It might help if you would post a photo of the nest boxes and your roosts. Maybe the roost poles are too narrow for them or too close to a wall.
I wouldn't build a box so they could cram into it instead of the nest box. It would be furthering bad habits.I know you said you could clean the box BUT, do you really want poo all over their eggs when they start laying.
I wouldn't build a box so they could cram into it instead of the nest box. It would be furthering bad habits.I know you said you could clean the box BUT, do you really want poo all over their eggs when they start laying.