My wife had a snow day today and went out to give the chickens fresh water since its been freezing nightly. She noticed one of the five of our RIRs was taking deep breaths and wheezing with every breath. It's been really cold the last few weeks, so I have been keeping them inside their coop all day. I just started giving them scratch to pass the time and I make sure they have fresh water and deep litter. She doesn't seem to be eating or drinking at all, but I also didn't notice any discharge around her mouth or eyes. She stretches her neck up when she breathes. This is our first winter raising chickens, so any help would be appreciated. Not really sure what is wrong, but we brought her inside to watch her more closely and are keeping her in a dog cage to keep the other animals from bugging her. Thanks!!