Alright. Here's the deal. We still have the 27 chicks. One is VERY VERY TINY compared to everyone else. I'm not just talking small, I mean TINY. She looks like a dwarf next to everyone else who are more than DOUBLE her size. She's the same size they all were about 3 weeks ago. We've nick-named her Thumbalina, because she is just sooooo small. She seems to eat, drink, and poo ok. She is active, but sleeps more than everyone else and doesnt ever come outside when I open the coop door. She gets chilled easily (which is why I think she doesnt come out) and takes longer to warm back up than the others. She is fully feathered and her body seems fine, legs and feet are fine, beak and head are fine too. No pasty butt, or weird poops. She's just so gall-darn SMALL. ChickenDuck (our biggest roo at almost 6 weeks) dwarfs her by being nearly triple her size. All the other pullets are at least double her size. Is she just "petite" or is she failing to thrive? Will she ever catch up, or will she eventually die from some problem that is keeping her small? The kids have already counted her out, and are withdrawing from her because they think she's going to die. Any ideas?