Whether they have any extant function or not, they have lost their former function and in that sense they do fit the definition of vestigiality. Vestigial structures are often called vestigial organs, although many of them are not actually organs.
There are quite a few birds famous for doing ritualized mating dances, so I would only list 5: The Red Capped Manakin, The Black-footed albatross, The Western and Clark's grebe, The Superb bird of Paradise, & The Victoria's riflebird.
This feature is not available right now. Please try again later. Tinikling-This is one of the most popular and best known of the Philippine dances. The dance imitates the movement of the tikling birds as they walk between grass stems, run over tree branches, or dodge bamboo traps set by rice farmers.his feature is not available right now. Please try again later. Tinikling-This is one of the most popular and best known of the Philippine dances. The dance imitates the movement of the tikling birds as they walk between grass stems, run over tree branches, or dodge bamboo traps set by rice farmers.