Everything we read regarding rooster to hen ratio varies from 10-14 hens to one rooster. My presumption is that ratio is to make sure all the hens are successfully mated. However, I wonder if too many hens can be detrimental to a rooster? I have one cockerel and 37 hens/pullets. I am not concerned if he is breeding them all or not, I just wonder if there is the possibility of either his health being put at risk (due to over exertion) or of him being injured (not so much I don’t guess since there is no appendage to break). In the grand scheme of things I know this has no relevance, but I am that kind of person who wonders about everything. And I will say my wondering has taught me a lot. FWIW, every egg I have cracked is fertile.