The white-bearded manakin (Manacus manacus) is a small passerine bird which breeds in tropical South America. It is found from Colombia, Venezuela and Trinidad south to Bolivia and northern Argentina. This manakin is found in forests, secondary growth and plantations. It is a small, plump bird about 10.7 centimetres (4.2 in) long. Males have a black crown, upper back, wings and tail and are otherwise white. Females are olive-green and resemble female golden-headed manakins. At breeding time, males are involved in lekking behaviour on the forest floor during which they puff out their neck feathers. This is a fairly common species with a wide range, and the International Union for Conservation of Nature has rated its conservation status as being of "least concern".