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Lots of people quote the 10 hens per rooster guideline. That is really the number of hens a rooster can reliably keep fertilized. The rooster will still have his favorites that he will breed more than the others and they will show signs of his affection.
I have 10 hens and one rooster. Two of my hens have small bare patches on the base of their backs. Three others show rough feathers in that spot. The other 5 are in near perfect plumage.
I have 14 pullets and a cockerel that are nearly 11 weeks old. I am expecting that the cockerel will be knocked around quite a bit by the hens and the rooster when the hormones start flowing. It's rather the way of things. Hopefully it will not get bloody.
My flock is kept in a large coop (8'x12') with 23' of roosting space and a large predator proof run a (12' x 28') where the pop door is always left open. They are let out into a 1/4 pen in the morning. This gives lots of room for evasion.
If your birds are confined in the coop for any length of time after they come off the roost and before you let them out, things could get ugly if the cockerel can't get away from the rooster when his hormones kick in.
But these are all generalities. The flock dynamic and the personalities of the males will determine if they will work out a compromise and exist in relative peace. A few more pullets may help.
Cross your fingers.

Lots of people quote the 10 hens per rooster guideline. That is really the number of hens a rooster can reliably keep fertilized. The rooster will still have his favorites that he will breed more than the others and they will show signs of his affection.
I have 10 hens and one rooster. Two of my hens have small bare patches on the base of their backs. Three others show rough feathers in that spot. The other 5 are in near perfect plumage.
I have 14 pullets and a cockerel that are nearly 11 weeks old. I am expecting that the cockerel will be knocked around quite a bit by the hens and the rooster when the hormones start flowing. It's rather the way of things. Hopefully it will not get bloody.
My flock is kept in a large coop (8'x12') with 23' of roosting space and a large predator proof run a (12' x 28') where the pop door is always left open. They are let out into a 1/4 pen in the morning. This gives lots of room for evasion.
If your birds are confined in the coop for any length of time after they come off the roost and before you let them out, things could get ugly if the cockerel can't get away from the rooster when his hormones kick in.
But these are all generalities. The flock dynamic and the personalities of the males will determine if they will work out a compromise and exist in relative peace. A few more pullets may help.
Cross your fingers.