I was on the computer doing the multimedia thing when my wife came in from the garden and said there was a raptor over the fields to the front of the house. A raven was trying to harass the raptor. I was not sure if it was a Common Buzzard or a Marsh Harrier. It's beak looked like that of a Marsh Harrier.
The duel in the sky was short and the raven eventually flew off. The raptor tried to confront the more manoeuvrable carrion bird and I think that did the trick. Usually, the ravens and crows harass in numbers and the raptor retreats away from the air space. This one turned and twisted and tried to face the raven.
If a raven was struck by the talons it would be ripped from the sky. Ravens and crows are more manoeuvrable and can get into positions above or to the side, but they can only intimidate. They can't strike. The raptor can and that is the one advantage it does have. One blow of the talons and it is game over. This raptor tried and the raven decided that he who turns and runs away lives to fight another day.