This video says about itself:
This cam shows one display perch in a population of Lance-tailed Manakins on Isla Boca Brava, Chiriquí, Panamá, that has been monitored intensively since 1999. Lance-tailed Manakins are small passerine birds in the family Pipridae that live in secondary growth forests of Western Panama, Columbia, and Venezuela. Male Lance-tailed Manakins are black with a blue back and red crest; females are olive-green with orange legs, and have an orange or red crest. Young males initially look like females, but pass through two intermediate subadult plumages before attaining adult coloration in their 4th year after hatching. Lance-tailed Manakins are primarily frugivorous, and manakins as a group are important seed dispersers in tropical forests.
Courtship and Breeding
Lance-tailed Manakins, like other species in the genus Chiroxiphia, court females using complex multi-male displays. The webcam shows one display perch in the display area of one pair of males. However, these two males also perform displays on two other perches in their display area, albeit less frequently. The monitored region consists of 29 males and their display partners, with display areas of adjacent alphas usually separated by at least 50 meters. This concentration of male display areas is called a “lek,” and females visit the lek to evaluate lots of males prior to choosing whom to breed with.