Beginning of June 2008 I got a Plymouth Rock/ Americuana mix. I also have a rooster (mostly Americuana) and another hen idk what she's all black but they all came from the same place and it's likely the plymouth/americuana hen is related to the rooster (they had the same daddy). Well anyway...........she laid three eggs. That's it. End of story. why? She eats the same food, is fully feathered and seems happy. Any suggestions?