Poorly bantam

[Clarechicken]

I have a 10 month old bantam that is not well at the moment.
She has her tail down and isn't mixing with the others.
She doesn't have a hard crop and is eating a little and drinking.
One of her wings is down and dragging on the floor.
She is laying very few eggs if any.
Poop a little runny but not too bad.
Any ideas?

 

[speedabug]

You need to isolate her in another pen to make sure she doesnt infect the others. Put her some food out and water maybe even put some vitamins in her water. Let her get plenty of rest.