Roraiman Antbird

The Roraiman antbird is 14 to 16 cm (5.5 to 6.3 in) long and weighs 24 to 31.7 g (0.85 to 1.1 oz). Males of the nominate subspecies are mostly blackish slate, with wide white tips on their wing coverts. Females have a dark gray crown and dark cinnamon-brown upperparts. Their wings and tail are blackish brown with pale cinnamon-rufous tips on the wing coverts. Their face is gray. Their throat, breast, and belly are chestnut and their flanks and undertail coverts olive-brown. Both sexes have a brown or gray-brown iris and gray to black legs and feet. Males of subspecies M. s. obscurus are slightly blacker than nominate males and females have slightly darker underparts than nominate females.Males of both subspecies usually have a black bill though some have a gray base to the mandible. Females of both have a black maxilla and a gray mandible.

The Roraiman antbird is found in the eastern tepui region where eastern Venezuela, western Guyana, and far northern Brazil meet. The nominate subspecies occurs on Mount Roraima that straddles the Venezuela-Guyana border. Subspecies M. s. obscurus is found on tepuis other than Roraima in Venezuela's eastern Bolívar state and adjoining extreme northern Roraima state of Brazil. The species inhabits dense understorey in tall evergreen forest on the tepuis, where it favors the margins of clear, swift, streams on steep rocky slopes. In elevation it mostly occurs above 700 m (2,300 ft) in Brazil and Guyana, though there are records as low as 125 m (400 ft) in the latter country. In Venezuela it mostly occurs between 1,000 and 1,500 m (3,300 and 4,900 ft).

The Roraiman antbird's diet and foraging behavior are not known but are assumed to be very similar or identical to those of its former "parent" the spot-winged antbird, which see here.