I made a design for a new bigger coop. The store bought coops (2) and a few of the chickens were given to me by my uncle. I have added few more. I wanting a better system easier to keep up with and take the bottom. They have always been in these coops that didn’t have roosting rods. I’m proud of how my new shed size building turned out. It has nesting boxes are about 2 1/2 feet off the ground. I have 2 3 inch roosting rods that are higher than the nesting boxes and out in front of the box so poo will fall to the sand bottom. But the hens are still all gathering in the nesting boxes and filling them will poo and it’s so hard to stay on top of it. A couple of my new ones will roost on the rods but the others still all gather in the nesting boxes... why? What can I do to fix the problem?