Around 11.30 this morning he started making a terrific sqwauking and looking skyward. Plently of angry posing and lots of angry noise until we saw the reason – another peregrine!!! As it got close he took off after it like a Bat out of Hell and chased it off in a southeasterly direction with some very fancy flying. He returned about 15 mins later (having chased the intruder a very long way off – it could have been one of last years’ juveniles) made several passes around the spire and of course in front of the missus (showing off I suspect – no reaction from her though!!) and disappeared up to his favourite spot on the north side of the spire.