It is a medium to large-sized coot with a robust body and compact silhouette, showing mostly dark gray to blackish plumage. It features a well-developed yellow frontal shield, which displays a distinct red spot at its center, directly contacting the base of the bill, a key characteristic that clearly distinguishes it from other coot species. The bill is relatively short and thick, usually yellowish, and the legs show reddish bands, especially noticeable when swimming or walking.
Geographic distribution: It occurs mainly in central and southern South America, including southern Brazil, Uruguay, Paraguay, Bolivia, Chile, and much of Argentina. Its presence is closely associated with suitable freshwater wetlands, from lowlands to higher elevations.
Habitat: It inhabits lakes, lagoons, marshes, wetlands, and reservoirs, preferably those with abundant emergent aquatic vegetation. It tolerates human-modified environments such as dams and peri-urban areas, provided adequate vegetation and calm conditions remain.
Feeding: The diet is primarily herbivorous, consisting of aquatic plants, shoots, stems, and seeds, with occasional consumption of small invertebrates. It feeds by swimming and shallow diving to pull vegetation from below the surface.
Behavior: This is a gregarious and territorial species, commonly seen in pairs or flocks, especially outside the breeding season. During nesting, it actively defends its territory and may display aggressive behavior. It swims efficiently and usually takes flight after a short running start across the water.
Nesting: It builds a large floating or well-anchored nest, made of aquatic plant material. The typical clutch consists of 5 to 8 eggs, incubated by both adults, which also share chick care and defense.
Conservation status: It is classified as Least Concern, with generally stable populations. Nevertheless, wetland degradation and water pollution pose localized threats.
Author of this compilation: EcoRegistros – 22/12/2025