[So long as they don't get the bright idea to shake the tree - or climb it - he thinks things will be alright. So far they don't seem to be doing either, and he takes advantage of that moment to get himself into a slightly better position, one where he's not precariously perched and three seconds away from being knocked loose by a well timed shove.]

Aye, well, that's the plan, but...

[He glances down to see one of them stretch up for a moment, pawing at a spot on the tree below them. It doesn't look like climbing so much as it testing to see if can reach the people in the tree easily, but it still makes him a little bit uneasy.]

Don't suppose you can use that magic of yours to make up some wee ice beastie to lure them away, can you?