I'm getting some Sussex for the grandkids, with plans to have a different variety to show for each child. I have some Light/Coronation/Split chicks on order. Since I'm getting them as hatched, I'll have more roosters than I really need. I was thinking of keeping the roosters separated, and only rotate a select rooster in with the hens at specific times. So, how often does a hen need to be mated, daily, more or less often?