I had to put a new roof on my loft and improve predator proofing which turned into a much bigger, better project with lots of nest boxes, etc...but in the meantime,during construction, my pigeons started hanging out on my enclosed balcony. I leave the door open a bit for them. I gave them some cardboard boxes and they have now had babies in there. They are free to come and go. But now I want them to see that their loft is again habitable.I can get them at night when they are on their nests and put them into loft but I am afraid they will abandon their babies if I move their boxes. What to do? They have been evicted from loft for three months now. Any advice is appreciated. I have only about ten birds.