That’s what I did with my boy. They can all still see each other but they are separated by chicken wire. The first few days he was upset about it but now he’s fine. He still spends time where they are but he can’t get to the hens. I’m hoping at some point to reunite them all, but this works too. He will be 3 this spring.You could separate him from the flock until he gets older and less likely to be rough on the hens.