Bingley (8 week Wheaten Ameraucana) has been sad and lethargic for 3 or 4 days. Found him sitting alone, hiding in coop in the dark... face in corner.. Started him on polyvisol vitamins last night.... had three doses.. seemed to have a happier look on his face. Eating and drinking just fine. I went to town to run errands and pick up vitamins for the entire flock to add to their water. They need it. Everyone was vaccinated for fowl pox on October 27th so I figured they could all use the vitamins. I left him alone for 2 hours and when I come home he is behind the wood where he hides sometimes and he is dead. So sad... I do not know why he died. Should I worry about the rest?