You need a copy of the poultry standard to determine whether they are show quality. The standard is a book which describes each breed and what the perfect individual would look like. There's an APA (American Poyltry Association) standard that has the recognized large fowl and bantams in it and the ABA standard with just the ABA recognized bantams. Since most of the shows I go to are bantam only and I only show bantams, I have the ABA standard. No bird is perfect, but you try to raise birds that come as close to the standard as possible. That being said, people interpret some parts of the standard differently. It's possible to go to a double judged show and place first under one judge and not at all under another.