I have three chickens that live in my backyard in Portland, Or. I don't know exactly how old, less than a year, they started laying last August. Clarice is all white and maybe 6-7 lbs? This morning when I opened their door, the other two bounded out as usual but Clarice wouldn't leave the coop. I let her be for a while, then took her out and looked for problems, she stood perfectly still for me (unusual!) and let me look, I didn't see any overt problems, her vent isn't pasted over, no wounds or swelling or discoloration that I could see. I changed the straw she is sitting on and offered her scratch grains and some zuchini and melon but she didn't want to eat anything. I put a little water and food in with her but she's not interested in eating (unusual!) and just sits there. She's not moving around or giving any evidence of pain or distress but clearly something is very wrong. I noticed that someone (don't know which) had some watery stool in the last few days, but no weird color, just regular greenish grey white mixed together. They coop up in a kitchen cabinet in the yard at night with the doors closed so no critter got her. Nothing has changed real recently, they sleep on straw that I change about every 5-7ish days, they eat Payback brand pellets for layers and multigrain scratch and fruit and veg scraps from the kitchen for treats and oyster shells and lately some flax seeds. They have water in a water jug available that I change/refill every few days, they all scratch in the backyard which does have some bits and bobs of plastic metal and glass leftover from the previous owners that I try and clean out when I see but keep finding more bits so maybe she ate something bad. The local feed store recommended Sulmet powder (sodium sulfamethazine) which I'm willing to do if it seems like a good idea. Any advice would be enormously appreciated! Does anyone know what might be wrong? If the other two chickens sleep on the top shelf of the cabinet and she sleeps on the bottom are they likely to be safe from contagion? Should I throw out my eggs? (I don't know who lays which one) Should I use the Sulmet powder? I'd rather try and manage this without a vet--thank you for any help!