, July–September and November–January, the lowest months. June has too few records to rate.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Yellow-green Vireo 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 47
Of the 47 parks where we can rate Yellow-green Vireo sightings, El Triunfo ranks 2nd at about 20%. The best odds are in Santa Rosa National Park (Costa Rica, about 30%).
Same genus: Vireo
The closest relatives of the Yellow-green Vireo that you can see in El Triunfo (genus Vireo, Vireos) are Warbling Vireo (about 30%), Blue-headed Vireo (about 20%) and Brown-capped Vireo (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Yellow-green Vireo is recorded against all the birds logged in El Triunfo (43 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.
