Phylloscartes ventralis
Silhouette: Emily Willoughby · PhyloPic
In 3 days ~10% in a week ~20%
The mottle-cheeked tyrannulet (Phylloscartes ventralis) is a generally common, small species of bird in the family Tyrannidae, the tyrant flycatchers. It is found in Argentina, Bolivia, Brazil, Paraguay, Peru, and Uruguay.
Some early twentieth century authors considered the mottle-cheeked tyrannulet and what are now the Panama tyrannulet (P. flavovirens) and olive-green tyrannulet (P. virescens) as conspecific. The three are now treated by many authors as a superspecies.
Some authors believe that the "recognition of subspecies may be unwarranted". The mottle-cheeked tyrannulet is about 12 cm (4.7 in) long and weighs about 9 g (0.32 oz). The sexes have the same plumage, and the subspecies also have essentially the same plumage as well. Adults have a short thin whitish supercilium, an indistinct broken whitish eye-ring, a dusky line through the eye, a wide whitish and dusky crescent below the eye, a dusky "moustache", and the eponymous whitish and... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Itatiaia National Park | 🇧🇷 Brazil | |
| 2 | Serra dos Órgãos National Park | 🇧🇷 Brazil | |
| 3 | El Palmar National Park | 🇦🇷 Argentina | |
| 4 | Amboró National Park | 🇧🇴 Bolivia | |
| 5 | Iguazú National Park | 🇦🇷 Argentina | |
| 6 | Iguaçu National Park | 🇧🇷 Brazil |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Buenos Aires | 🇦🇷 Argentina | |
| 2 | Curitiba | 🇧🇷 Brazil | |
| 3 | Montevideo | 🇺🇾 Uruguay | |
| 4 | Porto Alegre | 🇧🇷 Brazil | |
| 5 | São Paulo | 🇧🇷 Brazil |
Rare
Under 5% of wildlife watchers report a Mottle-cheeked Tyrannulet sighting in Amboró National Park on a given day, based on 15 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 151st most-seen of the 273 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
July
In that month about 20% of wildlife watchers report a Mottle-cheeked Tyrannulet in Amboró National Park on a given day, against under 5% in August to May, the lowest months. That is one of Amboró National Park's driest months, with about 120 mm of rain against 340 mm in January. June has too few records to rate.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Mottle-cheeked 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.
4th of 6
Of the 6 parks where we can rate Mottle-cheeked Tyrannulet sightings, Amboró National Park ranks 4th at under 5%. The best odds are in Itatiaia National Park (Brazil, about 20%), Serra dos Órgãos National Park (Brazil, about 10%) and El Palmar National Park (Argentina, about 10%).
GBIF citizen-science records
It is estimated from how often the Mottle-cheeked Tyrannulet is recorded against all the birds logged in Amboró National Park (15 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.
