flower has a tiny NN. My bantam NN roo is 12" but I have him in with D'uccles. They're not very big. I'm sure a Serama roo could do the job without any problem if you have some bantam NN hens. My smallest NN's are a bit larger than my D'uccles. They lay huge eggs though, as big as my LF Spitzhauben and almost as big as the Swedish Flower Hens. The birds came from eggs from DDD.Would it be possible to breed a bantam NN to a class a serama. has anyone tried. would you have to use artifical insemination. I think a serama NN would be awesome