Ok, I think one of my hens managed to get past a fence, and into my tomatoes, and back again, without being seen. Symptoms include no appetite, eye's half closed, runny feces ( green plant material in it despite not having access to the yard for the past week ) and just sitting around. It will swallow if I place food in it's mouth, and it is drinking to some extent. It is isolated, and stock vitamins and electrolytes are being added to it's water. I have been hand feeding it plain yogurt with a little corn syrup added for energy. Is there anything else I can do?