Went out to take care of the hens this morning, and I tossed them a piece of bread to distract them while I refilled their food. I do that every time. After filling their food, I went around to watch them bicker and noticed that one of them just sorta stood there with her mouth open. Didn't think much about it, and caught a convenient bug for them to eat. Put it in there - the chicken was laying down, mouth still open, and she ignored the bug. She seemed to be breathing heavily, and kept squinting her eyes like she was in pain. Any idea if this is a problem or not? Because I would like to know as quickly as possible.