After much research, we have been able to name our friendly owl visitor. It was a Northern Saw-Whet Owl. This owl only weighs between 2 1/2 - 3 1/2 oz and only stands 7-8 inches tall. It can live up to 16 years, although with this long winter, there may not be enough food for the owls. This is part of it's permanent, natural habitat. Our little owl stayed 3 days in our barn, but now it's gone. My husband was able to touch it and stood a few inches from it.