I just lost my old english rooster I used him to sex silkie chicks for me he would separate 3 month old males and females and he was only wrong twice. I thought a serama rooster would be a good replacement for him since they are so Tiny, chances he would do the job are slim but worth a try. Do they require any special care different from silkies and rosecombs?
They are not at all cold hardy. I think that would be the main difference.