I have been searching the threads but all I can find is people with sick chickens asking if it's asthma. My problem is I have a little silkie pullet, about 9 months old, who had a really bad cough for 2 months. Finally got vigorous because I was getting annoyed nothing I tried was working and I used oxine and tylan together. She is all better now and doesn't have a cough or a sneeze anymore. But now she has a slight weeze and she kind of quietly snorts when she is worked up. If I put my ear to her face I can hear her breathing where as my other one I can't hear anything. So my question is, after being sick for so long with a respiratory issue, could she have developed asthma? She acts normal, eats and drinks vigorously and poops fine. She has some good lungs on her too and likes to squawk loudly when she wants something.