I read recently the best ratio of rooster to hens is 1:10. I have a silkie cockerel (~1 lbs) and very large pullets (~7-8 lbs). I have 1:4 ratio. He hops on them and I "witness" things going on but am not sure if the eggs are fertile or not. Mine is really loving too; when he finds food, he makes a weird sound so the girls can come and eat his treats. Glad you are enjoying your new Rooster and that he is a great protector of his girls.