Mimus saturninus
Silhouette: Andy Wilson · PhyloPic
In 3 days ~80% in a week >90%
The chalk-browed mockingbird (Mimus saturninus) is a bird in the family Mimidae. It is found in Brazil, Bolivia, Argentina, Paraguay, Suriname, and Uruguay. The chalk-browed mockingbird is 23.5 to 26 cm (9.3 to 10.2 in) long and weighs 55 to 73 g (1.9 to 2.6 oz). Males are slightly larger than females. Adults of the nominate subspecies have a dark brown crown, a broad white supercilium, a blackish line through the eye, and white cheeks. Their upperparts are brownish with some darker streaks; the rump is buffier. Their wings are blackish and show two obscure bars when folded. The tail is also blackish; most feathers have white tips and the outermost have white edges. The underside of their body is white from the throat to the vent, though the breast has a gray tinge and the flanks are buffy with faint dark streaks. The juvenile is browner than the adult and has buffier underparts with dark streaks on the breast.
M. s. frater is browner than the nominate, including the rump that is not buffy like... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Emas National Park | 🇧🇷 Brazil | |
| 2 | Serra da Canastra National Park | 🇧🇷 Brazil | |
| 3 | Chapada dos Guimarães National Park | 🇧🇷 Brazil | |
| 4 | Iberá National Park | 🇦🇷 Argentina | |
| 5 | Iguaçu National Park | 🇧🇷 Brazil | |
| 6 | Iguazú National Park | 🇦🇷 Argentina | |
| 7 | El Palmar National Park | 🇦🇷 Argentina | |
| 8 | Chapada Diamantina National Park | 🇧🇷 Brazil | |
| 9 | Península Valdés | 🇦🇷 Argentina | |
| 10 | Serra dos Órgãos National Park | 🇧🇷 Brazil | |
| 11 | Itatiaia National Park | 🇧🇷 Brazil | |
| 12 | Tijuca National Park | 🇧🇷 Brazil | |
| 13 | El Impenetrable National Park | 🇦🇷 Argentina | |
| 14 | Parque Estadual Encontro das Águas | 🇧🇷 Brazil |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Rosario | 🇦🇷 Argentina | |
| 2 | Buenos Aires | 🇦🇷 Argentina | |
| 3 | Brasilia | 🇧🇷 Brazil | |
| 4 | Cordoba | 🇦🇷 Argentina | |
| 5 | Campinas | 🇧🇷 Brazil | |
| 6 | Salvador | 🇧🇷 Brazil | |
| 7 | Montevideo | 🇺🇾 Uruguay | |
| 8 | São Paulo | 🇧🇷 Brazil | |
| 9 | Belo Horizonte | 🇧🇷 Brazil | |
| 10 | Vitória | 🇧🇷 Brazil |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Parque das Aves | 🇧🇷 Brazil |
Likely
About 40% of wildlife watchers report a Chalk-browed Mockingbird sighting in Iberá National Park on a given day, based on 696 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 42nd most-seen of the 284 birds we can rate there. Over three days the chance rises to about 80%, and over a week to over 90%, if each day is a fresh chance.
April–May, September and November
In those months about 50% of wildlife watchers report a Chalk-browed Mockingbird in Iberá National Park on a given day, against about 30% in February and March, the lowest months.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most Chalk-browed Mockingbird sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
4th of 14
Of the 14 parks where we can rate Chalk-browed Mockingbird sightings, Iberá National Park ranks 4th at about 40%. The best odds are in Emas National Park (Brazil, about 70%), Serra da Canastra National Park (Brazil, about 60%) and Chapada dos Guimarães National Park (Brazil, about 60%). All parks ranked.
GBIF citizen-science records
It is estimated from how often the Chalk-browed Mockingbird is recorded against all the birds logged in Iberá National Park (696 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.
