I have a 1 year old Barred Rock hen that is lethargic has no energy and stopped laying. She throws up brown discharge from her mouth when I pick her up. She also has watery brown diahrea. She is drinking but not eating. I have given her antibiotics in her water as well as the rest of my flock (8 Rhode Island Red hens and 1 RIR rooster). Has anyone out there had this problem , need advice. Thank You