One of my Americana chickens has stopped laying. It’s in the early winter months now and she is about a year old. Almost all the other chickens are molting including her and at first I thought it was just that she didn’t have the energy to molt and lay simultaneously. But it’s been several months now since we got an egg from her which is abnormal since the other chickens are still laying while molting and she is only a year old. What’s wrong with her? Anyone know?