[He may not be an expert on reading owl expressions, but the meaning comes across loud and clear.]

Ha ha! No need to look at me like that, my good fellow. You know I'd never do anything of the sort.

... But we may find out in one way or another if you make a surprise perch out of my hat again. Let's keep it to somewhere more stable, shall we?

[Like his arm, for instance. He offers it to Maiza for perching.]