Euscarthmus rufomarginatus
Silhouette: Emily Willoughby · PhyloPic
In 3 days ~70% in a week ~90%
The rufous-sided scrub tyrant, or rufous-sided pygmy-tyrant, (Euscarthmus rufomarginatus) is a species of bird in the family Tyrannidae. It is found in Bolivia, Brazil, Paraguay, and Suriname. Taxonomists previously called the rufous-sided scrub tyrant the "rufous-sided pygmy tyrant or pygmy-tyrant". Beginning in 2021 most systems changed the common names of all three Euscarthmus species to scrub tyrant (or scrub-tyrant) to avoid confusion with other, unrelated, species called "pygmy tyrants". However, as of late 2024 BirdLife International's Handbook of the Birds of the World retains the "pygmy-tyrant" common name for it.
The rufous-sided scrub tyrant is monotypic. The rufous-sided scrub tyrant is 9.0 to 11.5 cm (3.5 to 4.5 in) long and weighs about 6 g (0.21 oz). The sexes have the same plumage. Adults have a brown crown with a small cinnamon-rufous central patch that is somewhat hidden. They have a whitish supercilium and eye-ring on an otherwise light brown face. Their upperparts are brown. Their wings are a darker brown than the upperparts with ocraceous tips on the coverts that show as two wing bars; the inner flight feathers have... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Emas National Park | 🇧🇷 Brazil | |
| 2 | Chapada Diamantina National Park | 🇧🇷 Brazil |
Possible
About 30% of wildlife watchers report a Rufous-sided Pygmy-Tyrant sighting in Emas National Park on a given day, based on 78 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 63rd most-seen of the 187 birds we can rate there. Over three days the chance rises to about 70%, and over a week to about 90%, if each day is a fresh chance.
May and October–November
In those months about 40% of wildlife watchers report a Rufous-sided Pygmy-Tyrant in Emas National Park on a given day, against about 10% in July, the lowest month. April and December–February have too few records to rate.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Rufous-sided Pygmy-Tyrant sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Rufous-sided Pygmy-Tyrant sightings, Emas National Park has the highest daily chance: about 30%. Next come Chapada Diamantina National Park (Brazil, about 20%).
Same family: Tyrannidae
The closest relatives of the Rufous-sided Pygmy-Tyrant that you can see in Emas National Park (family Tyrannidae, Tyrant Flycatchers) are White-rumped Monjita (about 70%), Great Kiskadee (about 60%) and Grey Monjita (about 50%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Rufous-sided Pygmy-Tyrant is recorded against all the birds logged in Emas National Park (78 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.
