A question for smarter chicken folk.....this morning one of my girls decided to stay in the coop...I figured she was laying an egg but she didn't I checked on her mid morning and early afternoon, she was sitting contented on the roost...I picked her up and checked to see if she was egg bound...couldn't tell, she slowly walk out of the coop and found a spot in the yard by herself...I tried to give her some scratch but she wasn't interested.....then she just walked away wanting to be alone....she is keeping her feathers fluffed out....there is nothing else visible I can see..your thoughts?
Did you check her crop? You can also deworm her. Those are my first thoughts.