I just started to notice them within the week but all would be standing when I was in the brooder so it is possible they have just become worse. All the other chicks seem just fine. Her poop also seems normal - no weird color either.
She is drinking and eating as I have moved her into her own space as of last night and have monitored her much more closely. She is much smaller than the others but she is keeping up. I haven't noticed any bloody droppings and I don't think she is more sleepy, just unable to stand. She uses her wings to keep her balance as she shuffles places.
When I pick her up and attempt to lay her back down... she has trouble finding her legs. sometimes she just lets them sprawl out behind her because she can't catch her balance.