Fasciated Antshrike

The fasciated antshrike is 17 to 18 cm (6.7 to 7.1 in) long and weighs 35 to 40 g (1.2 to 1.4 oz). This species exhibits significant sexual dimorphism. Both sexes of all subspecies have a red iris and a heavy bill with a hook at the end like true shrikes. Adult males of the nominate subspecies have a black forehead and crown with a few very thin white bars. The rest of their plumage is thin black and white bars. Females have a rufous crown. Most of the rest of their plumage is thin dark brown and pale yellowish brown bars; their tail is barred with dark brown and pale buff. Voice: The fasciated antshrike's song is "an evenly paced series of 3–10 plaintive, lazily delivered whistles, notes longer than spaces, middle notes sometimes longer and at slightly higher pitch". The notes have been described as sounding like "weh". One author renders the song as "cü-ü, cü-ü, cü-ü..." and another as "weeo wEEo wEEo weeo".