When I let me hens out this morning, all seemed normal. I tossed some mealworms to them before going back inside, but noticed my silver laced was roosting on the outdoor perch not going for the treat and she was all puffed up and sleepy looking. I checked her over the best I could think to and she looks normal overall. She jumped off while I was looking at her and went to this spot and has been laying there all puffed up since. What could cause this?