How do you do this? My chicks are 6 weeks old. I'd love to get a couple ornamental looking chicks (you guys suggest??) but I"m not quite clear how to add chicks to this little clan of 5 girls? I hear they have to be the same size? Well, little Bantam (sp?) would never be there size right? DO you have to keep them seperate until grown? I'm just loving those Silkies or some wild looking chicken pictures I've seen you guys post.