Male Lance-tailed Manakins pair up to perform choreographed courtship displays for females. Known as cooperative courtship, it involves one alpha male and one beta male, who are not closely related, working together to attract the female. While it might not seem like a good deal for the beta male, the betas gain experience in courtship that could come in handy when they attain alpha status.

More info and transcript at BirdNote.org. 

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