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.
Jupiterimages/Photos.com/Getty Images. Doves are among the most abundant bird species in the United States and are also among the most hunted. The mourning dove, as well as being a graceful beauty, is distinct for the whistling sound it makes with its wings.hile in flight, the wings of the mourning dove make only a gentle flapping sound, inaudible to most due to the bird being airborne. But during takeoff and landing, the sound of the mourning doveâs whistling wings is unmistakable.