Sorry for your poor girl 
If it were me, I would treat the whole flock. There is a corid dosing chart on this site somewhere. I think it is in @casportpony 's signature. There are different doses for preventative through severe, liquid and powder. RIP your hen.
If it were me, I would treat the whole flock. There is a corid dosing chart on this site somewhere. I think it is in @casportpony 's signature. There are different doses for preventative through severe, liquid and powder. RIP your hen.
