Good house design

• ship lap timber
• simple
• great ventilation – long narrow strips of mesh protected as well as through the corrugations of the roof for bigger houses
• high ventilation – not around the heads of the birds

Bad house design

• plastic, tin,
• felt roofing – which attracts and promotes red mite infestations
• slats in the floor as roosting bars – very unnatural, and causes breast bone issues
• no perches – chickens want to roost from only a few days and weeks old.