I haven't a clue as to what killed this chicken. No outward signs at an attack or blood, it just liiks like something sat on it. Everything was fine when I looked in on them this morning. When I went to collect the eggs about 4 this afternoon, the hen was dead. My grand daughter will be here in the morning looking for this hen. When she can't find it, my name will be mud. She has had this hen for about 5 years and whenever she comes here, the hen knows and causes a fuss until she goes down to pick it up. I told the wife I am going fishing and she can deal with the tears.