The Slaty-breasted Wood Rail has blue-gray plumage on its head, neck, and belly. It lives in forest wetlands and eats plants, insects, larvae, and frog eggs.
Blue-gray plumage covers its belly, head, and neck; it is about 34 cm long.
It eats grasses, insects, larvae, and frog eggs. At the Rã-bugio reserve it has been observed eating Phyllomedusa distincta egg masses laid on leaves over water, climbing shrubs to reach some of them.
An extinction-risk assessment has not been added yet.