[Rydia shrugs.]

I'm no expert on machines, but they could be like Toothless, for example. He doesn't have the wings we do, and these shifts and whatnot don't really affect him the way they do us. Some things will if they affect the area itself, as when we had the moon descending on our village, but otherwise...not really.

[The fact that she couldn't find him since this morning is a little worrying, but she assumes he's probably flying about with Hiccup.]