I have 5 chickens (all about a year old). One of them is an "Easter-Egger". This very cold winter she stopped laying and all the others produced plenty of eggs. I am told it is normal for her breed to stop in winter. She started laying again on the first day of Spring. However, for the last couple of months she has been lethargic, sleepy all day and often closes one eye. She eats fine and she is laying. Also this condition has lingered. I am wondering if it is fatigue from the winter or she has some sickness that she has been coping with for a long time. She doesn't sneeze and doesn't have a runny nose. Just sleepy and slower than the others.