Last week we noticed our Plymoth Rock chicken started acting listless. Her comb fell over and she has lost quite a few feathers. Also, there was a strange organ-like, chestnut shaped something in the coop with her feathers sticking out of it that I believe she passed. She is still not acting normal. Does this sound familiar to anyone? Ahh, and just now my husband came in and told me she is dead. What was this?????