My son has a small flock of Silkies. Fertility has been very low and he has had no luck with anything hatching from an incubator or by the hens. We have been checking eggs for signs of development by starting them in the incubator, we have switched fertile eggs to hens, and tried just hatching in the incubator, but fertility is very low. So far nothing has hatched. We have even removed feathers from the vent area to make breeding possibly easier with no real improvement. Does anyone else have this problem or have any suggestions?