クロアリドリ Cercomacra nigricans

Small slender antbird, found in pairs skulking through low tangles in forest and edges. Male is very dark black with obvious white fringes on shoulder. Female similar to male but gray instead of black and shows white streaks on throat. Could be confused with Dot-winged Antwren, which is less skulky and has larger white spots on wing and tail; also note very different female plumage. Usually heard more often than seen; listen for harsh nasal song emanating from from the undergrowth: “reh-er, reh-er, reh-er.”