So if I have the numbers right, you now have 3 roosters and 1 RIR hen? All at 6 months of age?
Yes...you need to get rid of 2 roosters and add some hens if you are keeping a roo.
You can get some older hens, but older hens bring health risks. Usually you should quarantine any bird (other than hatchery chick) for 2 weeks to 1 month to prevent transmission of disease to your flock.
The safest method of adding more hens is to get chicks and raise them. However, I understand a desire for more hens as you seemed to have gotten 3 roos and only 1 hen in your chick purchase.
So it depends on your ability to adapt to loss vs your need for more hens. If you go to a reputable breeder, and the birds look healthy, you can purchase pullets or young hens and after a quarantine, integrate by allowing some fence observation time for a few days. Then you can let them free range together.
Usually after about a week they are roosting together. Chances are, your rooster will simply adopt the hens and keep everyone in line....unless he is a jerk.
Another trick is to integrate by placing them in the roost at night. Usually they wake up much calmer together, especially if they have seen each other through a netted fence for a few days. Again, if the rooster is a good boy, he'll integrate everyone and keep the peace....unless he is still too teen hormonal...then he can be a jerk, so you might have to isolate him until the hens settle.
Usually a good ratio is 10 hens to 1 rooster, however, with some flocks a smaller ratio works.
LofMc
