Okay folks here it is, I have been dealing with a hen that seems to have chronically swollen sinuses, runny nose, bubbly eyes, and the infamous foul odor. I have treated with Tylan 50 as follows - 1st round was 3 days of .5 cc in the breast and .5 cc in under the skin in the neck. Day off, then 5 days of the same. She seemed to have gotten over the issue, which is when I put her back in with the of the flock. That was on Monday this week. Today when I was doing my afternoon rounds, I noticed that she was gapping when she breathed and the swelling was starting again. I also use VetRx on a regular basis. I know its limitations, but have seen improvement in other birds when it's used as a supplement. I really want for her to get better, but I am willing to cull her if necessary. Any and all advise would be appreciated.