I have 2 yr old RIR hen, about 2 weeks ago I noticed her out just standing in the corner of her run. I checked her over and couldn’t find anything off I gave her some electrolytes and she was back to normal. The other day I noticed she was standing in the nesting box when I was collecting eggs, she was over top a few eggs from other hens and some what looked like a cracked egg (some yellow and clear slim and shell). I cleaned it up and went on my way. Today she was off by herself just standing puffed up in the corner again, this time I brought her inside and put her a box with some electrolytes. I don’t see anything odd other then her behavior. It’s night now so she is sleeping but will check her over more in the morning. Anyone’s input on what could be going on would be great. Her comb is nice red, eyes are clear, her abdomen doesn’t feel hard or full. She is fed laying feed and free choice of grit and oyster shells.