last night I put the chickens to bed and noticed that one hen was asleep in the nesting box. i thought little of it. the next morning, when all the other chickens ran eagerly out of the hen house, she stayed there. i investigated, and i noticed some blood on her breast and behind her wing. it is not dried. this afternoon, she is breathing very heavy and isn't interested in eating or drinking. i'm not sure exactly where she is injured or how. we're hoping that some jerk didn't shoot her or something. we've got her isolated in a pen with fresh bedding, food and water. is there anything else we should be doing for her to see if she recovers? i'm worried that messing with her too much or rubbing something on her wounds would increase her stress right now. she looks a little better last i checked ... she's standing on her own, but i'm really worried about the breathing, which seems to have gotten worse. she even laid an egg this morning, god bless her little heart. she is our best layer. how long should we wait before we cull her? should we give her a day or two time or are we just delaying the inevitable and allowing more suffering?