when our ybs start to fly strong i put a pole up with a bag on the end when i take it down I expect them to drop, this is difficult for a week or so but it is worth it, this stays with them for the rest of their lives, pole up = exercise, pole down = trap.................they too fly the skies out and I don't have to train old birds this way except about 5 x 8milers before season starts, pigeons are like any animal they are creatures of habit they will do exactly as you expect of them if they are rewarded for their efforts.