Yesterday my 13 week old Colombian Rock chicken's breathing became labored. We usually free range our chickens under supervision every day because our run isn't finished yet. Is she choking on grass? We've had a few chickens do this kind of thing but they usually stop in a few days. However, that being said, this is worse. She is eating and not overly lethargic. What could be wrong with her? Here is a video of the behavior. Sorry my finger is it. Edit: Oh poor thing. She acting much more lathargic now.