White-bibbed Manakin

The white-bibbed manakin is about 10 cm (3.9 in) long and weighs about 12.5 g (0.44 oz). The species is sexually dimorphic. Adult males are mostly glossy blue-black. Their chin, throat, ear coverts, and the sides of their neck are white; the throat and neck feathers are long and form a ruff. Their primaries and the inner webs of their secondaries are dusky. Adult females have olive-green upperparts. Their chin and throat are pale gray to grayish olive green. Their breast, sides, and flanks are pale olive green and their belly and undertail coverts pale yellowish. Voice: Male white-bibbed manakins make "a twangy seet' t't'u-u-u" during display flights. The species' call is "a high, thin, insect-like s-e-e-e-e-e-e-e" that sounds like a slightly blurry trill.