I have 9 week old cochans that I got at a flee market (mistake). I believe where sick a that point. Sure where stressed when they came home. Seamed slow to eat and drink (3 weeks ago). Put them on chick start medicated right away. Noticed sneezing and nazal discharge with fowl smell. Started them on a full dose of sulmet (for coccidiosis). Didn't help. More active babys. Then I started them (5 days later) on duramycin10 800 mg (5days in to it). And they are not better. Not worse but Im out of ideas. I'm new at this and have followed all advice I can find.