Muscisaxicola albilora
Silhouette: Emily Willoughby · PhyloPic
In 3 days ~10% in a week ~30%
The white-browed ground tyrant (Muscisaxicola albilora) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found in Argentina, Bolivia, Chile, Ecuador, and Peru, and as a vagrant to Colombia, Uruguay, and the Falkland Islands.
The white-browed ground tyrant is monotypic. However, the authors of an early twentieth century publication suggested possibly treating M. juninensis (then the Junin ground-tyrant, now the puna ground tyrant) as a subspecies of it.
The white-browed ground tyrant is 15 to 17.5 cm (5.9 to 6.9 in) long and weighs about 25 to 29 g (0.88 to 1.0 oz). The sexes have the same plumage. Adults have a tawny forecrown, a rufous hindcrown, and a long thin white supercilium. Their upperparts are brownish gray. Their wings are dusky gray. Their tail is black with whitish edges on the outer webs of the outermost feathers. Their throat, breast, and belly are pale gray and their crissum whitish. They have a dark brown iris, a long dusky bill, and dusky legs and feet. Juveniles have a brown crown, dull rufous edges on the wing coverts, and light streaking on the breast and belly. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Torres del Paine National Park | 🇨🇱 Chile | |
| 2 | Nahuel Huapi National Park | 🇦🇷 Argentina |
Rare
Under 5% of wildlife watchers report a White-browed Ground-Tyrant sighting in Torres del Paine National Park on a given day, based on 76 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 70th most-seen of the 106 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
October and December–January
In those months about 10% of wildlife watchers report a White-browed Ground-Tyrant in Torres del Paine National Park on a given day, against under 5% in February–September and November, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most White-browed Ground-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-browed Ground-Tyrant sightings, Torres del Paine National Park has the highest daily chance: under 5%. Next come Nahuel Huapi National Park (Argentina, under 5%).
Same genus: Muscisaxicola
The closest relatives of the White-browed Ground-Tyrant that you can see in Torres del Paine National Park (genus Muscisaxicola, Ground-Tyrants) are Dark-faced Ground-Tyrant (about 20%) and Cinnamon-bellied Ground-Tyrant (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the White-browed Ground-Tyrant is recorded against all the birds logged in Torres del Paine National Park (76 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.
