My wife feeds the wild birds and it has attracted feral pigeons, my birds do not go near them, I am re locating the feral pigeon by trapping and taking for a drive (to my friends).
I did have my young birds outside the loft in a wire cage prior to letting them out I also liberated the ybs from the cage onto the landing board and into the loft for feeding, the distance from cage to loft was increased daily, I did this for about 5 days.
It must be noted that the ferals do not go near my birds.
Hope this helps
John Norris