These owls are also known as Arctic Owls and Great White Owls and aren't usually found in our area. The last reported sighting of a snowy owl in TN was in 1961. They are predators of small rodents and other birds and are native to areas of 60 degrees latitude and further north.
If the bird is still around this weekend I may try to take a few more shots before it heads back north. It's made quite a stir around the southern birding community as I've seen posts from people in Georgia and Alabama who have come to see the Great White Owl. If you have pictures of the Owl that you would like show everyone, email me it to me to post up here on the blog.
A Tennessee Snowy Owl Story