The male ones are. Females are witches. Ask around, I'm not the only one on here.

[Oh dear.] Yes, magic. It's what we call the things we can do. I can do more than bend the elements. I can make this fly. Turn one thing into another. Even disappear from one place and appear in another.

And Azula has this feather that allows her to world hop. It's quite useful. Especially when I was trapped in her body for a few days. That was before Ferb gave me one for Christmas.