 Booted racket-tail

The booted racket-tails are a small group of hummingbirds in the genus Ocreatus that was long considered to have only one species, "O. underwoodii".Field research by Karl-L. Schuchmann published in 2016, however, found notable differences between some populations traditionally assigned to "O. underwoodii", and recommended that the taxa "annae", "addae", and "peruanus" be raised to species level.