Vireo flavoviridis
Silhouette: Caleb Gordon · PhyloPic
In 3 days ~40% in a week ~70%
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 Sian Ka'an Biosphere Reserve on a given day, based on 459 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 78th most-seen of the 288 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.
May
In that month about 60% of wildlife watchers report a Yellow-green Vireo in Sian Ka'an Biosphere Reserve on a given day, against under 5% in October to March, the lowest months.
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.
5th of 47
Of the 47 parks where we can rate Yellow-green Vireo sightings, Sian Ka'an Biosphere Reserve ranks 5th at about 20%. The best odds are in Santa Rosa National Park (Costa Rica, about 30%), El Triunfo (Mexico, about 20%) and Coiba National Park (Panama, about 20%).
Same genus: Vireo
The closest relatives of the Yellow-green Vireo that you can see in Sian Ka'an Biosphere Reserve (genus Vireo, Vireos) are White-eyed Vireo (about 30%), Yucatán Vireo (about 20%) and Yellow-throated 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 Sian Ka'an Biosphere Reserve (459 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.
