I tried search but couldn't an answer. None of my hens have laid an egg for months. I'm clueless as to why. During the winter we turn the lights on in thee morning for them. I live in the u.p. of MI and our winters are pretty dreary, not much sunshine. In spring when the sun is nice and bright we don't do that. They quit laying. I don't know if it's a coincidence or what. I also went from a 20% protein to 16% feed. I thought they might be getting too much protein. I supplement vitamins in their water every 3rd or 4th water refill. My flock is a mix of young and old and different breeds. Any ideas?