Broken Back???

[vvarela2001]

I think that you should have seen symptoms of Mareks when she was younger, since the common age for symptoms to show up is under 25 weeks old, or 3 weeks after exposure by a new bird. Check your feed since it can unexpectedly become moldy and turn blue or green during hot humid summer weather. Dehydration can sometimes cause lameness and overall weakness. I would say that an injury may be likely, but you may want to explore the use of a chicken sling for her recovery.

This was super helpful! You are an angel, thank you!!