We just changed the pine shavings in the coop. This is not the first time to change it, and we used the exact same pine shavings from Wal-Mart, having purchased 8 bags of it at the same time. Last time it was changed, there were no problems with breathing, other than when we actually were in the midst of cleaning it out. This time, there is the distinct smell of pine, which I thought would be normal. What isn't normal, is that I can hardly breathe while in the coop. My nose runs terribly and I have to clear my throat constantly. I feel like my chest is going to burst while being in there. We opened one of the windows, and tried to "wave" the door while it was open to "wave" some fresh air in. My (grown) daughter put the DE in with the shavings this time, so I have no way of knowing how much she used. Just in case it was too much, I just now put another layer of pine shavings down, hoping that would do the trick. It doesn't. While it was close to bedtime, but not quite, one of the polish hens was roosting (the others hadn't hopped up yet, it wasn't quite time yet.) and was apparently sleeping, I think, her head kept nodding like she was going to sleep, and jerking awake-or was she dying? This was not usual for her. Is it affecting her and will the others have problems with it? When we were in the midst of changing it out, I caught (saw)one of the pullets "roosting" on the edge of the sand box container with her head tucked under her wing. This was before my daughter put the DE in the shavings. Highly unusual to see a hen do this, at a very unusual time of day for that to happen. It was 4:00 p.m. when we finished changing out the bedding. The other hens and roosters are acting fine. Any ideas? And how imperative is it that I take action, and if it is very imperative, what do I do? I do have the option of rounding them up and somehow finding enough boxes, dog crates, etc. for them to spend the night in our unfinished addition. Should I do this? Am really concerned.