Our chickens are getting close to laying age (about 5.5 months), so we're making sure our nesting boxes are in proper order. We realize they may not start laying until Spring, but want to make sure everything is okay in case they do start soon. Here is our current set-up: Question: the boxes have been in there for a week or so but I've never seen one of them actually get up there. It's kind of strange because they love to perch on anything they possibly can get up on. It makes me wonder if they can't easily get up into the boxes the way they're designed. How big should the boxes be? Should there be a small "shelf" in front of the boxes that makes it easier for them to fly up on them and enter? Any other tips? Thanks.