One of my hens was in the nest box all day today and wouldn't get out. When I went to lock them in the coop, she was lying flat on her stomach and wouldn't move - I thought she was sick or dead until I picked her up. She was sitting on all the eggs that were laid today, which I removed. She had a glazed over look to her eyes and was kind of unresponsive. Then she came to and ate and drank some water. When we are at work all day this week, I'm not going to be that aware of how she's behaving. What should I do?