Okay, so I went out and bought some vitamins for the budgies (Avitech AviVita Gold), and some Probiotics (made by Morning Bird). The lady at the bird shop advised not giving ANY of it until they're done with the Baytril, because both can interfere with the medicine. Is this true? I think I read something about calcium being a bad thing with Baytril, so that would eliminate the vitamins for now. But the probiotics? I can't see why that would be bad.