we have 4 hens, all about 15 weeks old, 1 sussex and 3 bantams. AT night they all like to snuggle up together on a shelf about a foot off the floor. Very often the bantams will be under the wings of the sussex as if they were her chicks which is very cute! We have built nest boxes up higher with a closed ladder to reach them. None of the hens go up to the nest boxes despite us trying to entice them up with a food trail. When they start laying, will they climb up or are we just wishful thinking? ARe we likely to find them laying their eggs where they sleep? They do have a roost about the same height as the shelf and while they are happy sitting on that during the day, at night their preference is the shelf all snuggled up together.