Here's one of the good things about this owl: he is TINY.

If Pansy can send him to deliver to Fred while George is either asleep or gone, maybe you can both keep an eye out for him -- just to see if you spot him at all, when he's watching you for a chance to make his delivery. Because if he makes a delivery to Terry, his ability to hide and to solve problems is more important than knowing in advance exactly where Terry's sleeping.