I have a Rhode Island Red that has started sneezing. Their run in a bit dusty right now so I didn't think a lot about it. However, she has recently started sounding a little raspy for lack of better terms. Not when she crow, just walking around she will make a wheezing noise. She is eating fine and I believe laying eggs. I just dusted them all as she and one other were losing feathers. Hers mostly on her neck. I didn't see any parasite, but who knows. She was wheezing before I dusted them. She is supossidly about 24 months old. Any ideas what I should do or what it could be? Thanks in advance!