Tufted Antshrike

The tufted antshrike is a large dark antbird, 20 to 23 cm (7.9 to 9.1 in) long and weighing 50 to 80 g (1.8 to 2.8 oz). The species exhibits significant sexual dimorphism, though both sexes have a crest (that usually is flattened), red irises, and a moderately long black bill with a hook at the end like true shrikes. Adult males are mostly sooty gray with a blackish forehead and crest and browish black wings. Adult females are mostly blackish brown. Voice: The tufted antshrike's song is a "short, slow, slightly accelerating series of 6-8 very high, slightly rising, strident 'sreek' notes". Its call is a "sudden rising shriek, like 'sreeew' ".