Cacicus solitarius
Silhouette: Sheatherius · PhyloPic
In 3 days ~10% in a week ~20%
The solitary cacique or solitary black cacique (Cacicus solitarius) is a species of bird in the family Icteridae. It is found in Argentina, Bolivia, Brazil, Colombia, Ecuador, Paraguay, Peru, Uruguay, and Venezuela. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical swamps, and heavily degraded former forest. It is a fairly common bird with a very extensive range so the IUCN has rated it as a "species of least concern".
The male solitary cacique has a length of about 27 cm (10.6 in) and the female 23 cm (9.1 in). It differs from all other entirely black birds with dark irises within its range, by having a large white, chisel-shaped, sharply-pointed beak. It could be confused with the Ecuadorian cacique (Cacicus sclateri), but that is smaller and has a restricted range, or the yellow-billed cacique (Amblycercus holosericeus), but that is not found east of the Andes. It has a range of different vocalizations which are mostly delivered at a measured pace but are sometimes interrupted by gurgles and growls.
The solitary cacique has a very wide distribution in Amazonia. Its range extends southwards... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | El Impenetrable National Park | 🇦🇷 Argentina | |
| 2 | Parque Estadual Encontro das Águas | 🇧🇷 Brazil | |
| 3 | Iberá National Park | 🇦🇷 Argentina | |
| 4 | Amacayacu National Natural Park | 🇨🇴 Colombia | |
| 5 | Yasuní National Park | 🇪🇨 Ecuador | |
| 6 | Manu National Park | 🇵🇪 Peru | |
| 7 | El Palmar National Park | 🇦🇷 Argentina | |
| 8 | Cuyabeno Wildlife Reserve | 🇪🇨 Ecuador | |
| 9 | Tambopata National Reserve | 🇵🇪 Peru | |
| 10 | Sierra de la Macarena National Park | 🇨🇴 Colombia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Maceió | 🇧🇷 Brazil | |
| 2 | Buenos Aires | 🇦🇷 Argentina | |
| 3 | Recife | 🇧🇷 Brazil | |
| 4 | Fortaleza | 🇧🇷 Brazil | |
| 5 | Santa Cruz de la Sierra | 🇧🇴 Bolivia | |
| 6 | Manaus | 🇧🇷 Brazil | |
| 7 | Asuncion | 🇵🇾 Paraguay |
Rare
Under 5% of wildlife watchers report a Solitary Black Cacique sighting in Tambopata National Reserve on a given day, based on 77 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 340th most-seen of the 550 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
January
In that month about 10% of wildlife watchers report a Solitary Black Cacique in Tambopata National Reserve on a given day, against under 5% in February to December, the lowest months. That is one of Tambopata National Reserve's wettest months, with about 380 mm of rain against 45 mm in July.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Solitary Black Cacique sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
9th of 10
Of the 10 parks where we can rate Solitary Black Cacique sightings, Tambopata National Reserve ranks 9th at under 5%. The best odds are in El Impenetrable National Park (Argentina, about 60%), Parque Estadual Encontro das Águas (Brazil, about 40%) and Iberá National Park (Argentina, about 40%).
GBIF citizen-science records
It is estimated from how often the Solitary Black Cacique is recorded against all the birds logged in Tambopata National Reserve (77 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.
