2 days ago I noticed our 7 month old welsummer walking slowly, then sitting in one place for long periods of time. The couple of days before this, she started going in and out of the nesting boxes often (for her first time), but didn't lay anything. She's been drinking but not eating for at least 2 days. She had poo caked below her vent, which I cleaned off. I also rubbed oil around her vent in case she's eggbound. I noticed light yellow diarrhea the past day and a half where she's been sitting. She has laid 1 soft shell egg (4 days ago), then her very first hard shell egg (3 days ago) (I found it below the roost broken in the morning, so I think it surprised her). We gave her some sugar water hoping to pep her up. She won't eat anything. Any suggestions would be most appreciated. Thank you.