Thanks again peeps!
Yes Gilly it is lovely when they have friends and Gizzy is Blackie's special friend.... Every morning when he see's him he "brrr's" and runs over to him and starts rolling on the ground!
CC came over yesterday and went round to the empty house and Blackie came out of the hole in daylight and sat looking at her!
I have to say he has lost his feral like way as he was not as hidey as I imagined him to be.... Oscar was worse when he did one!
I took some tuna high life in a pouch round to the hole and put approx a spoonful on the brick, to which I watched him pop his head out and eat, once I knew I had his full attention I brought Gizzy, I kept putting a blob of tuna towards the back gate... I then went and got Gizzy and da birdy, so I basically got Gizzy to follow me and da birdy and Blackie just followed too!
So I also think da birdy helped!