Yesterday I noticed my beautiful red just sitting by herself in the yard near the drinking water (drinking often).  I was able to simply pick her up which is always impossible.  I hand fed her some apple and she did eat it(with some coaxing).  When I picked her up I found how skinny she was.  Her plumage was still beautiful and she had no pasty butt.  I'm not sure what her poops were like since they free-range part-time and have a huge run.  I haven't seen or smelled any bad poops in the coop or run.  I just went out a few minutes ago to grab her and bring her in for the special treatment.  I brought her in, put her in the box and she died.  I didn't notice any raspy-ness with her but I can hear it in a couple of my other hens.  I wonder if I should treat the whole flock?  There's 2 roos & 7 pullets, & 7 hens.  Most seem absolutely fine (other than one in molt with raspy sound) but I'm worried something is going around and don't want to lose more.  Also, I usually get about 6 eggs a day and now am down to 1.  Living in NH, though, days are getting shorter & cooler, so I know eggs will slow down.  I just didn't expect them to slow that much so suddenly.  Any advice?  Thanks in advance.