I have a chicken that just started sneezing today (she was fine yesterday) and has runny nostrils (when she sneezes, discharge comes out and gets crusty if I don't wipe it). I'm REALLY praying that this is somehow simply due to our extreme weather change we have had, but I have her separated and I'm keeping her warm/comfortable. I started to treat the entire flock this morning with Tetracyline in the water. I remembered that I had Sulmet on hand also. Which would be better to use in this instance? I'd like to treat with something I have on hand already. I'm also picking up electrolytes tomorrow and some more plain yogurt for everyone! Thanks for any advice/replies. I appreciate it!