unidentified bird

Hi

Yesterday afternoon I parked my car in my garage, an open fronted, open roofed double type. I heard loud wingbeats and assumed it was the swallows who often nest at the top of it, though much louder than them.

Then a bird flew repeatedly round in the rafters only a short distance over my head occasionally perching in various places. It was in beautiful condition, an elegant adult bird with completely black back, red head, light coloured narrow bill, larger than a blackbird, underside pale grey with an area of barring. If I'd only seen the underside I would have thought it a bird of prey..

I can't find anything in my books. Any ideas?