Rallus ypecaha Vieillot, 1819, Paraguay. Monotypic.
OTHER COMMON NAMES
French: Rвle ypйcaha; German: Ypecaharalle; Spanish: Cotara Ipacaб.
16–19.3 in (41–49 cm); 1.2–1.9 lb (565–860 g). Olive-brown and vinous-chestnut, with gray face and foreneck, and black rear body. Juvenile paler and duller.
Eastern and southeastern Brazil, Bolivia, Paraguay, Uruguay, and northeastern Argentina.
Marshes, swamps, fields, and gallery forest.
Often bold and inquisitive. Stance upright, gait elegant. Solitary, but congregates in the evening for a communal display, rushing around with a powerful chorus of screams, shrieks, and wheezes.
FEEDING ECOLOGY AND DIET
Arthropods, mollusks, seeds, and fruit; forages in early morning and evening.
Monogamous. Breeds September through February (Uruguay). Nest of grass and stems, on ground or in trees, usually near water. Eggs: four to seven. In captivity, incubation 24 days; young independent at eight to nine weeks.
Not threatened. Formerly locally common to abundant, it may have suffered less from habitat destruction than its forestdwelling congeners.
SIGNIFICANCE TO HUMANS
Often kept in captivity. Hunted in Argentina.
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