I'm wondering if my roosters aren't fertile yet?? so far I've incubated 3 eggs and none thus far have been fertile. The roosters are about 9 months old. Are they old enough to be fertile? I've never seen them get on the females.
Also since silkies are FLUFFY you might want to try and trim the feathers back away from their vent, the feathers could be stopping the roo's from doing their duty.