flying free

I have a loft of prisoner birds and a loft of birds that i let out regularly. They are right next to each other and the prisoners watch the other birds flying around all day. Recently i have had the urge to let the prisoners out with the other birds. they are all homing pigeons, but I recently...

I get new birds and cage them in the coop for 4 weeks feding and watering them and taming them. After about 4 weeks we are looking at free flying them and they generally clear off onto the house roof and roost somewhere lese rather than in the coop. Two questions, how do I get them to go back...