Agriornis murinus
Silhouette: Emily Willoughby · PhyloPic
In 3 days ~10%
The lesser shrike-tyrant (Agriornis murinus) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found in Argentina, Bolivia and Paraguay and as a vagrant to Brazil, Chile, and Uruguay. The lesser shrike-tyrant was formally described in 1837 as Pepoazae murina. For much of the twentieth century it was placed in genus Xolmis but by the 1980s most authors had transferred to genus Agriornis that was erected in 1839.
The lesser shrike-tyrant is monotypic. The lesser shrike-tyrant is 16 to 18.5 cm (6.3 to 7.3 in) long. Adult males have a gray-brown crown, mottled blackish and white lores, and a whitish or buffy supercilium and eye-ring. Their upperparts are gray-brown. Their wings are mostly dusky with whitish tips on the coverts and whitish edges on the inner flight feathers. Their tail is mostly dusky with pale grayish to white outer webs on the outermost pair pair of feathers. Their throat is white with thin black streaks, their breast very pale grayish brown, their flanks pale grayish brown with a buff tinge, and their belly creamy whitish. Adult females have almost the same plumage but the streaks on their throat... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Península Valdés | 🇦🇷 Argentina | |
| 2 | El Impenetrable National Park | 🇦🇷 Argentina |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cordoba | 🇦🇷 Argentina |
Rare
Under 5% of wildlife watchers report a Lesser Shrike-Tyrant sighting in El Impenetrable National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 215th most-seen of the 219 birds we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
July
In that month about 10% of wildlife watchers report a Lesser Shrike-Tyrant in El Impenetrable National Park on a given day, against under 5% in January–June and August–November, the lowest months. That is one of El Impenetrable National Park's driest months, with about 25 mm of rain against 120 mm in March. December has too few records to rate.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most Lesser Shrike-Tyrant sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 2
Of the 2 parks where we can rate Lesser Shrike-Tyrant sightings, El Impenetrable National Park ranks 2nd at under 5%. The best odds are in Península Valdés (Argentina, about 10%).
Same family: Tyrannidae
The closest relatives of the Lesser Shrike-Tyrant that you can see in El Impenetrable National Park (family Tyrannidae, Tyrant Flycatchers) are Pearly-vented Tody-Tyrant (about 70%), Great Kiskadee (about 70%) and Cattle Tyrant (about 40%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Lesser Shrike-Tyrant is recorded against all the birds logged in El Impenetrable National Park (6 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.
