3 days ago I lost my almost one year old buff orphington It was particularly hard because I had nursed her back to health from a dog attack 6 months ago. The day before we found her dead, I noticed that she wasn't eating as enthusiastically as the others. She would kind of just play with the food. I was not too concerned because otherwise she seemed fine. When I picked her up I noticed that she was very thin. I picked up the other 4 and noticed they were very thin as well. I have tried looking at their poop but don't see anything unusual but am wondering if I should worm the 4 remaining hens just in case. I have two that are almost a year and two that are around 7 -8 mo. They are all laying. I am very scared I may lose the others if I can't figure out why my Buff died.