Can you tell if they have the modifier by looking at them? I will get some pics later. For example I crossed a regular Silver partridge Silkie roo to a smooth drizzle partridge hen. They had several chicks two of which were drizzles. One was a regular drizzle the other a drizzle with shredded Silkie feathers (which are so cute!) I sold the silkied drizzle and kept the regular partridge frizzle. I'll get some pics soon.