Pseudoleistes virescens
Silhouette: Sheatherius · PhyloPic
In 3 days ~70% in a week ~90%
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 |
Possible
About 30% of wildlife watchers report a Brown-and-yellow Marshbird sighting in Iberá National Park on a given day, based on 596 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 66th most-seen of the 284 birds we can rate there. Over three days the chance rises to about 70%, and over a week to about 90%, if each day is a fresh chance.
October
In that month about 50% of wildlife watchers report a Brown-and-yellow Marshbird in Iberá National Park on a given day, against about 10% in February, the lowest month.
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.
Yes
Of the 2 parks where we can rate Brown-and-yellow Marshbird sightings, Iberá National Park has the highest daily chance: about 30%. Next come El Palmar National Park (Argentina, about 10%).
GBIF citizen-science records
It is estimated from how often the Brown-and-yellow Marshbird is recorded against all the birds logged in Iberá National Park (596 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.
