Feather pecking and cannibalism in laying hens is a multifactorial welfare problem requiring systemic management changes rather than symptom-focused interventions.
Feather pecking represents a systems-level welfare failure where the management conditions of intensive laying hen production create a behavioral cascade of harm. Hens redirect oral foraging behavior toward conspecifics when appropriate substrates are unavailable, when density is excessive, or when nutritional deficits create specific cravings. The symptom-management approach — beak trimming and darkness — reduces visible injury without addressing the underlying behavioral drivers. Systemic solutions require adequate foraging substrate, appropriate density, litter quality management, and genetic selection for lower reactivity. These interventions improve welfare more fundamentally by reducing the motivation to peck rather than reducing the capacity to cause damage.