Phylloscartes flavovirens
Silhouette: Emily Willoughby · PhyloPic
In 3 days <5% in a week ~10%
The Panama tyrannulet or yellow-green tyrannulet (Phylloscartes flavovirens) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is endemic to Panama. The Panama tyrannulet was originally described as Leptopogon flavovirens in 1862 and by the mid twentieth century had been transferred to genus Phylloscartes. Some early twentieth century authors considered the Panama tyrannulet and what are now the olive-green tyrannulet (P. virescens) and mottle-cheeked tyrannulet (P. ventralis) as conspecific. The three are now treated by many authors as a superspecies.
The Panama tyrannulet is monotypic. The Panama tyrannulet is 10 to 11 cm (3.9 to 4.3 in) long; one female weighed 8.8 g (0.31 oz). The sexes have the same plumage. Adults have grayish white lores and a white eye-ring. A dusky band through the eye continues around the yellowish ear coverts. Their upperparts are olive green with a slighter grayer crown. Their wings are dusky with yellowish olive green to yellower edges on the flight feathers. Their wing coverts are dusky with large pale yellow tips that form two wing bars. Their tail is grayish brown with pale olive... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Darién National Park | 🇵🇦 Panama | |
| 2 | Parque Natural Metropolitano | 🇵🇦 Panama | |
| 3 | Chagres National Park | 🇵🇦 Panama | |
| 4 | Soberanía National Park | 🇵🇦 Panama |
Rare
Under 5% of wildlife watchers report a Yellow-green Tyrannulet sighting in Chagres National Park on a given day, based on 11 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 313th most-seen of the 372 birds we can rate there. Over three days the chance rises to under 5%, and over a week to about 10%, if each day is a fresh chance.
March
In that month about 10% of wildlife watchers report a Yellow-green Tyrannulet in Chagres National Park on a given day, against under 5% in April to February, the lowest months. That is one of Chagres National Park's driest months, with about 35 mm of rain against 300 mm in July.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Yellow-green Tyrannulet sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 4 parks where we can rate Yellow-green Tyrannulet sightings, Chagres National Park ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Darién National Park (Panama, under 5%) and Parque Natural Metropolitano (Panama, under 5%).
Same family: Tyrannidae
The closest relatives of the Yellow-green Tyrannulet that you can see in Chagres National Park (family Tyrannidae, Tyrant Flycatchers) are Guatemalan Paltry Tyrannulet (about 50%), Tropical Kingbird (about 40%) and Scale-crested Pygmy-Tyrant (about 40%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Yellow-green Tyrannulet is recorded against all the birds logged in Chagres National Park (11 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.
