it depends on what is important to you.. any performance breeds even mixed ones can be flown or let out around the loft..except for maybe the older homing pigeon as it may fly off. three pigeons is an off number. so unless they are a trio like two hens and a cock they may get along.. but then you may have trouble if you have two cocks and a hen.. if they have plenty of room usually the can work it out..but it would be good to try to have pairs. mixing breeds usually cancels out the quailites of the specfic breed and you just get a nondiscript pigeon..which is fine if that is what you want and you can keep them for the long run or the rest of their lives as not too many people would want mixes.I have 3 Pigeons 2 are supposed to be homing pigeons and 1 is supposed to be a Roller. I wanted to know if I could put them in the same cage, and if they would mix? If they did mix would the roller/homing babies not roll?