I have 2 Roosters that are about 8 months old. I also have 3 Rhode Island Reds chicks / pullets about 10 weeks old. I'm not sure what the Roosters are but it has been suggested they are amber sex links. I only want and need one Rooster so that I can breed more. No my question is when a Hen mates does she always need a Rooster? Will she always be fertile? My Roosters aren't mean but they never had a female either so that may change their demeaner. The reason I'm asking is cause I want to see how the chicks are when they hatch so see if I want to keep the Rooster or not, and if I get another RIR Rooster will the new chicks look like the old Rooster since the hen has mated already.