iv'e watched a few times the perigrine having a go at the sparrowhawks , once one swooped , at a sparrowhawk in the sky above asda at ibrox in glasgow at last second peel off and the sparrowhawk quickly moved away,once i was watching a sparrowhawk eating something in a field i was driving by ,i stopped to watch and within seconds from nowhere a perigrine swooped and hit the hawk on the ground feathers were flying,it swooped again and the hawk bu@@ered off,this happened in linwood west of scotland