I think you would be better contacting The British Homing World http://www.rpra.org/british-homing-world/ this weekly magazine has a letters page which would enable you to reach a much bigger audience. Along with your query add your email address and/or phone number. Wing stamping. Asking the question the way you have could be a little confusing. We now wing stamp our pigeons with our contact details on in case the pigeon should get lost and enter another loft. Prior to this wing stamping was used as a way of verifying a pigeon, a series of numbers/letters was stamped on a pigeons wing by a committee just before it left for a race . The owner of the pigeon wouldn't know the sequence of numbers/letters on the pigeons wing until it arrived home.