[More mental notes, and he's definitely noticed the bats. The barrier too, come to that. Now that he's seeing it with his own eyes, he can see the heat shimmer of a dome, and roughly how far it extends.]

I don't have anywhere I need to be today, at least not right now. If the sun bothers you, we can go back inside - it used to burn me horribly, so I understand how that can be.

[Prior to adolescence, he was basically allergic to sunlight. He's still not immune to its effects, but it takes much longer to burn him.]