Bamboo Antshrike

The bamboo antshrike is 16 to 17 cm (6.3 to 6.7 in) long and weighs 28 to 33 g (0.99 to 1.2 oz). This species exhibits significant sexual dimorphism. Both sexes have a small crest, a dark brown iris, and a somewhat heavy bill with a hook at the end like true shrikes. Adult males have a black forehead and crown; the rest of their plumage is thin black and white bars. Females have a rufous crown with black tips on the crest feathers. Voice: The bamboo antshrike's song is "a loud, slightly descending series of 8-15 ringing metallic tchink notes". Its calls are "a sharp tchew! note" that is often made in a series, "a thin, dry rattle", and "a whining ewwee?".