I left my RIR out to free range Monday and every thing was fine. My wife got home and they all came running to her except for one. I figured she was dust bathing because that's were she was last I seen her. About 45 minutes later we found her laying beside the whole she dug. She was died. I never thought that a death of a chicken would upset me. But these girls are like pets to us. Of course we gave her a proper burial. I checked her no marks from preditors at all. Is it some thing I could of done? I just want to make sure that it doesn't happen to any others. By the way she was only 15 months old and showed no sign of illness.