Our EE is 10 months old and stopped laying in late November and started back up mid January, which I understand is because of the lack of daylight. Once she started back up in January, she was laying several a week, but as of last week, she has stopped laying again. These are my first chickens, so I am new to all of this. I have checked her for mites/lice, but I don't see anything. I did switch brands of layer feeds about a month ago. Does this happen sometimes? Is it normal? Just curious if anyone else has experienced this.