One of my RIRs died last night.This morning I found her stretched out on the bedding, died.. it was very depressing for me. One of the things that's really eating at me, is that I don't know how. She was being less active then the others (this was just the other day) and I noticed that she was smaller and lighter then the others. However, she was still eating, drinking, and running around. One thing I really noticed is that she seemed a bit slower, her reaction time was a bit delayed then the others. Please help, I don't know what killed her.