As much as I hate them they are doing what's natural, pigeons breed any number of clutches to survive whereas predators only breed one clutch as they are the top of the food chain. I you send a number of pigeons up when they are looking for food to raise their young them train them to hunt they are going to take it and they young are going to survive a lot more adding to our problem. Pigeon racing has to change to combat this or the problem will continue and not only that it will grow as we have seen in recent years, Bigda is right(I can't believe I am saying that) but the money machine of the RSPB won't bat an eyelid if pigeon racing is obliterated from britain. they will take notice if their wee cute pamphlet cover song birds get decimated as they they make millions from us buying into feeding and housing them in our gardens creating more income for them, but if their 1,000,000 members at £3.00 a pop on top of all their merchandise complained then they would do something about it. Will pigeon men ever agree to change, well not yet, because speaking out is demonised incase you rock the boat of a one way Titanic and we all know how that turned out