A large ground-dwelling cuckoo. Patchily distributed from Honduras to Brazil; always rare and difficult to find. Unmistakable if seen well. Look for a robust bird with a long tail, shabby crest, and stout pale yellowish bill. Overall brownish with a black breast band and green and purple metallic sheen on the wings and tail. Singles or pairs are most likely to be found following an army ant swarms on the forest floor. Occurs in mature lowland forest, occasionally into the foothills up to around 1,600 m.