My girls are about 8 1/2 weeks old now and all are supposed to be standard hens. Granted, I know that some difference in size is to be expected because they are different breeds: 1 BO, 2 BR, 2 EE/Amer. One of the BR was the tiniest chick, she's now the largest of the bunch. But I'm really wondering about one of my EE/Amer. She's just finally grown to be about the size of a pigeon. And yet, she's probably 1/2 the size of all the others, including the other EE/Amer. As a baby chick, she was the same size as the others; this major size discrepancy probably began around 5 weeks or so. Is this normal? Healthwise, she seems to be fine. Always a very active forager, eats really well, never appeared ill. She does have some bare spots on the shafts of her longer feathers (these have been there since the feathers came in); always just assumed it was normal or that the other girls were picking on her a bit (haven't witnessed this, but I think she's toward the bottom in the pecking order).