Hemitriccus obsoletus
Silhouette: Emily Willoughby · PhyloPic
In 3 days ~20% in a week ~40%
The brown-breasted bamboo tyrant or brown-breasted pygmy-tyrant (Hemitriccus obsoletus) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found in Argentina and Brazil. There is some evidence that zimmeri deserves full species status.
Some early to mid-twentieth century authors considered the brown-breasted bamboo tyrant to be a subspecies of the drab-breasted bamboo tyrant (H. diops) but since at least 1966 most systems have recognized them as separate species. They and the flammulated bamboo tyrant (H. flammulatus) form a superspecies.
The brown-breasted bamboo tyrant is about 11 cm (4.3 in) long and weighs 9 to 11 g (0.32 to 0.39 oz). The sexes have the same plumage. Adults of the nominate subspecies have a plain brownish olive crown. They have a buffy spot above the lores and a pale buffy eye-ring on an otherwise brownish face. Their back and rump are plain brownish olive. Their wings are plain brownish olive and their tail is dusky. Their throat and breast are dingy... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Itatiaia National Park | 🇧🇷 Brazil |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Brown-breasted Pygmy-Tyrant sighting in Itatiaia National Park on a given day, based on 115 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 178th most-seen of the 352 birds we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
March, June, August and October–January
In those months about 10% of wildlife watchers report a Brown-breasted Pygmy-Tyrant in Itatiaia National Park on a given day, against under 5% in February, April–May, July and September, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Brown-breasted Pygmy-Tyrant sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Itatiaia National Park, in our data
Itatiaia National Park is the only park on Wallace's Line with enough records to rate Brown-breasted Pygmy-Tyrant sightings: about 10% of wildlife watchers there report one on a given day.
Same genus: Hemitriccus
The closest relatives of the Brown-breasted Pygmy-Tyrant that you can see in Itatiaia National Park (genus Hemitriccus, Tody-Tyrants and Bamboo-Tyrants) are Fork-tailed Pygmy-Tyrant (about 10%) and Drab-breasted Pygmy-Tyrant (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Brown-breasted Pygmy-Tyrant is recorded against all the birds logged in Itatiaia National Park (115 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.
