Box of pigeons who won't fly

I wasn’t too lazy and prepared two boxes for the pigeons. Today it’s only 500 meters, but in any case, boxing and racing from someone else’s place equals stress. Of the 45 pigeons, only one is young; all other pigeons are adults from one to six years old. Many, and this is 90% of adult pigeons, do not race, they believe that when the pigeon was young it showed results and that’s all, it goes to breed. In my dovecote everyone flies, regardless of the offspring of the young or the age of the pigeon.