Thank you all for the encouraging words. You're right, if something was really broken she probably wouldn't be walking around at all. She never liked being handled much before, so I don't want to mess too much with her. But I will try to take her aside & offer her some special food, to keep her energized. She seemed to be holding her head just a bit higher today, but that could have just been my wishful thinking. She makes you want to ask her "What did you lose? Can I help you look for it?"
Congratulations to all of you who were able to read & understand the info in that linked article. I confess I was as lost reading the English as well as the Spanish version. Perhaps it does help with the coccidiosis, but is it also recommended for pain relief in chickens? And how would you dose just one bird? Separate her & put it in her water? Or push a pill down her throat?
I appreciate your imput on Clementine's behalf.