Muscisaxicola rufivertex
Silhouette: Emily Willoughby · PhyloPic
In 3 days ~10% in a week ~30%
The rufous-naped ground tyrant (Muscisaxicola rufivertex) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found in Argentina, Bolivia, Chile, and Peru. As of April 2025 the rufous-naped ground tyrant's taxonomy is unsettled. The IOC assigns it these four subspecies:
As far as possible this article follows the IOC four-subspecies treatment. The rufous-naped ground tyrant is 15.5 to 18 cm (6.1 to 7.1 in) long and weighs about 19 to 22 g (0.67 to... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Lauca National Park | 🇨🇱 Chile |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | La Paz | 🇧🇴 Bolivia |
Rare
Under 5% of wildlife watchers report a Rufous-naped Ground-Tyrant sighting in La Paz on a given day, based on 12 verified sightings from GBIF citizen-science data. It is the 65th most-seen of the 88 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.
December
In that month about 20% of wildlife watchers report a Rufous-naped Ground-Tyrant in La Paz on a given day, against under 5% in January–March, May–September and November, the lowest months. That is one of La Paz's wettest months, with about 110 mm of rain against 10 mm in June.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Rufous-naped 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.
Only La Paz, in our data
La Paz is the only city on Wallace's Line with enough records to rate Rufous-naped Ground-Tyrant sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Tyrannidae
The closest relatives of the Rufous-naped Ground-Tyrant that you can see in La Paz (family Tyrannidae, Tyrant Flycatchers) are Tufted Tit-Tyrant (about 50%), d'Orbigny's Chat-Tyrant (about 20%) and White-browed Chat-Tyrant (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Rufous-naped Ground-Tyrant is recorded against all the birds logged in La Paz (12 verified sightings), 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.
