Wikipedia
Discosura
Discosura is a genus of hummingbird in the Trochilidae family. The thorntails are sometimes placed in the genus Popelairia ( Reichenbach, 1854), leaving Discosura for the racket-tailed coquette. On the contrary, some have argued for merging this genus into Lophornis, which they overall resemble, except for the highly modified tail-feathers of the males.