Vireolanius leucotis
Silhouette: Sheatherius · PhyloPic
In 3 days <5% in a week ~10%
The slaty-capped shrike-vireo (Vireolanius leucotis) is a species of bird in the family Vireonidae, the vireos, greenlets, and shrike-babblers. It is found in every mainland South American country except Argentina, Chile, Paraguay, and Uruguay.
The slaty-capped shrike-vireo was originally described in 1838 as Malaconotus leucotis. It was eventually placed in genus Vireolanius but for a time in the early twentieth century it was placed in genus Smaragdolanius and its own family, Vireolaniidae. By the 1970s Smaragdolanius had been merged into Vireolanius and included in the family Vireonidae.
The slaty-capped shrike-vireo's further taxonomy is unsettled. The IOC, the Clements taxonomy, and AviList assign it these four subspecies: Clements recognizes that it is distinctive within the larger species by calling it the "slaty-capped shrike-vireo (pale-legged)... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Farallones de Cali National Natural Park | 🇨🇴 Colombia | |
| 2 | Amboró National Park | 🇧🇴 Bolivia | |
| 3 | Manu National Park | 🇵🇪 Peru | |
| 4 | Amacayacu National Natural Park | 🇨🇴 Colombia | |
| 5 | Tambopata National Reserve | 🇵🇪 Peru |
Rare
Under 5% of wildlife watchers report a Slaty-capped Shrike-Vireo sighting in Amacayacu National Natural Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 401st most-seen of the 436 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.
September
In that month about 10% of wildlife watchers report a Slaty-capped Shrike-Vireo in Amacayacu National Natural Park on a given day, against under 5% in October to August, the lowest months. That is one of Amacayacu National Natural Park's driest months, with about 160 mm of rain against 390 mm in March.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Slaty-capped Shrike-Vireo sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
4th of 5
Of the 5 parks where we can rate Slaty-capped Shrike-Vireo sightings, Amacayacu National Natural Park ranks 4th at under 5%. The best odds are in Farallones de Cali National Natural Park (Colombia, about 20%), Amboró National Park (Bolivia, under 5%) and Manu National Park (Peru, under 5%).
GBIF citizen-science records
It is estimated from how often the Slaty-capped Shrike-Vireo is recorded against all the birds logged in Amacayacu National Natural 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.
