We have 2 Easter Egger hens that will be one year old in April. They both just started laying eggs for the first time in late January. They laid their blue eggs for a few weeks and then both just stopped. Our other hens are laying well, with spring almost here. WHY would newly laying hens just lay for a few weeks and then totally stop? We have never had EE's before and never had anything like this with the other hens.