Rusty-winged Antwren

The rusty-winged antwren is 10 to 12.5 cm (3.9 to 4.9 in) long and weighs about 10 to 12.5 g (0.35 to 0.44 oz). Adult males of the nominate subspecies H. f. frater have a black crown and nape, a wide white supercilium, a black stripe through the eye, and black and white striped ear coverts. Their upperparts are ashy gray with scattered black spots and streaks and a black patch between the scapulars. Their wing coverts are black with wide white tips; most of their flight feathers are blackish with dark cinnamon red outer webs and their tertiaries are blackish with white outer edges. Voice: The rusty-winged antwren's song is a "stuttered series of notes starts with an accelerating series of 8‒10 rather melodious overslurred notes at initially constant pitch...shifting to a rather unmelodious raspy rattle of some 15‒20 decelerating notes". It has been written as "tu..tu..