Same expirence here. They are lonely and wanting some attention. And I also agree that you should get there as early as possible. I use extremly soft purrs and clucks. No yelping, nothing but soft purrs and clucks, and only about every 30 minutes. If you know their schedule, they are coming. It's just a waiting game then. But I know everyone likes to call them in. My Dad will sit and not even call until they are in sight. Then he just purrs them into range.

Let us all know when you get him and how it goes!

Trae