We have a flock of 10 hens all between 18 and 20 weeks old. We have one Barred Rock, "Red", that is our absolute favorite. She has always been loving, friendly, attention seeking, and more voistrous than our other hens. That being said, she has always been her own chicken and not necessarily following the flock. Over the last week we noticed that when we come around she squacks much louder and longer than normal. Then when we go to leave she starts up again and doesnt stop for a long time. Even when we are out of the coop she carries on. We also noticed that her eyes are cloudy and she pecks at her food very hard and occaionally misses like she cant find it. She has also been shaking while we hold her. The other girls have started to roost at night but Red still sleeps on the gound in the corner. When we put her on the roost to show her, she seems afraid to get down. Lastly, tonight we were letting the flock free range and at dusk all the hens headed in but her. She couldnt seem to find the coop. She headed away from it and finally settled in the woods until we picked her up. We are very concerned for her as she seems to be getting further from normal. And we fear for the health of the other hens. Has anyone had any experience with this kind of behavior?