There are two disjunct populations of the Blackish Rail, one across south-central and southeast Brazil as far as Paraguay and extreme northeast Argentina, and the other in southwest Colombia, and eastern Ecuador to northern Bolivia and western Brazil. Although it is predominantly a lowland species, the Blackish Rail is also found to 2200 m in the Andes. The Blackish Rail is found in marshes, flooded rice fields and tall wet grassland, and is often a common and (given playback) easily seen resident of such places. It closely resembles the partially sympatric Plumbeous Rail (Pardirallus sanguinolentus), but differs in being smaller than the latter, with no red at the base of the bill, rather uniform upperparts, and a white chin and throat. There is virtually no information on the species’ diet, despite its undoubted abundance.