Within the last week my chicken has been having green runny stools. Noticed Saturday she was chert slow moving , when I picked her up she was very light. I put her in a pen by herself with water and food. She drank a lot of water and ate a fair amount of food and 4 grub worms I caught for her. Yesterday no worse or better . Today I gave her some meal worms she ate those. I mixed her some buddies food, vitamin water and a little antibiotic together and made a paste and she ate quite a bit. I just checked on her and she doesn't look to well. Labored breathing, no discarge so I don't know what else to do or what could be wrong. Anyone have any ideas ?