Agriornis montanus
Silhouette: Emily Willoughby · PhyloPic
In 3 days ~70% in a week ~90%
The black-billed shrike-tyrant (Agriornis montanus) is a bird species in the Tyrannidae family, the tyrant flycatchers. It is found in Argentina, Bolivia, Chile, Colombia, Ecuador, and Peru, and possibly has occurred as a vagrant to the Falkland Islands.
The black-billed shrike-tyrant was formally described in 1837 as Pepoazae montana. It was later transferred to the genus Agriornis that was erected in 1839. The black-billed shrike-tyrant's taxonomy is unsettled. The IOC recognizes these six subspecies:
This article follows the six-subspecies model. The black-billed shrike-tyrant is 22 to 24 cm (8.7 to 9.4 in) long. The sexes have the same plumage. Adults of the nominate subspecies A. m. montanus have a whitish stripe above the lores, a buffish white... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Lauca National Park | 🇨🇱 Chile | |
| 2 | Nahuel Huapi National Park | 🇦🇷 Argentina | |
| 3 | Torres del Paine National Park | 🇨🇱 Chile |
Possible
About 30% of wildlife watchers report a Black-billed Shrike-Tyrant sighting in Lauca National Park on a given day, based on 288 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 38th most-seen of the 112 birds we can rate there. Over three days the chance rises to about 70%, and over a week to about 90%, if each day is a fresh chance.
August and October
In those months about 50% of wildlife watchers report a Black-billed Shrike-Tyrant in Lauca National Park on a given day, against about 20% in February and April, the lowest months. Those are among Lauca National Park's driest months, with about 10 mm of rain a month against 150 mm in January.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Black-billed Shrike-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 3 parks where we can rate Black-billed Shrike-Tyrant sightings, Lauca National Park has the highest daily chance: about 30%. Next come Nahuel Huapi National Park (Argentina, under 5%) and Torres del Paine National Park (Chile, under 5%).
GBIF citizen-science records
It is estimated from how often the Black-billed Shrike-Tyrant is recorded against all the birds logged in Lauca National Park (288 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.
