While camped in the middle of nowhere last summer with Ron, I heard an odd "beep, beep, beep" sound in the darkness of the night. I was sure that it was a back up alarm on a commercial vehicle of some sort. I thought it was strange that such a vehicle would be working in the middle of nowhere at night. I asked Ron if he heard the sound. He had heard it all right. But he quickly informed me that it was the call of a "Back up alarm Owl??". I think that's what he called it. Ron?? I thought that he was pulling my leg. Anyways, we later heard several more coming from different directions that were apparently calling to each other. The guy knows his Owls. And he knows how to use his camera too. Great job Bud..