Okay so I bought these chicks all at the same time, they came as a group of "Black Layers" or something like that. All good, healthy, happy chicks with strong appetites, activity levels and good weights. They are now around 5-6wks old. This is what they look like now, they're so pretty Except for this one!! WHY is this one SO TINY??!? See her down in there to the right?? I am completely stumpped, I have no idea why she is so itty bitty and why she has not feathered in. she is identical to the rest, as in same breed(whatever is may be)... I am lost. any ideas??