One of the coolest birds in the park was a roosting eastern screech owl. The bird is perched on the edge of a cavity in the tree trunk. Check out how well the bird's feathers blend in with the bark--incredible. This was a particularly exciting eastern screech owl, park staff told our group that it was amccallii, and it's quite possible that the American Ornithologists' Union will make it a separate species from eastern screech owl. So, I kind of banked a life bird for another day.
No wonder I've never seen a screech owl in the woods! From Birdchick.com.