I've seen no sign of trouble in any of my flock. Early ast evening this one hen was under the coop while everyone else had roosted for the night. I shooed her into the coop and she had no trouble getting up the ramp and into the coop to join her cohorts. I thought the fact that she was alone under the coop was strange, but I checked her out and she appeared to be okay. . .alert and perky. Today when I brought some goodies to the girls, she didn't come out to the fiesta. I found her in the coop, dead. What illness has no symptoms? Should I worry about my other girls? I can't send her to the lab; I've already disposed of her. If there's a problem, does anyone know anyone in NC who could come to my chicken yard and appraise the situation to see if there are any signs of trouble? As always when one of my flock dies, I feel guilty.