[Buffy can't help how she's feeling, she knows that but it's bothering her. She nods a little, tongue licking over her fangs.]

What's the point of the change? Do you have any idea?

[She can control herself, at least that's what she tells herself as she stands there trying not to drink the guy's blood. She nods again.] So you're a crow!guy of some sort or a raven?