This afternoon started a little slow. The Great Horned Owl was in usual spot around 2:30, and I was thinking what am I going to do until fly out at dusk? Luckily, a mature Cooper's Hawk arrived and the owl decided to fly over to it to show it "who was boss". Then the Cooper's Hawk started calling and decided to try and show the owl who was boss. They ended up shifting from perch to perch a few times. There was no contact and it just a lot of bluster but fun to watch.
The Cooper's Hawk left but returned about an hour later to make it's presence known. This time the owl just ignored it.
While preening, the owl broke off a branch and chewed on it. It might have been using it to clean it's beak. It was hard to tell.