Dustbathing is a highly motivated behaviour in laying hens essential for feather maintenance and welfare, requiring appropriate substrate provision in all housing systems.
Hens prevented from dustbathing experience frustration and perform incomplete vacuum dustbathing, which fails to satisfy the behavioural need. Chronic deprivation of this fundamental behaviour is a persistent welfare deficit in conventional cage systems. Provision of adequate dustbathing substrate in enriched and barn systems dramatically improves welfare by enabling normal behaviour. Free-range and organic systems provide outdoor access with natural substrate, but welfare benefits depend on hens actually using outdoor areas.