Good luck on showing your Rollers. At this time I don't believe there is a standard for rollers. Just make sure it is healthy and in good shape with great feathers and good body condition. Thats how I won with my roller in 2008 at our Tennessee Pigeon and Dove show. The judge said the cock bird was in good shape,for the flying the breed needs to do. He qualified because he matched the critia for what his breed did