Nature in birds, our racing pigeons are we changing nature too much, what other birds etc breed in the months of December, January, and are changed when to moult (darkness system), I know fanciers agree some of those methods make better racers? going back to the old days before those methods birds raced and won, was there any difference in velocities etc then from now, there was certainly a difference in losses, yes now we have the BOP which is a reason for losses etc, thoughts on this and your methods, today, (just for a bit of banter if nothing else )