I had a hen die a couple of weeks ago. She had a severe case of mites. I did not know this until it was too late. I took all the necessary precautions after that to try and make sure it didn't happen again. I noticed a hen today that is loosing her feathers down to the skin, her breast bone is protruding and she is a whole lot less heavy than her sister. Would someone please tell me what they use for mites and what kind of a regiment that you use to treat and stop this? Also, they have not been wormed. I have Ivermectin and was wanting to know how much and how often to give them. Also, I have 3 silkies. Would you give them the same amt. as the larger chickens. Thanks One other quick question if I may. Is there anything else that I should be doing for them to keep them healthy? They have an exceptional diet with chicken feed and fruits and vegetables every day. Thanks