Yesterday she wouldn't eat, had a poopy butt and was very lethargic. I never could get to her to check and see if she was egg bound. When I let them out of the cage to roam she hid in the thorn bushes. When I checked on her last night she had gone into the coop and was standing beside the roost. This morning I noticed she had not come outside and found her. I'm very sad this morning but also worried about my other hens. What if she was sick and the sickness spreads? How can I find out or try and prevent this from happening to the other hens? This is the first hen I have lost in 3 years of raising chickens. Never have had one sick either.