Hi all I have 12 hens in a backyard coop and recently 2 have gotten sick. The first got really weak and stopped eating and drinking so we culled it hoping whatever it was wouldn't spread. That was 1 week ago. Now another hen is sick. No respiratory involvement clear eyes no weird poop just stumbling a bit and getting really weak. Not rating or drinking. I gave them some wazine wormer mixed in their water and got vet to give her a broad spectrum antibiotic shot. Does anyone know what this might be or have any suggestions on how to save my hen? Thanks!