Sirystes sibilator
Silhouette: Emily Willoughby · PhyloPic
In 3 days ~30% in a week ~50%
The sibilant sirystes (Sirystes sibilator) is a species of bird in the family Tyrannidae, the tyrant flycatchers. It is found in Argentina, Bolivia, Brazil, and Paraguay. The sibilant sirystes was originally described as Muscicapa sibilator, mistakenly placing it with the Old World flycatchers. In 1860 the genus Sirystes was erected for it. Some authors included the genus in family Cotingidae but by the 1930s it was placed in its current family. The sibilant sirystes was eventually expanded by what are now the white-rumped sirystes (S. albocinereus) and Todd's sirystes (S. subcanescens); some systems also included what is now the Choco sirystes (S. albogriseus). The combined species was simply called "sirystes". As a result of a study published in 2013, "sirystes" was split into four species.
The sibilant sirystes is 18 to 18.5 cm (7.1 to 7.3 in) long and weighs about 26 to 28 g (0.92 to 0.99 oz). The sexes have the same plumage. Adults of the nominate subspecies have a black crown with a slight crest. The rest... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Iguazú National Park | 🇦🇷 Argentina | |
| 2 | Iguaçu National Park | 🇧🇷 Brazil | |
| 3 | Itatiaia National Park | 🇧🇷 Brazil | |
| 4 | Darién National Park | 🇵🇦 Panama | |
| 5 | Chapada dos Guimarães National Park | 🇧🇷 Brazil | |
| 6 | Serra da Canastra National Park | 🇧🇷 Brazil | |
| 7 | Chapada Diamantina National Park | 🇧🇷 Brazil | |
| 8 | Soberanía National Park | 🇵🇦 Panama |
With luck
About 10% of wildlife watchers report a Sibilant Sirystes sighting in Chapada dos Guimarães National Park on a given day, based on 79 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 105th most-seen of the 273 birds we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
June
In that month about 30% of wildlife watchers report a Sibilant Sirystes in Chapada dos Guimarães National Park on a given day, against under 5% in September, the lowest month. That is one of Chapada dos Guimarães National Park's driest months, with about 10 mm of rain against 240 mm in March. February to April have too few records to rate.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Sibilant Sirystes sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
5th of 8
Of the 8 parks where we can rate Sibilant Sirystes sightings, Chapada dos Guimarães National Park ranks 5th at about 10%. The best odds are in Iguazú National Park (Argentina, about 20%), Iguaçu National Park (Brazil, about 20%) and Itatiaia National Park (Brazil, about 20%).
Same family: Tyrannidae
The closest relatives of the Sibilant Sirystes that you can see in Chapada dos Guimarães National Park (family Tyrannidae, Tyrant Flycatchers) are Great Kiskadee (about 70%), Boat-billed Flycatcher (about 40%) and Rusty-margined Flycatcher (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Sibilant Sirystes is recorded against all the birds logged in Chapada dos Guimarães National Park (79 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.
