Very helpful!
Edit to ask - how many pullets/hens do you have to go around? Per boy...
It really depends on the rooster! I have found a very ambitious rooster can handle 12 to 15 hens with no issues.
Then, there is my gorgeous lazy slacker here, who has been having problems. I had him with 10 hens and maybe only 1 in 6 eggs was fertile - and that's being generous? It was pathetic. I now have him in a smaller pen (less room for the hens to run away) and with fewer hens (only 4) and the girls are the tiny "old school" Alohas that are the Leghorn size, easier to mount.
It took a full month before I realized how pathetic this rooster was, because it takes that long for the old roo's DNA to clear out, so I only discovered how bad it was over weeks of candling. I'm currently right in the middle of that process with these itty bitty girls, so I don't know if the smaller pen is working, or if these girls will eventually be laying blanks as well.
Total bummer, because he was the roo I was most excited about using this year. He's a huge Sussex, a Buff Sussex and Speckled Sussex cross, so he carries spots but is also big and light in color.
The (very few) chicks that I did hatch from him? They are looking AMAZING! I am hoping that there will be a couple of his sons with a higher libido.
Anyway, moral of the story: Always keep a back up rooster, or two, because you could run into predator issues, fertility issues, etc. And they tend to not get super aggressive until they are mating age anyway, so youngsters get along great.
Worst experience ever? When the gorgeous Aloha roo that I'd been saving to breed dropped dead for no reason right at 5 months old. I had not kept a back-up that year. No chicks could be hatched for about 3 months, until the next baby in line was old enough. That was awful!
But at the time I only had one pen that maxxed out at 20-25 chickens and I was trying to keep numbers down. Things got crazy here when I leased out my horse and turned my huge horse barn into the World's Largest Chicken Coop. It holds 50 easily. Plus I have to two breeder pens, where the original pen was, and one small crappy breeder pen that can barely accommodate 5.
I hope to add at least 2 more breeder pens, plus a special grow out pen for chicks in the future. (It never ends!)