Mecocerculus hellmayri
Silhouette: Emily Willoughby · PhyloPic
In 3 days ~10% in a week ~20%
The buff-banded tyrannulet (Mecocerculus hellmayri) is a species of bird in subfamily Elaeniinae of family Tyrannidae, the tyrant flycatchers. It is found in Argentina, Bolivia, and Peru. The buff-banded tyrannulet is monotypic. It and the white-tailed tyrannulet (M. poecilocercus) form a superspecies.
The buff-banded tyrannulet is about 11 cm (4.3 in) long and weighs 10 to 11 g (0.35 to 0.39 oz). The sexes have the same plumage. Adults have a medium gray crown. They have a thin white supercilium and a faint blackish stripe through the eye on an otherwise whitish face. Their upperparts are mostly greenish olive with an ochraceous olive rump and uppertail coverts. Their wings are dusky with pale buffy yellow edges on the flight feathers. Their wing coverts have pale buff tips that show as two bars on the closed wing. Their tail is dusky olive. Their throat is grayish white, their breast and sides grayish white with a darker but faint grayish wash, and their belly and undertail coverts yellowish white. Both sexes of have a brown iris, a thin and pointed black bill, and medium gray legs and feet.
The buff-banded... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Amboró National Park | 🇧🇴 Bolivia |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Buff-banded Tyrannulet sighting in Amboró National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 189th 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 10% of wildlife watchers report a Buff-banded 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 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Buff-banded 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.
Only Amboró National Park, in our data
Amboró National Park is the only park on Wallace's Line with enough records to rate Buff-banded Tyrannulet sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Tyrannidae
The closest relatives of the Buff-banded Tyrannulet that you can see in Amboró National Park (family Tyrannidae, Tyrant Flycatchers) are Black Phoebe (about 60%), Yellow-olive Flycatcher (about 40%) and Sepia-capped Flycatcher (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Buff-banded Tyrannulet is recorded against all the birds logged in Amboró National Park (10 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.
