This is a large woodcreeper with a hefty straight bill. Look for the combination of pale streaks on the head and breast and dark barring on the belly. Large range from Central America to northern Argentina, but usually uncommon. Occurs from lowlands up to around 2,000 m. Typically found in mature forest, singly or in pairs, sometimes following a mixed-species flock or ant swarm. Listen for a loud ringing trill that usually falls slightly in pitch, where each note sounds clipped.