Agelaius assimilis
Silhouette: Andy Wilson · PhyloPic
In 3 days ~50% in a week ~80%
The red-shouldered blackbird (Agelaius assimilis), known in Cuban Spanish as mayito de la ciénaga (swamp mayito) or sargento cubano (Cuban sergeant) and turpial de hombros rojos (red-shouldered troupial), is a species of passerine bird in the family Icteridae endemic to Cuba. It is similar to other species in the genus Agelaius, but recent research has established it as a separate species from the closely related red-winged blackbird (Agelaius phoeniceus).
The males are very similar to those of the red-winged blackbird (Agelaius phoeniceus), while the females are completely black, similar to the males but without the red and yellow stripes on the wings. In addition to having a different behavior, the sexual dimorphism in size and color of the plumage of the red-shouldered blackbird is less than that of the red-winged blackbird.
It is found only in the wetlands of the island of Cuba. Although its reduced range covers only 4,100 square kilometres (1,600 sq mi), it has been classified as species of least concern. In the absence of evidence of population decline or significant threats, their numbers are believed to be stable.
Red-shouldered blackbirds were... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Ciénaga de Zapata | 🇨🇺 Cuba |
More parks will be added in future updates.
Possible
About 20% of wildlife watchers report a Red-shouldered Blackbird sighting in Ciénaga de Zapata on a given day, based on 359 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 74th most-seen of the 177 birds we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
March and October
In those months about 40% of wildlife watchers report a Red-shouldered Blackbird in Ciénaga de Zapata on a given day, against about 10% in February and June, the lowest months. September has too few records to rate.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Red-shouldered Blackbird sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Ciénaga de Zapata, in our data
Ciénaga de Zapata is the only park on Wallace's Line with enough records to rate Red-shouldered Blackbird sightings: about 20% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Red-shouldered Blackbird is recorded against all the birds logged in Ciénaga de Zapata (359 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.
