One of our 5 month old Marans pullets began wheezing this evening. It is an almost "singing" sound each time she inhales and exhales. My husband heard her sneeze a few times, but I watched her for about 15 minutes and witnessed no sneezing. No mucus or loose poo noticed. She is on the roost currently, puffed up, her roomates are milling around getting their bedtime snacks and settling in. It is 38 degrees Farenheit outside, possibly a little warmer in the chicken house and no drafts but good ventillation. It shouldn't get below freezing tonight. The pine shavings were changed two days ago. I have a few questions: -Should be bring her into the garage or our house, or just leave her in the chicken house? -How contagious are colds/respiratory illnesses in chickens? -What is effective to treat this sort of thing, and can I get it at the feed store? We have only had chickens about 18 months, but I have past experience with parrots and I know this doesn't sound good. We are worried and would appreciate any advice.