Last week, my 7 month old barred rock was vomiting a clear liquid. At least I think that's what was happening? A clear liquid kept coming out of her mouth. When I picked up her to see if I could determine what was going on, the discharge increased. She was lethargic and not very interested in eating or drinking. We isolated her and the next afternoon she was back to her perky self. She seemed anxious to get out of the small enclosure (an old dog crate, which we use to isolate chickens) and seemed healthy. She was eating, drinking, and energetic. So we put her back with the others and she eagerly ran into the coop and laid the egg that she'd apparently been holding all day. (She normally lays in the morning, but I guess didn't want to lay in the crate.) A week and a half has passed, and she hasn't laid since. We haven't seen any more of the clear liquid (vomit? water?) coming out. But she's sometimes lethargic and sometimes more energetic. She's eating and drinking, but not very enthusiastically. Like, if I throw out some scratch all of her sisters run to eat it, and she just stares at it. And then maybe eats a little. She's moving quite slowly. Her comb is looking kind of pale. At first we thought maybe she wasn't laying because the night in the garage in the crate could have been traumatic and she needed to get used to her normal environment again? Or maybe because of the recent, sudden weather change. (Summer ended and fall began quite abruptly, and temperatures dropped about 20 degrees, right around when this happened.) But now she hasn't laid an egg since 9/26 and we're worried. Not sure what might be wrong with her, or what to do. Ideas?