The orange-collared manakin (Manacus aurantiacus) is a resident breeder in Costa Rica and Panama. The name is from Middle Dutch mannekijn "little man". It is a small, plump bird about 10 centimetres (4 in) long. Males have a black crown, mid back, wings and tail and an olive-green rump. The rest of the head, neck, breast and upper back are orange, and the belly is yellow. Females are olive-green with yellow underparts and resemble female white-collared manakins. At breeding time, males are involved in lekking behaviour on the forest floor.