Symptoms: weazing, sneezing and progresses into chest congestion. Started with several birds then the others started to exhibit symptoms a few weeks later. The original birds were not of the same breed and aquired at different times, and i do quarantine for 30 days before putting any new birds in with my existing ones. eyes get a clear, watery, bubbly discharge there is NO ODOR at all to the discharge or the birds and coop and they still have their appetites. I have been treating with water soluble antibiotics and VetRx around the eyes, combs, wattles. Yesterday started with Tylan 50 two drops directly into mouth. Questions: should I get the water soluble Tylan (I had the other on hand so that is what I am using now) and does the powder work faster than the liquid? If this is sinusitis, and I get them well, can I bring in any other birds in the spring?? Breeds in question: 10 MGB's, 3 cochins, 3 oegb, 2 ee crosses, all these birds are in a seperate coop and pen. I alsohave 6 free ranging mixed breeds that have not exhibited any sign of anything...hope I just didn't junx them. I am so worried about this because I love all these birds and they are my babies. I cannot even eat their eggs! It would kill me to have to cull them if this is something bad and non treatable.