Very Difficult to identify nowadays Stuart with so many Hybred birds being released ,there has been one down here of same description as you state for over a year now ,I have talked to the bird of prey men in the town and they have not gave me a constructive answer ,Do know We have Sparrowhawk ,Goshalk,Peregrine,Hen Harrier in abundance even the osprey is a common site in these parts The Peregrine activity has been the worst I've seen for 3/4 years at present its a lottery letting the doos out Not scaremongering mate just telling it as it is Atb Mick