I have a young hen, a little over a year old that's isolating herself, and was the first one on the roost last night. She has white/yellow opaque liquid poo. Her comb is bright red, but she's moving slow and has messy tail feathers. When I let everyone out of the coop, she was sitting quietly, while the others were "chickening". The rest ran out the door, and after a minute she did get up and go with them. But not to the feed pan, she wandered to the other end of the run, I never saw her eat or drink. This time of day, they all sit around, and that's what she's doing. She's recently been wormed, and was sprayed with permethrin last weekend with the follow up spraying last night. I suspect she laid a shell-less egg a couple days ago on the roost. I suspect her only because of where that egg was located, relative to her spot on the roost, so not 100% sure. Wondering about coccidiosis? (No sign of blood in poo-- it's milky white or pale yellow) She came to me at six months, and as part of what ended up being a lengthy quarantine, was treated for coccidiosis even though she was healthy the whole time. (two of the others had respiratory issues, and one just wasn't right, so they all got Corrid in the water for 5 days) From what I understand the coccidiosis is always in their body, but may only affect them when they are stressed/vulnerable. Right now I'm just watching her. I have one other who has a messy butt, but she is active, laying eggs, eating well, etc. Another who tends to isolate herself but always has-- she's flighty/timid, with poor social skills. It's the Barred Rock that I'm a little worried about. I am tempted to give her a bath, but she's not "stopped up" or blocked, and I am a little reluctant to risk stressing her. I could put her in a cage to see if she eats/drinks, but she's not getting picked on, not panting from heat, so I've left her with the flock. We are in a heat wave-- heat indexes at 100 every day, and we don't cool off a lot at night-- just down to about 78-80. After tomorrow, we're expecting a "cold front", with highs closer to 90 and cooling off to 65-70 at night. If the heat has been an issue, that may mitigate the situation. Oh-- they always have multiple water sources, I freeze waters to maintain availability of cool water. They get ice water in a flat pan to wade in, and frozen watermelon each afternoon. I add electrolytes/vitamins to the water about half the time. They have access to shade at all times, and a fan in the coop.