Hi Alan.
I just hope he is not there for your long tailed tits! At the hide where I volunteer we witnessed the local Kestrel leave his perch and swoop through the bird feeders, fortunately all the tits saw him coming and took cover! It surprised us how quickly they returned (a couple of minutes at most) once he returned to his perch, a telegraph pole about 50yds away. He often spends ages sitting on this pole grooming or just watching, we have seen him go down and catch something on the ground below, possibly a vole.
It makes us laugh, a visitor will come down and get all exited, there is a Kestrel on the pole here and you are all looking at the tits and squirrels, yea he’s been there an hour on and off and we all have so many shots of him, it is boring now!
Cheers, Graham.