Harpies

Harpies are a female bird monster who are known in Greek and Roman mythology to be "snatchers" as their name means "snatchers". In tradition mythology, harpies are supposed to be hybrids of humans (women) and birds. Hesiod calls them two "lovely-haired" creatures, the daughters of Thaumas and Electra (not to be confused with Electra, daughter of King Agamemnon), who were sisters of Iris. Pottery art depicting the harpies featured beautiful women with wings. Roman and Byzantine writers detailed their ugliness.

Also, despite this, harpies aren't combinations of human women and birds in Monster High, but instead, fullbred female monster birds, they are still bird-related monsters who can only be female, through-and-through. Good examples of harpies are Quill Talyntino and Avea Trotter, who is part harpy, part centaur.