I have 1 rooster with 5 hens ((I think) I know the rooster is a boy though).....I cracked some of our eggs tonight and none of them are fertile. I found a little white spot in the egg when cracked, but I compared it to some of the fertile eggs on BYC...way to small of a spot. Is there anything I can do to make the fertile rate higher? P.S. The rooster is a Cochin and the hens (I think) are 2 frizzles and 3 silkies.