Adult birds can handle Cocci much better than babies... It's wise to treat them anyway as a preventative to knock it back in case they're about to be overrun. 
Happy to hear the chicks are recovering.. I hope that continues.
Good news about Cupcake, too! I'm thrilled.
You've done a wonderful job.
MrsB

Happy to hear the chicks are recovering.. I hope that continues.
Good news about Cupcake, too! I'm thrilled.

MrsB