Welcome to BYC. This is a 9 year old thread, so to get more people to see and help you, I would start a new thread of your own in the emergency forum. Be specific with all of the symptoms you have seen, including ages and treatment that you have given. Here is where to post it, and click on the green box:I have a second hen with the same thing ! First one has died and second one is getting there. It’s the weekend but I only have three other hens so need to find out what it is and is it contagious!? I’m devastated but somewhat relieved that it’s not just my hens! Thank you
https://www.backyardchickens.com/forums/emergencies-diseases-injuries-and-cures.10/post-thread