I got this image a month or so ago at a local Osprey hot spot. It is safe to say that Barred Owls and Ospreys are not the best of friends.
The Ospreys took turns buzzing this poor Owl when it came out from the cypress trees and into the open. It reminded me a lot of King Kong with the fighter planes buzzing by him. This went on for 20-30 seconds and when he had time, the Owl took off and flew back to the trees. This alarmed his mate and she even came out to the edge of the trees to try to take some notice away from him so he could retreat back.