Agriornis montanus
Silhouette: Emily Willoughby · PhyloPic
In 3 days <5% in a week ~10%
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 |
Rare
Under 5% of wildlife watchers report a Black-billed Shrike-Tyrant sighting in Torres del Paine National Park on a given day, based on 41 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 90th most-seen of the 106 birds we can rate there. Over three days the chance rises to under 5%, and over a week to about 10%, if each day is a fresh chance.
March and July
In those months about 10% of wildlife watchers report a Black-billed Shrike-Tyrant in Torres del Paine National Park on a given day, against under 5% in April–June and August–February, the lowest months.
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.
3rd of 3
Of the 3 parks where we can rate Black-billed Shrike-Tyrant sightings, Torres del Paine National Park ranks 3rd at under 5%. The best odds are in Lauca National Park (Chile, about 30%) and Nahuel Huapi National Park (Argentina, 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 Torres del Paine National Park (41 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.
