I have two roosters and 8 hens, all housed together. I thought the roosters were doing their job, because they certainly chase the hens a lot, although I had never actually seen a rooster mating with a hen. I know they breed very quickly, so I wasn't worried until my broody hen wasted a month sitting on 14 eggs which all turned out to be unfertilized. Does anyone know what is going on here? All the birds are one and a half years old. One rooster is very dominant, but both have plenty of chances to breed the hens. The hens lay lots of eggs.