Well he managed it at last.6ft.solid wood fence,topped with coiled barbed wire and it still managed to get in.lost 14 out of 17 hens.At present I am seriously thinking of giving in.I am a pensioner so cannot afford a load of electric fencing and if I can't free range my birds it is of no interest to me.Attack was in broad daylight again and I just cannot see where he got in,none of the barbed wire is flatted and sum height of fence + wire is about 8ft.No sign of it digging in either,really and truly brassed off.