My girls are 18 weeks, I got them back in July. They roam our acre yard during the day, and we put them up in the coop at night. They have had free choice water, feed, and grit since they were moved into the coop. On Monday I switched them to layer feed, gave them access to crushed oyster shell, and put ceramic eggs in the nest boxes. I know that winter affects egglaying and that they are of laying age, but I was wondering if the winter would affect them laying their FIRST eggs. I can't wait to get my first eggs!!