Feathered Action: Falcon and Osprey

This is what I assume to be a territorial issue between two birds of prey. An Osprey flew over a large pool with a fish that it had caught somewhere else. Suddenly, a Peregrine Falcon that had been hunting shorebirds at the pool started chasing the Osprey. The Osprey is too large to be prey for the smaller Falcon. And I don’t believe Falcons are fish eaters so it wasn’t trying to steal the fish. I have to believe that the Falcon just did not want another predator in the area where it was hunting, even if it wasn’t a direct competitor. The Peregrine resumed its regular activity after escorting the Osprey from the scene. The Osprey continued on to wherever it was going before being harassed.