Great Horned Owl.  For several weeks we had a Barred Owl hunting at our place.  Crows love to mob and harass owls.  Yesterday the crows found a Great Horned Owl just south of our house.  I did not get a photo of that one, but this is a photo of an exceptionally light colored Great Horned that I took several years ago.  Most Great Horned Owls are very brownish.  The one pictured her is probably a lighte phased Great Horned that drifted down from much farther north.