I have twelve chickens all of them are four months old, Noticed one of them a black jersey giant hen, acts weak, not eating much, does not move much not like usual, and has yellow diarrhea. I separated her from the rest of the flock in a small cage. She is drinking water, and eating a little. I started the whole flock on medicated chick starter, and switched them to flock raiser at 12 or so weeks old. Any advice to protect my flock and help the sick hen. This is my first flock.
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