Pseudoleistes virescens
Silhouette: Sheatherius · PhyloPic
In 3 days ~30% in a week ~60%
The brown-and-yellow marshbird (Pseudoleistes virescens) is a species of bird in the family Icteridae, the oropendolas, New World orioles, and New World blackbirds. It is found in Argentina, Brazil, Uruguay, and as a vagrant in Paraguay.
The brown-and-yellow marshbird was formally described in 1819 with the binomial Agelaius virescens. It now shares the genus Pseudoleistes with the yellow-rumped marshbird (P. guirahuro). The brown-and-yellow marshbird is monotypic.
The brown-and-yellow marshbird averages 24 cm (9.4 in) long. Males weigh an average of 79.6 g (2.8 oz) and females average 72.9 g (2.6 oz). The sexes have the same plumage. Adults are mostly deep brown to olive brown. Their upperwing coverts and the bend of the wing are rich yellow that usually only shows in flight. Their lower breast and belly are rich yellow. Both sexes have a brown iris, a blackish bill, and blackish legs and feet. Juveniles are similar to adults but with a yellowish throat, a yellow and brownish striped breast, and a yellowish mandible.
The brown-and-yellow marshbird is found in far southern Brazil's Santa Catarina and Rio... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Iberá National Park | 🇦🇷 Argentina | |
| 2 | El Palmar National Park | 🇦🇷 Argentina |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Montevideo | 🇺🇾 Uruguay | |
| 2 | Buenos Aires | 🇦🇷 Argentina |
With luck
About 10% of wildlife watchers report a Brown-and-yellow Marshbird sighting in El Palmar National Park on a given day, based on 47 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 86th most-seen of the 151 birds we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
September
In that month about 30% of wildlife watchers report a Brown-and-yellow Marshbird in El Palmar National Park on a given day, against about 10% in June–July and October–April, the lowest months.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most Brown-and-yellow Marshbird sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 2
Of the 2 parks where we can rate Brown-and-yellow Marshbird sightings, El Palmar National Park ranks 2nd at about 10%. The best odds are in Iberá National Park (Argentina, about 30%).
Same family: Icteridae
The closest relatives of the Brown-and-yellow Marshbird that you can see in El Palmar National Park (family Icteridae, New World Blackbirds and Orioles) are Grayish Baywing (about 50%), Epaulet Oriole (about 50%) and Shiny Cowbird (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Brown-and-yellow Marshbird is recorded against all the birds logged in El Palmar National Park (47 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.
