Hi! Based on this video (skip to 0:25), can anyone tell me what may be wrong with my chicken? She is about 8 months old, a mutt of different breeds and is the largest of the 7 hens we have (no roosters). I have seen her do this a couple of times in the last few days. Do you see how big her chest is too? It looks odd. I'm not sure if she is laying or not right now. She is always the first to get to treats since she is the biggest. No other pets. Thanks for any help you can provide!