[He is being pet by a wing. That is a thing that is happening.

Yes, sitting down is a good idea.

He slowly slides to his knees, keeping a hold on her, one finger curiously moving against her neck to feel her soft coat. The softness helps soothe him a little, but he's still very jittery.]

How do you do any of that? You don't have fingers to pick combs or brushes up, and your noses aren't built to preen feathers...