As odd as it seems, we recommend being extra nice to this owl.
We doubt that you'll have any trouble with monsters though, because once they see how welcoming you are to their spooky bird friend, they'll leave you alone. Guess Whoooooo?Looks like you have a visitor for Halloween! It's a little odd for a magnificent bird to be so friendly, and it's possible that it's actually a witch or a wizard in disguise.