Darkvision is great, but with the treeline and her being up in the sky it isn't until she's plummeting towards the ground that he realizes the wingshape is wrong for a wyvren. But he can't tell what it is.

Annoyed by missing with his spell, but cheered by the loud impact thud of the creature hitting the ground, he goes to investigate. He makes no sound as he approaches, floating a few inches off the ground. With the overconfidence of someone who rarely has to worry about his personal safety, he stands next to her and stares.

He has no idea what this is.

"Where did you come from?" He's pretty sure he would have noticed a blue flying person before. Or maybe the genasi he'd seen before suddenly grew wings.