When Veela became angry, however, they transformed into something more like Harpies - their faces turned into cruel-beaked bird-like heads, while long scaly wings burst from their shoulders, and they could launch balls of fire from their hands.

Veela had their own type of magic which did not require a wand. They had the ability to hypnotise and mesmerise most people attracted to women with their seductive dance, who would then try to impress them. Veela were described as looking like incredibly beautiful women, with moon-bright skin and white-gold hair that fanned out behind them, despite the absence of wind. On the contrary, their faces were elongating into sharp, cruel-beaked bird heads, and long, scaly wings were bursting from their shoulders -' - Veela becoming angry, after having been provoked by Leprechauns

Watching through his Omnioculars, Harry saw that they didn’t look remotely beautiful now. Instead of dancing, they launched themselves across the field and began throwing what seemed to be handfuls of fire at the leprechauns.

What is a veela