I mostly agree with Perris, I usually do.
I personally do not believe that any ratio of girls to boys or minimum or maximum numbers are "best" for every flock on the planet. My suggestion is to first determine your goals with the boys. Why do you want a rooster? Then keep the minimum number that will allow you to meet your goals. That's not because you are guaranteed to have problems if you keep more but that the more you keep the more likely you are to have problems. I don't know your goals. I don't know if the best number of boys for you is 0, 1, or more.
If you read enough posts and threads on here you will find that some people that cuddle their cockerels have great roosters. You'll find that some that cuddle have horrible roosters. You'll find that some that keep a hands-off approach have great roosters, some have horrible ones. You are dealing with living animals. You do not get guarantees of behaviors no matter what you do. Each has its own personality and will react differently. You've probably noticed that training dogs. Some are a lot easier than others.
Personally I do not cuddle or hand-feed my cockerels or pullets. If I need to handle them, I handle them. When I can, that is off of the roost at night. If I need to handle them during the day I lock them all in the coop if I can. The first one I do is the rooster, then toss him outside so he is not around when I'm handling his girls. That way he avoids the temptation to protect his girls if they protest me handling them. I've had a human aggressive rooster but very few. A lot of people cuddle their chickens (boys and girls) and make it work, I'm not trying to say mine is the only approach. It's what suits my goals and what mostly works for me.
About the poor girls being stressed by those mean old boys. Most of the time the pullets are force mated by the cockerels. That's the boys establishing dominance, has nothing to do with fertilizing eggs. The pullets are not laying yet. Sometimes that gets pretty rough, sometimes it isn't bad at all. Occasionally the girls will hide in the coop to avoid the boys, I've seen that once every 6 or 7 years but I have a lot of room outside. There have been a few times I've separated some boys because it was getting rough but most of the time I let it go as long as no one is being physically injured. To me that is mostly chickens being chickens as they go through puberty. Once they get through puberty it usually calms down tremendously, but getting through puberty can be rough to watch. Occasionally some never grow up.
For what it is worth my flock consists of one rooster and 6 to 8 mature hens but during breeding season I hatch enough that the total numbers reach in the 50's. By winter I've butchered enough that I'm back to my main flock so a lot of cockerels and pullets have gone through puberty.
My suggestion is to determine your goals and then start eliminating any you know you do not want to keep. After that go by what you see, not what some stranger like me tells you over the internet. Make your own decisions based on what you see. Solve for peace in your flock and for your peace of mind. This is supposed to be enjoyable for you, not stressful. You may need to make some hard decisions getting there. Good luck!
I personally do not believe that any ratio of girls to boys or minimum or maximum numbers are "best" for every flock on the planet. My suggestion is to first determine your goals with the boys. Why do you want a rooster? Then keep the minimum number that will allow you to meet your goals. That's not because you are guaranteed to have problems if you keep more but that the more you keep the more likely you are to have problems. I don't know your goals. I don't know if the best number of boys for you is 0, 1, or more.
If you read enough posts and threads on here you will find that some people that cuddle their cockerels have great roosters. You'll find that some that cuddle have horrible roosters. You'll find that some that keep a hands-off approach have great roosters, some have horrible ones. You are dealing with living animals. You do not get guarantees of behaviors no matter what you do. Each has its own personality and will react differently. You've probably noticed that training dogs. Some are a lot easier than others.
Personally I do not cuddle or hand-feed my cockerels or pullets. If I need to handle them, I handle them. When I can, that is off of the roost at night. If I need to handle them during the day I lock them all in the coop if I can. The first one I do is the rooster, then toss him outside so he is not around when I'm handling his girls. That way he avoids the temptation to protect his girls if they protest me handling them. I've had a human aggressive rooster but very few. A lot of people cuddle their chickens (boys and girls) and make it work, I'm not trying to say mine is the only approach. It's what suits my goals and what mostly works for me.
About the poor girls being stressed by those mean old boys. Most of the time the pullets are force mated by the cockerels. That's the boys establishing dominance, has nothing to do with fertilizing eggs. The pullets are not laying yet. Sometimes that gets pretty rough, sometimes it isn't bad at all. Occasionally the girls will hide in the coop to avoid the boys, I've seen that once every 6 or 7 years but I have a lot of room outside. There have been a few times I've separated some boys because it was getting rough but most of the time I let it go as long as no one is being physically injured. To me that is mostly chickens being chickens as they go through puberty. Once they get through puberty it usually calms down tremendously, but getting through puberty can be rough to watch. Occasionally some never grow up.
For what it is worth my flock consists of one rooster and 6 to 8 mature hens but during breeding season I hatch enough that the total numbers reach in the 50's. By winter I've butchered enough that I'm back to my main flock so a lot of cockerels and pullets have gone through puberty.
My suggestion is to determine your goals and then start eliminating any you know you do not want to keep. After that go by what you see, not what some stranger like me tells you over the internet. Make your own decisions based on what you see. Solve for peace in your flock and for your peace of mind. This is supposed to be enjoyable for you, not stressful. You may need to make some hard decisions getting there. Good luck!