The Giant Wood-rail is a large, terrestrial rail of south Brazil and Uruguay, eastern Paraguay, and northeast Argentina. While most Aramides are shy and inhabit thick vegetation, the Giant Wood-rail lives along marshes and rivers, and can often be seen completely out in the open, walking slowly along the mud. This behavior generally comes as a great and welcome surprise to neotropical ornithologists familiar with the effort involved in aquiring even partial views of wood-rails elsewhere. The plumage of the Giant Wood-rail is a composition of earth-tones, with a rich olive back fading to umbre-rust towards an abrubt cutoff with a gray face and chest. The underparts are salmon on the flanks and whitish gray on the belly. The tail and tail coverts are black, and the eye and legs are red. The large, slightly downcurved bill is bright mustard yellow. The Giant Wood-rail inhabits gallery forest and tropical and subtropical marshes and wetlands, and is typical in the large wetlands of Iberá and Entre Rios.