Well keep chasing him!! Maybe it will snow some this week so you can chase him in it. Maybe some deep snow. Yeah that would be fun!! Then you can actually chase him until they literally fall off in front of you. Or you can chase him until he falls down - even better! Then you can just go pull them right off his head. Be sure to take a hack saw though, they might not be totally loose yet might have to take his whole skull plate at that point.
"Pics or it didn't happen!"