Barred, or Spotted?

We hiked through Cedar Creek Park again today, and this beauty flew across the trail in front of us, and landed on a nearby tree.

I don't know my owls, and aren't sure whether this one is a Barred owl, or the more uncommon Spotted owl. I do know that he (she?) was very curious about us, especially when I started hooting at him. Each time I tried to imitate his call, he'd swivel his head around and stare at me.

It was dark in the woods, and I had trouble getting pictures in focus. These turned out the best.