(Dalton/Hogwarts AU) Julian would absolutely refuse to conjure a patronus. Not during class, not when Derek teases him about it when he, Logan, and Derek study in the common room together, not even when he’s alone in the dorm room.
It isn’t because Julian doesn’t understand the magic behind it, rather quite the opposite. He knows how patronuses work very well. And he’s terrified that his patronus won’t be a cat, or even a hedgehog, but a robin—just like the one that Logan had conjured when they began practicing the spell.