This video says about itself:
Hail Hail The Lance-tailed Manakin Gang’s All Here – April 5, 2019
A female, two adult males and a juvenile male all shared the display perch at once today. The males took turns practicing their display. The juvenile male in attendance got a thorough and vigorous dance lesson.
Watch Live at http://allaboutbirds.org/manakins
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.