Parker's Antbird

Parker's antbird is 13.5 to 15 cm (5.3 to 5.9 in) long. Males are almost entirely slate gray, with somewhat lighter underparts than upperparts. They have a hidden white patch between their scapulars and narrow white tips on their wing coverts and outer tail feathers. Their flanks have an olivaceous tinge. Females have an olive brown or olive brown tinged gray crown and ear coverts, a paler olive brown supercilium, and gray lores. Their upperparts, wings, and tail are olive brown. They have a very small or no interscapular patch. Their throat and underparts are tawny buff or cinnamon rufous. Voice: The song of the male Parker's antbird is "a muted note followed by higher-pitched, more intense series initially flat in pitch, then descending and accelerating as final notes shorten". Female song is shorter and has a higher pitch and downslurred notes. Its calls include "a rapid sputter of notes and a short, nasal, descending note".