Also another thing to consider is the nesting boxes. Some chickens prefer them to be elevated off of the ground so they feel more secure. Do they have a closed in place to nest for the night as a whole, or is it just the penned in area. They may feel insecure at night being in an open enclosure which can affect their laying as a whole. You may want to make sure that their nesting box is not only elevated, but that there is a makeshift area inside of your pen that they can feel enclosed and secure in at night, of course depending on how big your pen is. Are all of the sides open? If so they really just may feel insecure at night. Heat, too much corn/scratch, nesting box location, and their security at night can all be factors that add to this problem. Hope some of this helps. I know it sounds like it's a lot, but unfortunately sometimes they are just picky. Lol.
Thanks for the help everyone
