I have a mixed flock of 13 hens about 10 months old. Went out to collect eggs, and one of my Red Stars is standing in the nest, and is all puffed up. She did not even move a feather when I picked her up (she's usually quite fiesty) I felt her underside and backside thinking maybe she's eggbound but this is my first flock, and I don't really know what I'm feeling for. I have 2 Red Stars, and seems like I've only gotten one Red Star egg the last couple days. She would not take any BOSS from my hand and did not take water when offered. What might this be? What else should I be checking for? Thank you!