You will want to for sure keep them caged in for about (I think) 1-3months. This way they will get use to what is their home and leanr how to home to it.I have 8 white homing pigeons. They are mainly for a hobby but I may release them for a wedding or other events later. I bought a shed and caged in a 4 X 8 side of it and have a avory in the front. Right now i just want to get to know them and train them to fly around the area. The birds are gaining weight and they seem to be doing pretty well but they have started to poop green in the last day or so. They are also getting more tame. They will come eat while I am near the feeder. I have vitamins the canker meds, grit and wormer. I don't understand the probotics. What is that?