Chrysomus ruficapillus
Silhouette: Sheatherius · PhyloPic
In 3 days ~20% in a week ~30%
The chestnut-capped blackbird (Chrysomus ruficapillus) is a species of bird in the family Icteridae, the oropendolas, New World orioles, and New World blackbirds. It is found in Argentina, Bolivia, Brazil, Paraguay, and Uruguay.
The chestnut-capped blackbird was formally described in 1819 with the binomial Agelaius ruficapillus. In the late twentieth century it was reassigned to its present genus Chrysomus, which had been erected in 1837. It shares that genus with the yellow-hooded blackbird (C. icterocephalus).
Male chestnut-capped blackbirds average 18.5 cm (7.3 in) long and females 17.1 cm (6.7 in). Males weigh an average of 41.3 g (1.5 oz) and females average 32.2 g (1.1 oz). The species is sexually dimorphic. Adult males of the nominate subspecies have a deep dark chestnut forecrown, midcrown, throat, and upper breast. The rest of their plumages is black with a faint bluish gloss. Adult females of the nominate subspecies have a mostly olivaceous brown head with a faint buffish supercilium.... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Iberá National Park | 🇦🇷 Argentina | |
| 2 | Chapada Diamantina National Park | 🇧🇷 Brazil | |
| 3 | Serra da Canastra National Park | 🇧🇷 Brazil | |
| 4 | El Impenetrable National Park | 🇦🇷 Argentina | |
| 5 | Serra dos Órgãos National Park | 🇧🇷 Brazil | |
| 6 | Itatiaia National Park | 🇧🇷 Brazil | |
| 7 | Iguaçu National Park | 🇧🇷 Brazil | |
| 8 | Parque Estadual Encontro das Águas | 🇧🇷 Brazil | |
| 9 | Iguazú National Park | 🇦🇷 Argentina |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Rosario | 🇦🇷 Argentina | |
| 2 | Curitiba | 🇧🇷 Brazil | |
| 3 | Goiânia | 🇧🇷 Brazil | |
| 4 | Belo Horizonte | 🇧🇷 Brazil | |
| 5 | Campinas | 🇧🇷 Brazil | |
| 6 | São Paulo | 🇧🇷 Brazil | |
| 7 | Santa Cruz de la Sierra | 🇧🇴 Bolivia | |
| 8 | Asuncion | 🇵🇾 Paraguay | |
| 9 | Brasilia | 🇧🇷 Brazil | |
| 10 | Porto Alegre | 🇧🇷 Brazil |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Zoológico de Brasília | 🇧🇷 Brazil | |
| 2 | Córdoba Zoo | 🇦🇷 Argentina |
With luck
About 10% of wildlife watchers report a Chestnut-capped Blackbird sighting in São Paulo on a given day, based on 729 verified sightings from GBIF citizen-science data. It is the 86th most-seen of the 353 birds we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
April–May and October–January
In those months about 10% of wildlife watchers report a Chestnut-capped Blackbird in São Paulo on a given day, against under 5% in February–March and June–September, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Chestnut-capped Blackbird sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
6th of 15
Of the 15 cities where we can rate Chestnut-capped Blackbird sightings, São Paulo ranks 6th at about 10%. The best odds are in Rosario (Argentina, about 30%), Curitiba (Brazil, about 10%) and Goiânia (Brazil, about 10%).
GBIF citizen-science records
It is estimated from how often the Chestnut-capped Blackbird is recorded against all the birds logged in São Paulo (729 verified sightings), 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.
