Mimus saturninus
Silhouette: Andy Wilson · PhyloPic
In 3 days ~90% 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 60% of wildlife watchers report a Chalk-browed Mockingbird sighting in Chapada dos Guimarães National Park on a given day, based on 468 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 9th most-seen of the 273 birds we can rate there. Over three days the chance rises to about 90%, and over a week to over 90%, if each day is a fresh chance.
June and July
In those months about 70% of wildlife watchers report a Chalk-browed Mockingbird in Chapada dos Guimarães National Park on a given day, against about 40% in January and November, the lowest months. Those are among Chapada dos Guimarães National Park's driest months, with about 5 mm of rain a month against 240 mm in March. February to April have too few records to rate.
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.
3rd of 14
Of the 14 parks where we can rate Chalk-browed Mockingbird sightings, Chapada dos Guimarães National Park ranks 3rd at about 60%. The best odds are in Emas National Park (Brazil, about 70%) and Serra da Canastra National Park (Brazil, about 60%). All parks ranked.
Same order: Passeriformes
The closest relatives of the Chalk-browed Mockingbird that you can see in Chapada dos Guimarães National Park (order Passeriformes, Perching Birds) are Chopí Blackbird (about 70%), Great Kiskadee (about 70%) and Rufous Hornero (about 70%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Chalk-browed Mockingbird is recorded against all the birds logged in Chapada dos Guimarães National Park (468 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.
