I posted before but no help? I have 6 chickens, 4 are 11 months, 2 are 6 months. One of the older ones started to walk real slow, stumbling over things, and now just sits in the corner. I am seeing her drink water, and eats if I put it in front of her. That was 3 days ago, now her sister started doing the same. Both are Buff Orpingtons. The other 4 are perfectly fine. One of the sick ones actually layed an egg last night. Checked for impacter crop, nothing. Not sure what to do? Anyone else have these symtoms?