The man knocks out her assailant (Schwibethus), only to discover that she is in fact an Harpy, a winged white bird, larger than an eagle, having the (bald) head and breasts of a woman.
The man knocks out her assailant (Schwibethus), only to discover that she is in fact an Harpy. He stares in awe and amazement at the extraordinary apparition: a magnificient winged white bird, larger than an eagle, having the (bald) head and breasts of a woman.