Those deer will be used to those wind chimes in less than a week if there is something that they want to get to to eat in that area. Several years ago Farmer NW of Jefferson was getting serious crop damage from deer and set up an air cannon on his soybeans that would go off every 15 min. or 20 min. Scared the crap out of the deer for the first week or so. By the end of week two, you could sit in the back of the truck glassing from 700 yards away and those deer wouldnt even raise their heads when that cannon went off. They'd just keep right on eating.

I've had turkeys gobble at a slammed truck door, distant gunshots, police and fire sirens, you name it. Any sudden loud noise. That air horn BC was suggesting might just get one fired up and hammering. In which case, Brad would need to thank his neighbor.