Well! I'm a new chicken owner but I have read the books and done the research and have hit a wall... We have 22 laying hens and 1 rooster. When we first brought them home they had the runs. We figured it was stress and choose to wait and watch for them to settle in. It has been two weeks now and some of them still have the runs. Every one's eyes are clear and bright, combs are bright red and standing up, feathers are good, smooth, clean, beaks are good, nostrils clear, no cough, no sneezing, eating and drinking well. All seem to be laying well. (We have one that lays soft shell eggs.) Ok. Remember runny poo...Today we found one of our hens dead. No signs of an attack, no blood, no drainage. I have checked them tonight and the poo under the roosts seem healthy, didn't see any runny but two hens have matted feathers on their back sides. One of them has (what looks like) yolk draining from her vent, and the other just has matted feathers. I can't find any clear answers to this. Should I treat with an antibiotic? Should I treat them for parisites? Both? They seem fine other than the matted rears. Sorry this is so long. My questions is...Why the matting on the back feathers? Thanks So Much!