This is my first having Jersey Giants, and we have a rooster in the mix. So, he and his hens are about four months old and he is crowing...in a crowing competition with our Old English Bantam rooster. Today I went out to get eggs and he was trying to mount one of the Rhode Island hens. I have looked and looked and cannot find out when it is probable for him to actually fetilize. I plan to mate him to one of the Jersey Hens and a Rhode Island, and know in order to do this my conditions have to be controlled, I do not want my fertilized eggs mixed in with unfertilized. So I am going to pen him and the two selected hens seperately as a breeding group but need to know if our Jersey Giant rooster is ready or was he just trying to figure it out? I know the RIR's are all about 5 to 6 months old when they begin egg laying and being capable of mating, but knowing Jerssy Giants are slower to mature, I wondered if this was the case for him or should I pen him seperately now?