I do also think you need more ventilation. An obvious sign is to wipe your hand on the walls or roof inside first thing in the morning, especially on a cold morning. If it's damp or wet, or even worse, dripping, then you don't have enough ventilation. The moisture is from your birds breathing and condensing on the surfaces. It's a sure way to end up with frostbite on toes and combs. They can put out a LOT of moisture breathing all night.
I would use the light to get them to come in, if they don't use the roosts then manually put them up each night until they start to. If they still are reluctant to roost, then redoing the roost layout may help. I really can't see them well, so just throwing that out there too.
I would use the light to get them to come in, if they don't use the roosts then manually put them up each night until they start to. If they still are reluctant to roost, then redoing the roost layout may help. I really can't see them well, so just throwing that out there too.