My hen was fine this morning, free ranging and having a good time. For the past few hours she has been all puffed up, standing still, and closing her eyes periodically. When I first noticed her, she was standing in the middle of the run and wasn't moving. I put dried worms out and while everyone feasted, she still didn't move. Then she slowly moved herself into the corner of the coop/run and has just been standing there. Thoughts? Egg bound? One of my red stars has been laying oddly colored/shaped eggs lately and I'm pretty sure it is her (but no way to be totally sure). I put out some oyster shell last week although it doesn't look like anyone has taken anything from it. Here are some pictures. Any advice on what to do would be greatly appreciated.