Hi folks, New(ish) here, but not new to backyard chickens. I've got an old girl (14+ !!) that I feel needs some antibiotics. Her eyes have been intermittently goopy/closed for several weeks now. No other symptoms that I can detect. No sneezing, head shaking, rattling. Just the eyes. Maybe it's just "her time." She's lived such a long life already! Anyway, I figure it's worth a shot, but it's been a long, long time since I tried doing the math to figure out dosing for an individual bird. Hoping someone here can help me out. My local farm supply store only had one choice - Oxytetracycline. Dosing info. on the packet reads as follows: Chickens: 200-400 mg/gal Packets/2 Gallons Stock Solution = 5 to 10 Packet size is 181.5 g (6.4 oz) I'm lost! Thanks in advance for any assistance. "Snowy-the-Wonder-Chicken" thanks you, too.