A question for the experts . My naturals are above my garage and on open hole , some are for the distance races others the inland nats ,my problem is that my distance birds will be feeding ybs and are all over the place and not in boxes so feeding individual is not a option , how would you stop the other birds eating more than their share , at moment there are beans in a hopper but finding some birds are putting too much weight on . They do go on training van but a twenty minute fly takes nothing off them . What do you think .