We received 4 white ambers that are 16 weeks old. One of them keeps her eys closed just about all the time. I'm wondering if she is blind. I don't see any other signs of problems. She is eating and drinking and moving around the run with the other girls only bumping in to things. She even finds her way to the roost at night. She occasionally opens her eyes when eating or when bumping into something but she never keeps them open for more than a few seconds. When i look at her eyes they look the same as the other girls. Is she sick or blind? If sick what is wrong with her and how do i help her? I have tried searching google but have had no luck. Any suggestions appreciated.