Mecocerculus minor
Silhouette: Emily Willoughby · PhyloPic
In 3 days ~10% in a week ~20%
The sulphur-bellied tyrannulet (Mecocerculus minor) is a species of bird in subfamily Elaeniinae of family Tyrannidae, the tyrant flycatchers. It is found in Colombia, Ecuador, Peru, and Venezuela. The sulphur-bellied tyrannulet is monotypic.
The sulphur-bellied tyrannulet is 11 to 12 cm (4.3 to 4.7 in) long and weighs about 11 g (0.39 oz). The sexes have the same plumage. Adults have a medium gray crown. They have a thin white supercilium and a blackish stripe through the eye on an otherwise grayish white face. Their upperparts are dark olive. Their wings are dark dusky with wide buff edges on the flight feathers. Their wing coverts have wide buffy tips that show as two bars on the closed wing. Their tail is dusky olive with buffy-tinged edges on the feathers. Their upper throat is white, their lower throat and breast deep yellow with a darker olive wash, and their belly and undertail coverts unmarked bright yellow. Both sexes have a brown iris, a thin, pointed, black bill with a pale base to the mandible, and medium gray legs and feet.
The sulphur-bellied tyrannulet is found primarily on the east slope... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Podocarpus National Park | 🇪🇨 Ecuador |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Sulphur-bellied Tyrannulet sighting in Podocarpus National Park on a given day, based on 45 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 229th most-seen of the 446 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.
March
In that month about 10% of wildlife watchers report a Sulphur-bellied Tyrannulet in Podocarpus National Park on a given day, against under 5% in April to February, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Sulphur-bellied 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 Podocarpus National Park, in our data
Podocarpus National Park is the only park on Wallace's Line with enough records to rate Sulphur-bellied Tyrannulet sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Sulphur-bellied Tyrannulet is recorded against all the birds logged in Podocarpus National Park (45 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.
