Myiornis albiventris
Silhouette: Emily Willoughby · PhyloPic
In 3 days ~30% in a week ~60%
The white-bellied pygmy tyrant or white-breasted pygmy-tyrant (Myiornis albiventris) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found in Bolivia, Ecuador, and Peru. The white-bellied pygmy tyrant is monotypic. However, one author has treated it as a subspecies of the eared pygmy tyrant (M. auricularis); major taxonomic systems retain it as a full species.
The white-bellied pygmy tyrant was originally described in 1894 as Orchilus albiventris. The white-bellied pygmy tyrant is about 7 cm (2.8 in) long and weighs about 5 to 6 g (0.18 to 0.21 oz). It is a very small, large-headed bird. The sexes have the same plumage. Adults have a buff whitish area surrounding the eye with a grayish crescent behind the ear coverts. Their crown is bright olive with a brown tinge and their back and rump are bright olive. Their wings are dusky with bright olive-yellow edges on the flight feathers and tips of the coverts; the latter show as two indistinct wing bars. Their tail is dusky. Their throat and upper breast are whitish with faint gray streaks and the rest of their underparts are white with a tinge of yellowish olive...
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Madidi National Park | 🇧🇴 Bolivia | |
| 2 | Amboró National Park | 🇧🇴 Bolivia |
With luck
About 10% of wildlife watchers report a White-bellied Pygmy-Tyrant sighting in Madidi National Park on a given day, based on 18 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 104th most-seen of the 239 birds we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
January
In that month about 30% of wildlife watchers report a White-bellied Pygmy-Tyrant in Madidi National Park on a given day, against about 10% in February, April–September and November, the lowest months. That is one of Madidi National Park's wettest months, with about 240 mm of rain against 40 mm in July. March and December have too few records to rate.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most White-bellied 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 White-bellied Pygmy-Tyrant sightings, Madidi National Park has the highest daily chance: about 10%. Next come Amboró National Park (Bolivia, under 5%).
Same family: Tyrannidae
The closest relatives of the White-bellied Pygmy-Tyrant that you can see in Madidi National Park (family Tyrannidae, Tyrant Flycatchers) are Great Kiskadee (about 40%), Tropical Kingbird (about 40%) and Pied Water-Tyrant (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the White-bellied Pygmy-Tyrant is recorded against all the birds logged in Madidi National Park (18 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.
