P.S. Roxie:

If you have bird food on the ground in your yard, you probably have owls and just don't know it, because they are active at night. Why? Because there are usually some meeces (or even rats) that come after dark and have a heyday eating the food that has fallen during the day...

Also, those boxes are designed for Screech Owls, a small owl. If you want to put out boxes for larger owls, you can probably find other sites on the Internet that have larger boxes. You have a big yard though, I would imagine you will have no trouble drawing owls in to live...

Cathie