Striated Antthrush

The striated antthrush is 22 to 23 cm (8.7 to 9.1 in) long and weighs about 120 to 150 g (4.2 to 5.3 oz). The sexes are alike. Adults of the nominate subspecies have a dark rufescent brown crown. They have white or buff lores and a white streak behind their eye on an otherwise rufescent brown face. They have a white spot on the side of their neck. Their back, rump, and wings are dark rufescent brown to brown. Their tail is dark olive-brown with a black band near the end and thin white tips on the feathers. Their throat is white. Their underparts are mostly white with a black scalloped effect on their breast and flanks, Their crissum is white with a buff wash and some light black markings. Their iris is dark brown, their bill black with a pinkish brown base to the mandible, and their legs and feet dark gray. Subspecies C. n. rubida has a smaller white patch on its neck than the nominate. C. n. fulvipectus has a rich yellow-ochre breast rather than white.

The striated antthrush is a bird of the central and western Amazon Basin. The nominate subspecies is found south of the Amazon River in eastern Peru, extreme northwestern Bolivia, and west-central Brazil east to the Purus River and perhaps beyond to the Madeira River. Subspecies C. n. rubida is found south of the Amazon from southeastern Colombia south through eastern Ecuador into northeastern Peru and east just into western Brazil. C. n. fulvipectus is found south of the Amazon between the Tapajós and Xingu rivers. Populations further west to the Madeira and south into northern Rondônia are probably also this subspecies. The striated antthrush primarily inhabits the floor of terra firme forest with sparse undergrowth. In elevation it reaches 500 m (1,600 ft) in Colombia and Ecuador, 450 m (1,480 ft) in Peru, and possibly 1,000 m (3,300 ft) in Bolivia.

The striated antthrush's diet and foraging behavior are not known. It is almost entirely terrestrial; it walks slowly and deliberately on the forest floor.