Injurious feather pecking is a major welfare problem in laying hen flocks causing pain, blood loss, and mortality; management-based prevention is more effective and welfare-positive than beak trimming.
Feather pecking represents a welfare emergency in affected flocks — targeted hens suffer open wounds, blood loss, and pain while the behaviour escalates through social contagion. However, the response to feather pecking matters enormously: beak trimming addresses the symptom while management improvement addresses the cause. High-welfare management including enrichment provision, appropriate stocking density, and nutritional adequacy prevents feather pecking from developing in the first place, avoiding the welfare costs of both the behaviour and its treatment.