I have lost three chickens over the last few months. First was Little Jerry, who I think had an impacted crop or something. The next chicken to die was Shelby. She was a rescue chicken and was probably more than five years old, so I think it was just her time to go. Yesterday morning, my frizzle hen, Oatmeal, was acting very, very lethargic. She would not move from the coop at all. She was cold to the touch. She died later that afternoon. I want to make sure that I am not missing something. All of my birds are free range, so they are exposed to a lot of things to eat. They will be fine and then all of a sudden be dead or very sick. Does anyone have any ideas on what could be wrong or what I could do to keep this from happening? The others are all very happy and healthy. I was thinking it could be worms, but I have not found a safe deworming program. Are there safe dewormers that I can use on laying hens? Are there things that I can add to their feed to help prevent worms? What about impacted crops? Any info would be greatly appreciated. Thank you!