A guy that lived next door to me used to keep an Eagle Owl (huge *expletive removed*) a Tawny Owl a Harris Hawk and a Peregrine Falcon. He had them out in the garden all day on perches and they made some feckin noise when they were getting fed. the Doo's never batted an eyelid about them they just stood on the edge of the loft roof looking at them. All the time they were there I was never hit by a hawk at the loft. Different story now he's moved.